/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 04:49:11,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 04:49:11,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 04:49:11,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 04:49:11,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 04:49:11,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 04:49:11,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 04:49:11,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 04:49:11,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 04:49:11,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 04:49:11,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 04:49:11,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 04:49:11,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 04:49:11,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 04:49:11,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 04:49:11,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 04:49:11,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 04:49:11,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 04:49:11,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 04:49:11,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 04:49:11,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 04:49:11,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 04:49:11,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 04:49:11,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 04:49:11,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 04:49:11,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 04:49:11,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 04:49:11,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 04:49:11,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 04:49:11,259 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 04:49:11,259 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 04:49:11,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 04:49:11,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 04:49:11,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 04:49:11,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 04:49:11,558 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 04:49:11,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-04-06 04:49:11,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e955d11f0/91ecaa7605bb4a31a856512861c827a8/FLAG0c48a93db [2022-04-06 04:49:12,052 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 04:49:12,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-04-06 04:49:12,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e955d11f0/91ecaa7605bb4a31a856512861c827a8/FLAG0c48a93db [2022-04-06 04:49:12,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e955d11f0/91ecaa7605bb4a31a856512861c827a8 [2022-04-06 04:49:12,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 04:49:12,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 04:49:12,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 04:49:12,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 04:49:12,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 04:49:12,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19622eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12, skipping insertion in model container [2022-04-06 04:49:12,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 04:49:12,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 04:49:12,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2022-04-06 04:49:12,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 04:49:12,267 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 04:49:12,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2022-04-06 04:49:12,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 04:49:12,294 INFO L208 MainTranslator]: Completed translation [2022-04-06 04:49:12,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12 WrapperNode [2022-04-06 04:49:12,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 04:49:12,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 04:49:12,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 04:49:12,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 04:49:12,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 04:49:12,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 04:49:12,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 04:49:12,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 04:49:12,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 04:49:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:12,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 04:49:12,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 04:49:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 04:49:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 04:49:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 04:49:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 04:49:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 04:49:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 04:49:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 04:49:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 04:49:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 04:49:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 04:49:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 04:49:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 04:49:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 04:49:12,449 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 04:49:12,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 04:49:12,619 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 04:49:12,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 04:49:12,628 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-06 04:49:12,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:49:12 BoogieIcfgContainer [2022-04-06 04:49:12,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 04:49:12,630 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 04:49:12,630 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 04:49:12,632 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 04:49:12,644 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:49:12" (1/1) ... [2022-04-06 04:49:12,646 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 04:49:12,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 04:49:12 BasicIcfg [2022-04-06 04:49:12,659 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 04:49:12,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 04:49:12,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 04:49:12,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 04:49:12,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 04:49:12" (1/4) ... [2022-04-06 04:49:12,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce7ae95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:49:12, skipping insertion in model container [2022-04-06 04:49:12,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:49:12" (2/4) ... [2022-04-06 04:49:12,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce7ae95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:49:12, skipping insertion in model container [2022-04-06 04:49:12,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:49:12" (3/4) ... [2022-04-06 04:49:12,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce7ae95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 04:49:12, skipping insertion in model container [2022-04-06 04:49:12,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 04:49:12" (4/4) ... [2022-04-06 04:49:12,665 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.iJordan [2022-04-06 04:49:12,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 04:49:12,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 04:49:12,724 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 04:49:12,729 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 04:49:12,730 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 04:49:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 04:49:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-06 04:49:12,763 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:12,763 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:12,764 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash -315946225, now seen corresponding path program 1 times [2022-04-06 04:49:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515030598] [2022-04-06 04:49:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:12,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:49:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:13,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515030598] [2022-04-06 04:49:13,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515030598] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:49:13,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:49:13,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 04:49:13,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326825893] [2022-04-06 04:49:13,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:49:13,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 04:49:13,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 04:49:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 04:49:13,051 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 04:49:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:13,095 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-04-06 04:49:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 04:49:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-06 04:49:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:13,105 INFO L225 Difference]: With dead ends: 28 [2022-04-06 04:49:13,105 INFO L226 Difference]: Without dead ends: 23 [2022-04-06 04:49:13,107 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 04:49:13,112 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:13,116 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 04:49:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-06 04:49:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-06 04:49:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 04:49:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-04-06 04:49:13,150 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2022-04-06 04:49:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:13,150 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-04-06 04:49:13,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 04:49:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-04-06 04:49:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-06 04:49:13,152 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:13,152 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:13,152 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 04:49:13,153 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash -756014827, now seen corresponding path program 1 times [2022-04-06 04:49:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:13,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772100451] [2022-04-06 04:49:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:49:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772100451] [2022-04-06 04:49:13,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772100451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:49:13,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:49:13,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 04:49:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133162986] [2022-04-06 04:49:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:49:13,294 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 04:49:13,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 04:49:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 04:49:13,295 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 04:49:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:13,441 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-04-06 04:49:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 04:49:13,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-06 04:49:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:13,444 INFO L225 Difference]: With dead ends: 30 [2022-04-06 04:49:13,444 INFO L226 Difference]: Without dead ends: 30 [2022-04-06 04:49:13,446 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 04:49:13,448 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:13,448 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 04:49:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-06 04:49:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-04-06 04:49:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 04:49:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-04-06 04:49:13,461 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2022-04-06 04:49:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:13,461 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-04-06 04:49:13,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 04:49:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-04-06 04:49:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-06 04:49:13,462 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:13,462 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:13,462 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 04:49:13,463 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:13,463 INFO L85 PathProgramCache]: Analyzing trace with hash -323876183, now seen corresponding path program 1 times [2022-04-06 04:49:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:13,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994436652] [2022-04-06 04:49:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 04:49:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:49:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:13,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994436652] [2022-04-06 04:49:13,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994436652] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 04:49:13,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 04:49:13,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 04:49:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754659044] [2022-04-06 04:49:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 04:49:13,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 04:49:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 04:49:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 04:49:13,581 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 04:49:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:13,710 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-04-06 04:49:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 04:49:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-04-06 04:49:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:13,713 INFO L225 Difference]: With dead ends: 40 [2022-04-06 04:49:13,713 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 04:49:13,714 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-06 04:49:13,715 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:13,715 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 04:49:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 04:49:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-04-06 04:49:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 04:49:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-04-06 04:49:13,723 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2022-04-06 04:49:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:13,723 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-04-06 04:49:13,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 04:49:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-06 04:49:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 04:49:13,725 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:13,725 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:13,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 04:49:13,725 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1972665292, now seen corresponding path program 1 times [2022-04-06 04:49:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:13,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511798324] [2022-04-06 04:49:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 04:49:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:49:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511798324] [2022-04-06 04:49:13,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511798324] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529303127] [2022-04-06 04:49:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:13,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:13,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:13,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 04:49:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:13,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 04:49:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:49:14,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 04:49:14,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529303127] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:14,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:14,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-04-06 04:49:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770206758] [2022-04-06 04:49:14,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:14,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 04:49:14,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 04:49:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-04-06 04:49:14,166 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 04:49:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:14,449 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-04-06 04:49:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 04:49:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2022-04-06 04:49:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:14,451 INFO L225 Difference]: With dead ends: 55 [2022-04-06 04:49:14,451 INFO L226 Difference]: Without dead ends: 50 [2022-04-06 04:49:14,452 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-04-06 04:49:14,460 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:14,463 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 63 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 04:49:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-06 04:49:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-04-06 04:49:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 04:49:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-04-06 04:49:14,470 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 28 [2022-04-06 04:49:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:14,471 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-04-06 04:49:14,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 04:49:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-04-06 04:49:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 04:49:14,472 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:14,472 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:14,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:14,689 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:14,690 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1540710339, now seen corresponding path program 2 times [2022-04-06 04:49:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:14,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434032373] [2022-04-06 04:49:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:14,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 04:49:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 04:49:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 04:49:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434032373] [2022-04-06 04:49:14,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434032373] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754023261] [2022-04-06 04:49:14,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:49:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:14,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:14,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:14,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 04:49:14,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:49:14,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:14,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 04:49:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 04:49:14,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 04:49:15,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754023261] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:15,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:15,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-04-06 04:49:15,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606103437] [2022-04-06 04:49:15,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:15,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 04:49:15,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:15,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 04:49:15,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-06 04:49:15,090 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 04:49:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:15,407 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-04-06 04:49:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 04:49:15,407 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 38 [2022-04-06 04:49:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:15,409 INFO L225 Difference]: With dead ends: 73 [2022-04-06 04:49:15,409 INFO L226 Difference]: Without dead ends: 64 [2022-04-06 04:49:15,410 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-04-06 04:49:15,410 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:15,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 55 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-06 04:49:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-04-06 04:49:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 04:49:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-04-06 04:49:15,430 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 38 [2022-04-06 04:49:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:15,430 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-04-06 04:49:15,431 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 04:49:15,431 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-04-06 04:49:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 04:49:15,432 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:15,432 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:15,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-06 04:49:15,632 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:15,633 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:15,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1691992838, now seen corresponding path program 3 times [2022-04-06 04:49:15,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:15,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649008133] [2022-04-06 04:49:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:15,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 04:49:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 04:49:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 04:49:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 04:49:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:15,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649008133] [2022-04-06 04:49:15,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649008133] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:15,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910307558] [2022-04-06 04:49:15,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:49:15,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:15,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:15,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 04:49:15,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-06 04:49:15,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:15,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 04:49:15,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 04:49:16,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 04:49:16,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910307558] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:16,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:16,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 17 [2022-04-06 04:49:16,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490030898] [2022-04-06 04:49:16,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:16,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 04:49:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 04:49:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-04-06 04:49:16,148 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 04:49:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:16,585 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2022-04-06 04:49:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 04:49:16,585 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 48 [2022-04-06 04:49:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:16,586 INFO L225 Difference]: With dead ends: 91 [2022-04-06 04:49:16,586 INFO L226 Difference]: Without dead ends: 78 [2022-04-06 04:49:16,587 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 04:49:16,588 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 100 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:16,588 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 88 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-04-06 04:49:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2022-04-06 04:49:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 04:49:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-04-06 04:49:16,593 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 48 [2022-04-06 04:49:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:16,594 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-04-06 04:49:16,594 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 04:49:16,594 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-04-06 04:49:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 04:49:16,595 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:16,595 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:16,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:16,796 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:16,796 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash -445742223, now seen corresponding path program 4 times [2022-04-06 04:49:16,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:16,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087108369] [2022-04-06 04:49:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:16,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 04:49:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 04:49:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 04:49:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 04:49:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 04:49:16,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087108369] [2022-04-06 04:49:16,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087108369] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669455071] [2022-04-06 04:49:16,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:49:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:16,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:17,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 04:49:17,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:49:17,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 04:49:17,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 04:49:17,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 04:49:17,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669455071] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:17,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:17,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2022-04-06 04:49:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963471849] [2022-04-06 04:49:17,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:17,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 04:49:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 04:49:17,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-04-06 04:49:17,377 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 04:49:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:17,899 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2022-04-06 04:49:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-06 04:49:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 58 [2022-04-06 04:49:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:17,903 INFO L225 Difference]: With dead ends: 109 [2022-04-06 04:49:17,903 INFO L226 Difference]: Without dead ends: 92 [2022-04-06 04:49:17,904 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2022-04-06 04:49:17,905 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 131 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:17,905 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 71 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 04:49:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-04-06 04:49:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2022-04-06 04:49:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 04:49:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-04-06 04:49:17,914 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 58 [2022-04-06 04:49:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:17,914 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-04-06 04:49:17,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 04:49:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-04-06 04:49:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 04:49:17,916 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:17,916 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:17,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:18,116 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:18,117 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2012634328, now seen corresponding path program 5 times [2022-04-06 04:49:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:18,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118522145] [2022-04-06 04:49:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 04:49:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 04:49:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 04:49:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-06 04:49:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:49:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 04:49:18,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118522145] [2022-04-06 04:49:18,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118522145] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220681132] [2022-04-06 04:49:18,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:49:18,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:18,286 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:18,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 04:49:18,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-04-06 04:49:18,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:18,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 04:49:18,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 04:49:18,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 04:49:18,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220681132] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:18,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:18,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 23 [2022-04-06 04:49:18,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518693442] [2022-04-06 04:49:18,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:18,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 04:49:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 04:49:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-04-06 04:49:18,756 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 04:49:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:19,055 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2022-04-06 04:49:19,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 04:49:19,055 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 68 [2022-04-06 04:49:19,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:19,056 INFO L225 Difference]: With dead ends: 118 [2022-04-06 04:49:19,056 INFO L226 Difference]: Without dead ends: 97 [2022-04-06 04:49:19,057 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 04:49:19,057 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 119 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:19,058 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 56 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-06 04:49:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2022-04-06 04:49:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 04:49:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-04-06 04:49:19,063 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2022-04-06 04:49:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:19,063 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-04-06 04:49:19,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 04:49:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-04-06 04:49:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 04:49:19,065 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:19,065 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:19,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:19,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:19,280 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 272693387, now seen corresponding path program 6 times [2022-04-06 04:49:19,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:19,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835656751] [2022-04-06 04:49:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 04:49:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 04:49:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 04:49:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 04:49:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 04:49:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 40 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 04:49:19,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835656751] [2022-04-06 04:49:19,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835656751] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090808952] [2022-04-06 04:49:19,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:49:19,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:19,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:19,410 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:19,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 04:49:19,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 04:49:19,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:19,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 04:49:19,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 04:49:19,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 04:49:19,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090808952] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:19,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:19,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2022-04-06 04:49:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866629003] [2022-04-06 04:49:19,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:19,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 04:49:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 04:49:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-04-06 04:49:19,791 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 04:49:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:20,048 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-04-06 04:49:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 04:49:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 70 [2022-04-06 04:49:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:20,049 INFO L225 Difference]: With dead ends: 90 [2022-04-06 04:49:20,049 INFO L226 Difference]: Without dead ends: 90 [2022-04-06 04:49:20,050 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2022-04-06 04:49:20,050 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:20,051 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 59 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-04-06 04:49:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2022-04-06 04:49:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 67 states have internal predecessors, (70), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 04:49:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-04-06 04:49:20,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 70 [2022-04-06 04:49:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:20,060 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-04-06 04:49:20,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 04:49:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-04-06 04:49:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 04:49:20,062 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:20,062 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:20,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:20,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:20,288 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash 723143603, now seen corresponding path program 7 times [2022-04-06 04:49:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:20,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676538209] [2022-04-06 04:49:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 04:49:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 04:49:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 04:49:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 04:49:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 04:49:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-06 04:49:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:49:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 94 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-06 04:49:20,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676538209] [2022-04-06 04:49:20,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676538209] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:20,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008003516] [2022-04-06 04:49:20,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:49:20,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:20,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:20,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:20,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 04:49:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-06 04:49:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-04-06 04:49:20,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 110 proven. 42 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-04-06 04:49:21,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008003516] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:21,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:21,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 27 [2022-04-06 04:49:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910787310] [2022-04-06 04:49:21,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:21,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-06 04:49:21,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-06 04:49:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-04-06 04:49:21,123 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-06 04:49:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:21,483 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2022-04-06 04:49:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 04:49:21,483 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 86 [2022-04-06 04:49:21,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:21,484 INFO L225 Difference]: With dead ends: 140 [2022-04-06 04:49:21,484 INFO L226 Difference]: Without dead ends: 115 [2022-04-06 04:49:21,485 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1263, Unknown=0, NotChecked=0, Total=1640 [2022-04-06 04:49:21,486 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 148 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:21,486 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 48 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-04-06 04:49:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-04-06 04:49:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 69 states have internal predecessors, (72), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 04:49:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-04-06 04:49:21,492 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 86 [2022-04-06 04:49:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:21,492 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-04-06 04:49:21,492 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-06 04:49:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-04-06 04:49:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-06 04:49:21,493 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:21,494 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:21,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:21,711 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:21,712 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:21,713 INFO L85 PathProgramCache]: Analyzing trace with hash -823513514, now seen corresponding path program 8 times [2022-04-06 04:49:21,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:21,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298313414] [2022-04-06 04:49:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:21,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 04:49:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 04:49:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 04:49:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 04:49:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 04:49:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:49:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:49:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-06 04:49:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298313414] [2022-04-06 04:49:21,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298313414] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784754683] [2022-04-06 04:49:21,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:49:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:21,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:21,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 04:49:21,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:49:21,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:21,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-06 04:49:21,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-06 04:49:22,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-06 04:49:22,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784754683] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:22,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:22,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 29 [2022-04-06 04:49:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104557408] [2022-04-06 04:49:22,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:22,436 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-06 04:49:22,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-06 04:49:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-04-06 04:49:22,437 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 04:49:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:23,189 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2022-04-06 04:49:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-06 04:49:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 88 [2022-04-06 04:49:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:23,191 INFO L225 Difference]: With dead ends: 159 [2022-04-06 04:49:23,191 INFO L226 Difference]: Without dead ends: 130 [2022-04-06 04:49:23,193 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=683, Invalid=3099, Unknown=0, NotChecked=0, Total=3782 [2022-04-06 04:49:23,193 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 260 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:23,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 70 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 04:49:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-04-06 04:49:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2022-04-06 04:49:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 04:49:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-04-06 04:49:23,204 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 88 [2022-04-06 04:49:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:23,204 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-04-06 04:49:23,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 04:49:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-04-06 04:49:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-06 04:49:23,208 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:23,209 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:23,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:23,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 04:49:23,436 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1909818931, now seen corresponding path program 9 times [2022-04-06 04:49:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:23,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144486582] [2022-04-06 04:49:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 04:49:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 04:49:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 04:49:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 04:49:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 04:49:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:49:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:49:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:49:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 04:49:23,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:23,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144486582] [2022-04-06 04:49:23,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144486582] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:23,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196163041] [2022-04-06 04:49:23,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:49:23,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:23,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:23,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:23,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 04:49:23,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-04-06 04:49:23,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:23,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-06 04:49:23,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 04:49:24,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 04:49:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196163041] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:24,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:24,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2022-04-06 04:49:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604779049] [2022-04-06 04:49:24,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:24,308 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-06 04:49:24,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-06 04:49:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2022-04-06 04:49:24,309 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-06 04:49:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:24,749 INFO L93 Difference]: Finished difference Result 168 states and 198 transitions. [2022-04-06 04:49:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 04:49:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 98 [2022-04-06 04:49:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:24,750 INFO L225 Difference]: With dead ends: 168 [2022-04-06 04:49:24,750 INFO L226 Difference]: Without dead ends: 135 [2022-04-06 04:49:24,751 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2022-04-06 04:49:24,751 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 168 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:24,752 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 62 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-04-06 04:49:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 99. [2022-04-06 04:49:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 79 states have internal predecessors, (82), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 04:49:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-04-06 04:49:24,756 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 98 [2022-04-06 04:49:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:24,757 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-04-06 04:49:24,757 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-06 04:49:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-04-06 04:49:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-04-06 04:49:24,758 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:24,758 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:24,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-06 04:49:24,959 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:24,960 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2091155440, now seen corresponding path program 10 times [2022-04-06 04:49:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430589652] [2022-04-06 04:49:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 04:49:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 04:49:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-06 04:49:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:49:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:49:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:49:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:49:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:49:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 88 proven. 146 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 04:49:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:25,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430589652] [2022-04-06 04:49:25,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430589652] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:25,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57218337] [2022-04-06 04:49:25,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:49:25,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:25,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:25,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 04:49:25,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:49:25,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:25,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 04:49:25,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 04:49:25,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 04:49:25,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57218337] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:25,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:25,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 19 [2022-04-06 04:49:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995804240] [2022-04-06 04:49:25,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:25,611 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 04:49:25,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 04:49:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-04-06 04:49:25,612 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 04:49:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:25,888 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2022-04-06 04:49:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 04:49:25,888 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 100 [2022-04-06 04:49:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:25,890 INFO L225 Difference]: With dead ends: 116 [2022-04-06 04:49:25,890 INFO L226 Difference]: Without dead ends: 116 [2022-04-06 04:49:25,890 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 04:49:25,891 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 84 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:25,891 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 67 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-04-06 04:49:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2022-04-06 04:49:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 04:49:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2022-04-06 04:49:25,895 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 100 [2022-04-06 04:49:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:25,895 INFO L478 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2022-04-06 04:49:25,896 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 04:49:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2022-04-06 04:49:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 04:49:25,897 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:25,897 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:25,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:26,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 04:49:26,111 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash -661362408, now seen corresponding path program 11 times [2022-04-06 04:49:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:26,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171063276] [2022-04-06 04:49:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 04:49:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 04:49:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-06 04:49:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:49:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:49:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:49:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:49:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:49:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:49:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:49:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 193 proven. 117 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-06 04:49:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:26,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171063276] [2022-04-06 04:49:26,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171063276] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:26,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952411400] [2022-04-06 04:49:26,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:49:26,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:26,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:26,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 04:49:26,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-04-06 04:49:26,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:26,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 04:49:26,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-06 04:49:26,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-06 04:49:27,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952411400] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:27,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:27,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 39 [2022-04-06 04:49:27,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133440064] [2022-04-06 04:49:27,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:27,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-06 04:49:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-06 04:49:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-04-06 04:49:27,169 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 04:49:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:27,940 INFO L93 Difference]: Finished difference Result 237 states and 283 transitions. [2022-04-06 04:49:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-06 04:49:27,941 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 116 [2022-04-06 04:49:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:27,942 INFO L225 Difference]: With dead ends: 237 [2022-04-06 04:49:27,942 INFO L226 Difference]: Without dead ends: 159 [2022-04-06 04:49:27,944 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1163, Invalid=3807, Unknown=0, NotChecked=0, Total=4970 [2022-04-06 04:49:27,944 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 244 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:27,945 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 84 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 04:49:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-04-06 04:49:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2022-04-06 04:49:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.043956043956044) internal successors, (95), 92 states have internal predecessors, (95), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 04:49:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2022-04-06 04:49:27,956 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 116 [2022-04-06 04:49:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:27,956 INFO L478 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2022-04-06 04:49:27,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 04:49:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2022-04-06 04:49:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-06 04:49:27,957 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:27,957 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:27,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:28,163 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-06 04:49:28,164 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash 893969182, now seen corresponding path program 12 times [2022-04-06 04:49:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:28,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445431598] [2022-04-06 04:49:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 04:49:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 04:49:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 04:49:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 04:49:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:49:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:49:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:49:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:49:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:49:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:49:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-06 04:49:28,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:28,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445431598] [2022-04-06 04:49:28,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445431598] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:28,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461364652] [2022-04-06 04:49:28,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:49:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:28,366 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:28,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 04:49:28,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-04-06 04:49:28,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:28,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-06 04:49:28,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-06 04:49:28,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-06 04:49:28,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461364652] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:28,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:28,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 21 [2022-04-06 04:49:28,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193681546] [2022-04-06 04:49:28,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:28,884 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 04:49:28,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:28,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 04:49:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-04-06 04:49:28,885 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 04:49:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:29,168 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2022-04-06 04:49:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 04:49:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 120 [2022-04-06 04:49:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:29,170 INFO L225 Difference]: With dead ends: 132 [2022-04-06 04:49:29,170 INFO L226 Difference]: Without dead ends: 132 [2022-04-06 04:49:29,171 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2022-04-06 04:49:29,171 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:29,171 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 54 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 04:49:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-06 04:49:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-04-06 04:49:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.04) internal successors, (104), 101 states have internal predecessors, (104), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-06 04:49:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2022-04-06 04:49:29,181 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 120 [2022-04-06 04:49:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:29,181 INFO L478 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2022-04-06 04:49:29,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 04:49:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2022-04-06 04:49:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-04-06 04:49:29,183 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:29,183 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:29,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-04-06 04:49:29,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-06 04:49:29,399 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash -124211130, now seen corresponding path program 13 times [2022-04-06 04:49:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:29,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703872942] [2022-04-06 04:49:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 04:49:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 04:49:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 04:49:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 04:49:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:49:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:49:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:49:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:49:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:49:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:49:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:49:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:49:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-06 04:49:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703872942] [2022-04-06 04:49:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703872942] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584178145] [2022-04-06 04:49:29,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:49:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:29,759 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:29,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 04:49:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:29,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 04:49:29,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-04-06 04:49:30,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-04-06 04:49:30,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584178145] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:30,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:30,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 42 [2022-04-06 04:49:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024877146] [2022-04-06 04:49:30,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:30,645 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-06 04:49:30,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-06 04:49:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2022-04-06 04:49:30,646 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-04-06 04:49:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:31,298 INFO L93 Difference]: Finished difference Result 222 states and 263 transitions. [2022-04-06 04:49:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-06 04:49:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 136 [2022-04-06 04:49:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:31,301 INFO L225 Difference]: With dead ends: 222 [2022-04-06 04:49:31,301 INFO L226 Difference]: Without dead ends: 177 [2022-04-06 04:49:31,302 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=967, Invalid=3323, Unknown=0, NotChecked=0, Total=4290 [2022-04-06 04:49:31,303 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 226 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:31,303 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 88 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 04:49:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-06 04:49:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 129. [2022-04-06 04:49:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 103 states have internal predecessors, (106), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-06 04:49:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2022-04-06 04:49:31,313 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 136 [2022-04-06 04:49:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:31,313 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2022-04-06 04:49:31,314 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-04-06 04:49:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2022-04-06 04:49:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-04-06 04:49:31,315 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:31,315 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:31,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:31,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-06 04:49:31,516 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1132461015, now seen corresponding path program 14 times [2022-04-06 04:49:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:31,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800908967] [2022-04-06 04:49:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 04:49:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 04:49:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 04:49:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 04:49:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:49:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:49:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:49:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:49:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:49:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:49:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:49:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:49:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-06 04:49:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:31,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800908967] [2022-04-06 04:49:31,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800908967] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:31,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968310770] [2022-04-06 04:49:31,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:49:31,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:31,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:31,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:31,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 04:49:31,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:49:31,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:31,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-06 04:49:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-06 04:49:32,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-06 04:49:32,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968310770] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:32,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:32,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17, 17] total 44 [2022-04-06 04:49:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682224692] [2022-04-06 04:49:32,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:32,670 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-04-06 04:49:32,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-04-06 04:49:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-04-06 04:49:32,671 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 04:49:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:34,147 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2022-04-06 04:49:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-06 04:49:34,148 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 138 [2022-04-06 04:49:34,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:34,149 INFO L225 Difference]: With dead ends: 241 [2022-04-06 04:49:34,150 INFO L226 Difference]: Without dead ends: 192 [2022-04-06 04:49:34,152 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1623, Invalid=7689, Unknown=0, NotChecked=0, Total=9312 [2022-04-06 04:49:34,153 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 309 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:34,153 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 140 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 04:49:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-04-06 04:49:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2022-04-06 04:49:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 111 states have internal predecessors, (114), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 04:49:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2022-04-06 04:49:34,158 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 138 [2022-04-06 04:49:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:34,158 INFO L478 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2022-04-06 04:49:34,158 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 04:49:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2022-04-06 04:49:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-04-06 04:49:34,162 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:34,163 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:34,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:34,387 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:34,387 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1762808352, now seen corresponding path program 15 times [2022-04-06 04:49:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626335877] [2022-04-06 04:49:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:34,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 04:49:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-06 04:49:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:49:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:49:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:49:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:49:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:49:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:49:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:49:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:49:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:49:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:49:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:49:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-06 04:49:34,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:34,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626335877] [2022-04-06 04:49:34,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626335877] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:34,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404997175] [2022-04-06 04:49:34,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:49:34,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:34,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:34,779 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:34,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 04:49:34,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-04-06 04:49:34,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:34,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 04:49:34,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-06 04:49:35,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-06 04:49:35,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404997175] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:35,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:35,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18, 18] total 47 [2022-04-06 04:49:35,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112292925] [2022-04-06 04:49:35,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:35,674 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-06 04:49:35,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:35,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-06 04:49:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2022-04-06 04:49:35,675 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-06 04:49:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:37,026 INFO L93 Difference]: Finished difference Result 259 states and 306 transitions. [2022-04-06 04:49:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-06 04:49:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 148 [2022-04-06 04:49:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:37,028 INFO L225 Difference]: With dead ends: 259 [2022-04-06 04:49:37,028 INFO L226 Difference]: Without dead ends: 206 [2022-04-06 04:49:37,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1859, Invalid=8853, Unknown=0, NotChecked=0, Total=10712 [2022-04-06 04:49:37,032 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 380 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:37,032 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 113 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 04:49:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-04-06 04:49:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2022-04-06 04:49:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 119 states have internal predecessors, (122), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-06 04:49:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2022-04-06 04:49:37,040 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 148 [2022-04-06 04:49:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:37,041 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2022-04-06 04:49:37,041 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-06 04:49:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2022-04-06 04:49:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-04-06 04:49:37,042 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:37,042 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:37,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:37,267 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-06 04:49:37,267 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash -263642921, now seen corresponding path program 16 times [2022-04-06 04:49:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:37,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789419838] [2022-04-06 04:49:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 04:49:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 04:49:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 04:49:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-06 04:49:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:49:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:49:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:49:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:49:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:49:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:49:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:49:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:49:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:49:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:49:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-06 04:49:37,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:37,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789419838] [2022-04-06 04:49:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789419838] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:37,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907646691] [2022-04-06 04:49:37,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:49:37,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:37,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:37,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:37,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 04:49:37,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:49:37,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:37,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-06 04:49:37,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-06 04:49:38,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-06 04:49:38,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907646691] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:38,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:38,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19, 19] total 50 [2022-04-06 04:49:38,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874171273] [2022-04-06 04:49:38,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:38,606 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-06 04:49:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:38,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-06 04:49:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2052, Unknown=0, NotChecked=0, Total=2450 [2022-04-06 04:49:38,608 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-06 04:49:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:40,126 INFO L93 Difference]: Finished difference Result 277 states and 327 transitions. [2022-04-06 04:49:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-06 04:49:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 158 [2022-04-06 04:49:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:40,128 INFO L225 Difference]: With dead ends: 277 [2022-04-06 04:49:40,128 INFO L226 Difference]: Without dead ends: 220 [2022-04-06 04:49:40,130 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2111, Invalid=10099, Unknown=0, NotChecked=0, Total=12210 [2022-04-06 04:49:40,131 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 387 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:40,131 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 116 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 04:49:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-04-06 04:49:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 159. [2022-04-06 04:49:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 127 states have internal predecessors, (130), 18 states have call successors, (18), 15 states have call predecessors, (18), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 04:49:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2022-04-06 04:49:40,137 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 158 [2022-04-06 04:49:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:40,137 INFO L478 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2022-04-06 04:49:40,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-06 04:49:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2022-04-06 04:49:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-04-06 04:49:40,138 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:40,139 INFO L499 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:40,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:40,356 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:40,357 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:40,357 INFO L85 PathProgramCache]: Analyzing trace with hash -243938034, now seen corresponding path program 17 times [2022-04-06 04:49:40,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:40,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046390497] [2022-04-06 04:49:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 04:49:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 04:49:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 04:49:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:49:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:49:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:49:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:49:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:49:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:49:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:49:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:49:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:49:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:49:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:49:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:49:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 438 proven. 282 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-06 04:49:40,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:40,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046390497] [2022-04-06 04:49:40,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046390497] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:40,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529075753] [2022-04-06 04:49:40,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:49:40,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:40,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:40,844 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:40,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-06 04:49:40,945 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-04-06 04:49:40,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:40,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-06 04:49:40,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-06 04:49:41,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-06 04:49:42,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529075753] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:42,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:42,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 53 [2022-04-06 04:49:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959462136] [2022-04-06 04:49:42,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:42,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-06 04:49:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-06 04:49:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2139, Unknown=0, NotChecked=0, Total=2756 [2022-04-06 04:49:42,003 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 04:49:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:42,886 INFO L93 Difference]: Finished difference Result 286 states and 339 transitions. [2022-04-06 04:49:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-06 04:49:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 168 [2022-04-06 04:49:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:42,889 INFO L225 Difference]: With dead ends: 286 [2022-04-06 04:49:42,889 INFO L226 Difference]: Without dead ends: 225 [2022-04-06 04:49:42,890 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1619, Invalid=5521, Unknown=0, NotChecked=0, Total=7140 [2022-04-06 04:49:42,890 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 270 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:42,891 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 96 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 04:49:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-04-06 04:49:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 161. [2022-04-06 04:49:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 128 states have (on average 1.03125) internal successors, (132), 129 states have internal predecessors, (132), 18 states have call successors, (18), 15 states have call predecessors, (18), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 04:49:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2022-04-06 04:49:42,896 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 168 [2022-04-06 04:49:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:42,896 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2022-04-06 04:49:42,896 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 04:49:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2022-04-06 04:49:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-04-06 04:49:42,897 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:42,897 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:42,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-04-06 04:49:43,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:43,112 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:43,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash -509815567, now seen corresponding path program 18 times [2022-04-06 04:49:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:43,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19892505] [2022-04-06 04:49:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 04:49:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 04:49:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 04:49:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:49:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:49:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:49:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:49:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:49:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:49:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:49:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:49:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:49:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:49:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:49:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:49:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 270 proven. 482 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-06 04:49:43,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:43,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19892505] [2022-04-06 04:49:43,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19892505] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:43,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710275004] [2022-04-06 04:49:43,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:49:43,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:43,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:43,405 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:43,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-06 04:49:43,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-04-06 04:49:43,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:43,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 35 conjunts are in the unsatisfiable core [2022-04-06 04:49:43,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-06 04:49:43,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-06 04:49:44,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710275004] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:44,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:44,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 26 [2022-04-06 04:49:44,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374812690] [2022-04-06 04:49:44,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:44,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-06 04:49:44,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-06 04:49:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2022-04-06 04:49:44,127 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 04:49:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:44,602 INFO L93 Difference]: Finished difference Result 178 states and 186 transitions. [2022-04-06 04:49:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 04:49:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 170 [2022-04-06 04:49:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:44,604 INFO L225 Difference]: With dead ends: 178 [2022-04-06 04:49:44,604 INFO L226 Difference]: Without dead ends: 178 [2022-04-06 04:49:44,604 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=610, Invalid=1646, Unknown=0, NotChecked=0, Total=2256 [2022-04-06 04:49:44,605 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 112 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:44,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 69 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 04:49:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-04-06 04:49:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2022-04-06 04:49:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 138 states have internal predecessors, (141), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-06 04:49:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2022-04-06 04:49:44,610 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 170 [2022-04-06 04:49:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:44,611 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2022-04-06 04:49:44,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 04:49:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2022-04-06 04:49:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-04-06 04:49:44,612 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:44,612 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:44,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:44,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:44,813 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash 82615321, now seen corresponding path program 19 times [2022-04-06 04:49:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:44,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997142673] [2022-04-06 04:49:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 04:49:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 04:49:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 04:49:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:49:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:49:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:49:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:49:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:49:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:49:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:49:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:49:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:49:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:49:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:49:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:49:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:49:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:49:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 564 proven. 320 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-06 04:49:45,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997142673] [2022-04-06 04:49:45,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997142673] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155017215] [2022-04-06 04:49:45,299 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:49:45,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:45,301 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:45,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-06 04:49:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:45,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-06 04:49:45,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 672 proven. 272 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-04-06 04:49:46,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 610 proven. 272 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-04-06 04:49:46,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155017215] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:46,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:46,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 57 [2022-04-06 04:49:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645299749] [2022-04-06 04:49:46,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:46,514 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-06 04:49:46,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-06 04:49:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=2484, Unknown=0, NotChecked=0, Total=3192 [2022-04-06 04:49:46,515 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2022-04-06 04:49:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:47,374 INFO L93 Difference]: Finished difference Result 308 states and 365 transitions. [2022-04-06 04:49:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-06 04:49:47,376 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) Word has length 186 [2022-04-06 04:49:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:47,377 INFO L225 Difference]: With dead ends: 308 [2022-04-06 04:49:47,377 INFO L226 Difference]: Without dead ends: 243 [2022-04-06 04:49:47,378 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1832, Invalid=6358, Unknown=0, NotChecked=0, Total=8190 [2022-04-06 04:49:47,378 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 376 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:47,379 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 83 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 04:49:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-04-06 04:49:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2022-04-06 04:49:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 140 states have internal predecessors, (143), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-06 04:49:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2022-04-06 04:49:47,385 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 186 [2022-04-06 04:49:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:47,385 INFO L478 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2022-04-06 04:49:47,385 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2022-04-06 04:49:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2022-04-06 04:49:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-04-06 04:49:47,386 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:47,387 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:47,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:47,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:47,613 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -535523012, now seen corresponding path program 20 times [2022-04-06 04:49:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:47,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808221218] [2022-04-06 04:49:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-06 04:49:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:49:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:49:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:49:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:49:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:49:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:49:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:49:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:49:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:49:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:49:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:49:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:49:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:49:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:49:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:49:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:49:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 564 proven. 354 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-06 04:49:48,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808221218] [2022-04-06 04:49:48,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808221218] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346384180] [2022-04-06 04:49:48,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:49:48,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:48,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:48,160 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:48,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-06 04:49:48,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:49:48,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:48,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-06 04:49:48,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-06 04:49:48,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-06 04:49:49,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346384180] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:49,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:49,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 22, 22] total 59 [2022-04-06 04:49:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5037759] [2022-04-06 04:49:49,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:49,236 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-04-06 04:49:49,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-04-06 04:49:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2865, Unknown=0, NotChecked=0, Total=3422 [2022-04-06 04:49:49,237 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-06 04:49:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:50,926 INFO L93 Difference]: Finished difference Result 327 states and 387 transitions. [2022-04-06 04:49:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-04-06 04:49:50,926 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 188 [2022-04-06 04:49:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:50,928 INFO L225 Difference]: With dead ends: 327 [2022-04-06 04:49:50,928 INFO L226 Difference]: Without dead ends: 258 [2022-04-06 04:49:50,929 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5659 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2963, Invalid=14329, Unknown=0, NotChecked=0, Total=17292 [2022-04-06 04:49:50,930 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 530 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:50,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 115 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 04:49:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-04-06 04:49:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2022-04-06 04:49:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 148 states have internal predecessors, (151), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-06 04:49:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2022-04-06 04:49:50,935 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 188 [2022-04-06 04:49:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:50,936 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2022-04-06 04:49:50,936 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-06 04:49:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2022-04-06 04:49:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-04-06 04:49:50,937 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:50,937 INFO L499 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:50,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:51,163 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-04-06 04:49:51,163 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1382971085, now seen corresponding path program 21 times [2022-04-06 04:49:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:51,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674029726] [2022-04-06 04:49:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 04:49:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 04:49:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-06 04:49:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:49:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:49:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:49:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:49:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:49:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:49:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:49:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:49:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:49:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:49:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:49:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:49:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:49:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:49:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:49:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-06 04:49:51,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:51,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674029726] [2022-04-06 04:49:51,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674029726] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:51,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455540229] [2022-04-06 04:49:51,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:49:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:51,740 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:51,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-06 04:49:51,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-04-06 04:49:51,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:51,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 40 conjunts are in the unsatisfiable core [2022-04-06 04:49:51,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-06 04:49:52,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-06 04:49:52,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455540229] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:52,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:52,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 23, 23] total 62 [2022-04-06 04:49:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863731825] [2022-04-06 04:49:52,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:52,903 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-04-06 04:49:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-04-06 04:49:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=3166, Unknown=0, NotChecked=0, Total=3782 [2022-04-06 04:49:52,904 INFO L87 Difference]: Start difference. First operand 185 states and 192 transitions. Second operand has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 04:49:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:54,730 INFO L93 Difference]: Finished difference Result 345 states and 408 transitions. [2022-04-06 04:49:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-04-06 04:49:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 198 [2022-04-06 04:49:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:54,734 INFO L225 Difference]: With dead ends: 345 [2022-04-06 04:49:54,734 INFO L226 Difference]: Without dead ends: 272 [2022-04-06 04:49:54,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6316 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3279, Invalid=15903, Unknown=0, NotChecked=0, Total=19182 [2022-04-06 04:49:54,738 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 521 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:54,738 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 123 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 04:49:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-04-06 04:49:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 195. [2022-04-06 04:49:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 156 states have internal predecessors, (159), 22 states have call successors, (22), 18 states have call predecessors, (22), 17 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 04:49:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2022-04-06 04:49:54,744 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 198 [2022-04-06 04:49:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:54,745 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 202 transitions. [2022-04-06 04:49:54,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 04:49:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 202 transitions. [2022-04-06 04:49:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-04-06 04:49:54,746 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:54,746 INFO L499 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:54,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:54,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-04-06 04:49:54,967 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1594525078, now seen corresponding path program 22 times [2022-04-06 04:49:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:54,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507845295] [2022-04-06 04:49:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 04:49:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 04:49:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:49:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:49:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:49:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:49:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:49:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:49:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:49:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:49:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:49:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:49:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:49:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:49:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:49:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:49:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:49:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:49:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:49:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-06 04:49:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:55,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507845295] [2022-04-06 04:49:55,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507845295] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:55,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685028654] [2022-04-06 04:49:55,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:49:55,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:55,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:55,615 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:55,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-06 04:49:55,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:49:55,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:55,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-06 04:49:55,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:49:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-06 04:49:56,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:49:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-06 04:49:56,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685028654] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:49:56,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:49:56,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 24, 24] total 65 [2022-04-06 04:49:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494597675] [2022-04-06 04:49:56,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:49:56,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-04-06 04:49:56,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:49:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-04-06 04:49:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2022-04-06 04:49:56,771 INFO L87 Difference]: Start difference. First operand 195 states and 202 transitions. Second operand has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-06 04:49:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:49:58,866 INFO L93 Difference]: Finished difference Result 363 states and 429 transitions. [2022-04-06 04:49:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-04-06 04:49:58,867 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 208 [2022-04-06 04:49:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:49:58,868 INFO L225 Difference]: With dead ends: 363 [2022-04-06 04:49:58,868 INFO L226 Difference]: Without dead ends: 286 [2022-04-06 04:49:58,870 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 455 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7009 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3611, Invalid=17559, Unknown=0, NotChecked=0, Total=21170 [2022-04-06 04:49:58,871 INFO L913 BasicCegarLoop]: 69 mSDtfsCounter, 532 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:49:58,871 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 156 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 04:49:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-04-06 04:49:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 205. [2022-04-06 04:49:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 164 states have internal predecessors, (167), 23 states have call successors, (23), 19 states have call predecessors, (23), 18 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 04:49:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 212 transitions. [2022-04-06 04:49:58,877 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 212 transitions. Word has length 208 [2022-04-06 04:49:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:49:58,877 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 212 transitions. [2022-04-06 04:49:58,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-06 04:49:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 212 transitions. [2022-04-06 04:49:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-04-06 04:49:58,879 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:49:58,879 INFO L499 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:49:58,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-06 04:49:59,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:59,108 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:49:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:49:59,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1419258655, now seen corresponding path program 23 times [2022-04-06 04:49:59,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:49:59,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364050724] [2022-04-06 04:49:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:49:59,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:49:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:49:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 04:49:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 04:49:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:49:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:49:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:49:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:49:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:49:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:49:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:49:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:49:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:49:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:49:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:49:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:49:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:49:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:49:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:49:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:49:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:49:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:49:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:49:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-06 04:49:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:49:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364050724] [2022-04-06 04:49:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364050724] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:49:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767517212] [2022-04-06 04:49:59,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:49:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:49:59,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:49:59,736 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:49:59,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-06 04:49:59,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-04-06 04:49:59,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:49:59,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-06 04:49:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-06 04:50:00,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-06 04:50:01,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767517212] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:01,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:01,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 68 [2022-04-06 04:50:01,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352076808] [2022-04-06 04:50:01,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:01,325 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-04-06 04:50:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-04-06 04:50:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2022-04-06 04:50:01,327 INFO L87 Difference]: Start difference. First operand 205 states and 212 transitions. Second operand has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-06 04:50:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:02,516 INFO L93 Difference]: Finished difference Result 372 states and 441 transitions. [2022-04-06 04:50:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-06 04:50:02,517 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 218 [2022-04-06 04:50:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:02,519 INFO L225 Difference]: With dead ends: 372 [2022-04-06 04:50:02,519 INFO L226 Difference]: Without dead ends: 291 [2022-04-06 04:50:02,520 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3195 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2699, Invalid=9291, Unknown=0, NotChecked=0, Total=11990 [2022-04-06 04:50:02,521 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 415 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:02,521 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 96 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 04:50:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-04-06 04:50:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 207. [2022-04-06 04:50:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0242424242424242) internal successors, (169), 166 states have internal predecessors, (169), 23 states have call successors, (23), 19 states have call predecessors, (23), 18 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 04:50:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 214 transitions. [2022-04-06 04:50:02,528 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 214 transitions. Word has length 218 [2022-04-06 04:50:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:02,529 INFO L478 AbstractCegarLoop]: Abstraction has 207 states and 214 transitions. [2022-04-06 04:50:02,529 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-06 04:50:02,529 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 214 transitions. [2022-04-06 04:50:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-04-06 04:50:02,531 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:02,531 INFO L499 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:02,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:02,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:02,751 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash -705004028, now seen corresponding path program 24 times [2022-04-06 04:50:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:02,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989824272] [2022-04-06 04:50:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:50:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:50:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:50:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:50:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:50:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:50:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:50:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:50:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:50:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:50:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:50:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:50:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:50:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:50:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:50:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:50:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:50:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:50:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:50:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:50:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-06 04:50:03,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:03,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989824272] [2022-04-06 04:50:03,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989824272] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:03,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871435151] [2022-04-06 04:50:03,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:50:03,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:03,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:03,171 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:03,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-06 04:50:03,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-04-06 04:50:03,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:03,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 45 conjunts are in the unsatisfiable core [2022-04-06 04:50:03,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-06 04:50:03,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-06 04:50:04,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871435151] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:04,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:04,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 31 [2022-04-06 04:50:04,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381208696] [2022-04-06 04:50:04,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:04,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-06 04:50:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:04,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-06 04:50:04,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2022-04-06 04:50:04,048 INFO L87 Difference]: Start difference. First operand 207 states and 214 transitions. Second operand has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 04:50:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:04,564 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2022-04-06 04:50:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-06 04:50:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 220 [2022-04-06 04:50:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:04,566 INFO L225 Difference]: With dead ends: 224 [2022-04-06 04:50:04,567 INFO L226 Difference]: Without dead ends: 224 [2022-04-06 04:50:04,567 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=940, Invalid=2366, Unknown=0, NotChecked=0, Total=3306 [2022-04-06 04:50:04,567 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 137 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:04,568 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 59 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 04:50:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-04-06 04:50:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-04-06 04:50:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 175 states have internal predecessors, (178), 25 states have call successors, (25), 20 states have call predecessors, (25), 19 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 04:50:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2022-04-06 04:50:04,573 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 220 [2022-04-06 04:50:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:04,574 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2022-04-06 04:50:04,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 04:50:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2022-04-06 04:50:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-04-06 04:50:04,575 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:04,575 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:04,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:04,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-06 04:50:04,799 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1082933460, now seen corresponding path program 25 times [2022-04-06 04:50:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:04,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044770801] [2022-04-06 04:50:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 04:50:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:50:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:50:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:50:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:50:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:50:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:50:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:50:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:50:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:50:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:50:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:50:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:50:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:50:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:50:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:50:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:50:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:50:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:50:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:50:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:50:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:50:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-06 04:50:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:05,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044770801] [2022-04-06 04:50:05,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044770801] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:05,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757611106] [2022-04-06 04:50:05,569 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:50:05,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:05,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:05,571 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:05,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-06 04:50:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 46 conjunts are in the unsatisfiable core [2022-04-06 04:50:05,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-04-06 04:50:06,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-04-06 04:50:07,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757611106] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:07,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:07,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 46, 46] total 72 [2022-04-06 04:50:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560802665] [2022-04-06 04:50:07,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:07,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-04-06 04:50:07,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-04-06 04:50:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=3979, Unknown=0, NotChecked=0, Total=5112 [2022-04-06 04:50:07,180 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-04-06 04:50:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:08,403 INFO L93 Difference]: Finished difference Result 394 states and 467 transitions. [2022-04-06 04:50:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-06 04:50:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) Word has length 236 [2022-04-06 04:50:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:08,406 INFO L225 Difference]: With dead ends: 394 [2022-04-06 04:50:08,406 INFO L226 Difference]: Without dead ends: 309 [2022-04-06 04:50:08,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3591 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2972, Invalid=10368, Unknown=0, NotChecked=0, Total=13340 [2022-04-06 04:50:08,408 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 444 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:08,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 118 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 04:50:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-04-06 04:50:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 221. [2022-04-06 04:50:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 176 states have (on average 1.0227272727272727) internal successors, (180), 177 states have internal predecessors, (180), 25 states have call successors, (25), 20 states have call predecessors, (25), 19 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 04:50:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2022-04-06 04:50:08,415 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 236 [2022-04-06 04:50:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:08,415 INFO L478 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2022-04-06 04:50:08,415 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-04-06 04:50:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2022-04-06 04:50:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-04-06 04:50:08,417 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:08,417 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:08,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:08,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-04-06 04:50:08,643 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1034320497, now seen corresponding path program 26 times [2022-04-06 04:50:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:08,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938268712] [2022-04-06 04:50:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:08,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 04:50:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-06 04:50:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:50:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:50:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:50:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:50:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:50:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:50:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:50:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:50:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:50:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:50:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:50:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:50:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:50:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:50:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:50:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:50:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:50:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:50:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:50:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:50:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-06 04:50:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:09,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938268712] [2022-04-06 04:50:09,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938268712] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597101610] [2022-04-06 04:50:09,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:50:09,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:09,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:09,407 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:09,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-06 04:50:09,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:50:09,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:09,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 48 conjunts are in the unsatisfiable core [2022-04-06 04:50:09,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-06 04:50:10,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-06 04:50:10,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597101610] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:10,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:10,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 27, 27] total 74 [2022-04-06 04:50:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799479616] [2022-04-06 04:50:10,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:10,749 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-04-06 04:50:10,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-04-06 04:50:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=882, Invalid=4520, Unknown=0, NotChecked=0, Total=5402 [2022-04-06 04:50:10,750 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-06 04:50:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:13,401 INFO L93 Difference]: Finished difference Result 413 states and 489 transitions. [2022-04-06 04:50:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-04-06 04:50:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 238 [2022-04-06 04:50:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:13,402 INFO L225 Difference]: With dead ends: 413 [2022-04-06 04:50:13,402 INFO L226 Difference]: Without dead ends: 324 [2022-04-06 04:50:13,406 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 521 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9304 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4703, Invalid=23019, Unknown=0, NotChecked=0, Total=27722 [2022-04-06 04:50:13,408 INFO L913 BasicCegarLoop]: 78 mSDtfsCounter, 599 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:13,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 175 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 04:50:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-04-06 04:50:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 231. [2022-04-06 04:50:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 185 states have internal predecessors, (188), 26 states have call successors, (26), 21 states have call predecessors, (26), 20 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 04:50:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 239 transitions. [2022-04-06 04:50:13,420 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 239 transitions. Word has length 238 [2022-04-06 04:50:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:13,420 INFO L478 AbstractCegarLoop]: Abstraction has 231 states and 239 transitions. [2022-04-06 04:50:13,420 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-06 04:50:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 239 transitions. [2022-04-06 04:50:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-04-06 04:50:13,422 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:13,422 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:13,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:13,635 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-04-06 04:50:13,635 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1502889018, now seen corresponding path program 27 times [2022-04-06 04:50:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151768560] [2022-04-06 04:50:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 04:50:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:50:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:50:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:50:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:50:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:50:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:50:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:50:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:50:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:50:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:50:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:50:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:50:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:50:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:50:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:50:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:50:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:50:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:50:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:50:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:50:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:50:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:50:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-06 04:50:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:14,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151768560] [2022-04-06 04:50:14,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151768560] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:14,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46574817] [2022-04-06 04:50:14,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:50:14,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:14,432 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:14,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-06 04:50:14,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-04-06 04:50:14,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:14,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 50 conjunts are in the unsatisfiable core [2022-04-06 04:50:14,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-06 04:50:15,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-06 04:50:15,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46574817] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:15,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:15,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 28, 28] total 77 [2022-04-06 04:50:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067238413] [2022-04-06 04:50:15,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:15,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-04-06 04:50:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-04-06 04:50:15,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=4896, Unknown=0, NotChecked=0, Total=5852 [2022-04-06 04:50:15,942 INFO L87 Difference]: Start difference. First operand 231 states and 239 transitions. Second operand has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-06 04:50:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:18,488 INFO L93 Difference]: Finished difference Result 431 states and 510 transitions. [2022-04-06 04:50:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-06 04:50:18,489 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 248 [2022-04-06 04:50:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:18,492 INFO L225 Difference]: With dead ends: 431 [2022-04-06 04:50:18,492 INFO L226 Difference]: Without dead ends: 338 [2022-04-06 04:50:18,494 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 543 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10141 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5099, Invalid=25003, Unknown=0, NotChecked=0, Total=30102 [2022-04-06 04:50:18,497 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 694 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:18,497 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 128 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 04:50:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-04-06 04:50:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 241. [2022-04-06 04:50:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 193 states have internal predecessors, (196), 27 states have call successors, (27), 22 states have call predecessors, (27), 21 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-06 04:50:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 249 transitions. [2022-04-06 04:50:18,504 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 249 transitions. Word has length 248 [2022-04-06 04:50:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:18,504 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 249 transitions. [2022-04-06 04:50:18,505 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-06 04:50:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 249 transitions. [2022-04-06 04:50:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-04-06 04:50:18,507 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:18,507 INFO L499 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:18,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:18,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:18,723 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1900930243, now seen corresponding path program 28 times [2022-04-06 04:50:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777828273] [2022-04-06 04:50:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 04:50:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:50:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:50:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:50:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:50:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:50:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:50:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:50:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:50:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:50:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:50:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:50:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:50:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:50:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:50:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:50:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:50:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:50:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:50:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:50:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:50:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:50:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:50:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:50:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-06 04:50:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777828273] [2022-04-06 04:50:19,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777828273] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930647097] [2022-04-06 04:50:19,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:50:19,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:19,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:19,580 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:19,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-06 04:50:19,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:50:19,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:19,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 52 conjunts are in the unsatisfiable core [2022-04-06 04:50:19,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-06 04:50:20,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-06 04:50:21,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930647097] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:21,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:21,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 29, 29] total 80 [2022-04-06 04:50:21,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046933344] [2022-04-06 04:50:21,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:21,115 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-04-06 04:50:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-04-06 04:50:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=5287, Unknown=0, NotChecked=0, Total=6320 [2022-04-06 04:50:21,117 INFO L87 Difference]: Start difference. First operand 241 states and 249 transitions. Second operand has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-06 04:50:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:23,861 INFO L93 Difference]: Finished difference Result 449 states and 531 transitions. [2022-04-06 04:50:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-04-06 04:50:23,861 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 258 [2022-04-06 04:50:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:23,863 INFO L225 Difference]: With dead ends: 449 [2022-04-06 04:50:23,863 INFO L226 Difference]: Without dead ends: 352 [2022-04-06 04:50:23,866 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11014 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5511, Invalid=27069, Unknown=0, NotChecked=0, Total=32580 [2022-04-06 04:50:23,867 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 761 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:23,867 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 156 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 04:50:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-04-06 04:50:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 251. [2022-04-06 04:50:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 200 states have (on average 1.02) internal successors, (204), 201 states have internal predecessors, (204), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-06 04:50:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2022-04-06 04:50:23,874 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 258 [2022-04-06 04:50:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:23,874 INFO L478 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2022-04-06 04:50:23,875 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-06 04:50:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2022-04-06 04:50:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-04-06 04:50:23,876 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:23,876 INFO L499 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:23,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:24,091 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:24,091 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 462951412, now seen corresponding path program 29 times [2022-04-06 04:50:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:24,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505587322] [2022-04-06 04:50:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 04:50:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:50:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:50:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:50:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:50:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:50:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:50:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:50:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:50:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:50:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:50:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:50:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:50:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:50:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:50:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:50:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:50:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:50:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:50:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:50:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:50:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:50:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:50:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:50:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:50:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1228 proven. 722 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-06 04:50:25,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505587322] [2022-04-06 04:50:25,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505587322] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518244767] [2022-04-06 04:50:25,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:50:25,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:25,019 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:25,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-06 04:50:25,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-04-06 04:50:25,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:25,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 54 conjunts are in the unsatisfiable core [2022-04-06 04:50:25,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-06 04:50:26,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-06 04:50:26,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518244767] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:26,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:26,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 83 [2022-04-06 04:50:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265912872] [2022-04-06 04:50:26,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:26,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-04-06 04:50:26,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-04-06 04:50:26,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=5289, Unknown=0, NotChecked=0, Total=6806 [2022-04-06 04:50:26,941 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-06 04:50:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:28,408 INFO L93 Difference]: Finished difference Result 458 states and 543 transitions. [2022-04-06 04:50:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-06 04:50:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 268 [2022-04-06 04:50:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:28,410 INFO L225 Difference]: With dead ends: 458 [2022-04-06 04:50:28,410 INFO L226 Difference]: Without dead ends: 357 [2022-04-06 04:50:28,411 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4870 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4054, Invalid=14036, Unknown=0, NotChecked=0, Total=18090 [2022-04-06 04:50:28,411 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 591 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:28,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 106 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 04:50:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-04-06 04:50:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 253. [2022-04-06 04:50:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 203 states have internal predecessors, (206), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-06 04:50:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 261 transitions. [2022-04-06 04:50:28,418 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 261 transitions. Word has length 268 [2022-04-06 04:50:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:28,418 INFO L478 AbstractCegarLoop]: Abstraction has 253 states and 261 transitions. [2022-04-06 04:50:28,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-06 04:50:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 261 transitions. [2022-04-06 04:50:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-04-06 04:50:28,420 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:28,420 INFO L499 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:28,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:28,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:28,639 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash -799830441, now seen corresponding path program 30 times [2022-04-06 04:50:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:28,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103158889] [2022-04-06 04:50:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-06 04:50:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:50:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:50:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:50:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:50:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:50:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:50:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:50:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:50:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:50:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:50:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:50:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:50:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:50:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:50:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:50:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:50:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:50:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:50:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:50:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:50:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:50:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:50:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:50:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:50:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 700 proven. 1302 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-06 04:50:29,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:29,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103158889] [2022-04-06 04:50:29,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103158889] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:29,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780676758] [2022-04-06 04:50:29,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:50:29,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:29,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:29,111 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:29,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-06 04:50:29,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-04-06 04:50:29,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:29,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 55 conjunts are in the unsatisfiable core [2022-04-06 04:50:29,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-06 04:50:29,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-06 04:50:30,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780676758] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:30,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:30,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 36 [2022-04-06 04:50:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741968274] [2022-04-06 04:50:30,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:30,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-06 04:50:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-06 04:50:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=809, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 04:50:30,075 INFO L87 Difference]: Start difference. First operand 253 states and 261 transitions. Second operand has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-06 04:50:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:30,760 INFO L93 Difference]: Finished difference Result 270 states and 280 transitions. [2022-04-06 04:50:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-06 04:50:30,760 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 270 [2022-04-06 04:50:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:30,761 INFO L225 Difference]: With dead ends: 270 [2022-04-06 04:50:30,761 INFO L226 Difference]: Without dead ends: 270 [2022-04-06 04:50:30,762 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 613 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1345, Invalid=3211, Unknown=0, NotChecked=0, Total=4556 [2022-04-06 04:50:30,762 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 145 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:30,762 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 84 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 04:50:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-04-06 04:50:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 265. [2022-04-06 04:50:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 211 states have (on average 1.018957345971564) internal successors, (215), 212 states have internal predecessors, (215), 30 states have call successors, (30), 24 states have call predecessors, (30), 23 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-06 04:50:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 274 transitions. [2022-04-06 04:50:30,768 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 274 transitions. Word has length 270 [2022-04-06 04:50:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:30,768 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 274 transitions. [2022-04-06 04:50:30,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-06 04:50:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 274 transitions. [2022-04-06 04:50:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-04-06 04:50:30,770 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:30,770 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:30,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-04-06 04:50:30,988 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-04-06 04:50:30,989 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1396717185, now seen corresponding path program 31 times [2022-04-06 04:50:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:30,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686233778] [2022-04-06 04:50:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:30,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-06 04:50:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:50:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:50:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:50:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:50:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:50:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:50:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:50:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:50:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:50:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:50:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:50:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:50:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:50:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:50:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:50:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:50:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:50:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:50:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:50:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:50:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:50:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:50:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:50:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:50:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:50:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:50:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1434 proven. 780 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-06 04:50:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:31,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686233778] [2022-04-06 04:50:31,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686233778] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:31,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515080109] [2022-04-06 04:50:31,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:50:31,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:31,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:31,990 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:32,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-06 04:50:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:32,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 56 conjunts are in the unsatisfiable core [2022-04-06 04:50:32,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1612 proven. 702 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2022-04-06 04:50:33,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1510 proven. 702 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-04-06 04:50:34,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515080109] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:34,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:34,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56, 56] total 87 [2022-04-06 04:50:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052917140] [2022-04-06 04:50:34,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:34,030 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-04-06 04:50:34,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-04-06 04:50:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1658, Invalid=5824, Unknown=0, NotChecked=0, Total=7482 [2022-04-06 04:50:34,031 INFO L87 Difference]: Start difference. First operand 265 states and 274 transitions. Second operand has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) [2022-04-06 04:50:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:35,722 INFO L93 Difference]: Finished difference Result 480 states and 569 transitions. [2022-04-06 04:50:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-06 04:50:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) Word has length 286 [2022-04-06 04:50:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:35,724 INFO L225 Difference]: With dead ends: 480 [2022-04-06 04:50:35,724 INFO L226 Difference]: Without dead ends: 375 [2022-04-06 04:50:35,725 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5356 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4387, Invalid=15353, Unknown=0, NotChecked=0, Total=19740 [2022-04-06 04:50:35,725 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 488 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:35,725 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 148 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 04:50:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-04-06 04:50:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 267. [2022-04-06 04:50:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 214 states have internal predecessors, (217), 30 states have call successors, (30), 24 states have call predecessors, (30), 23 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-06 04:50:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 276 transitions. [2022-04-06 04:50:35,732 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 276 transitions. Word has length 286 [2022-04-06 04:50:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:35,732 INFO L478 AbstractCegarLoop]: Abstraction has 267 states and 276 transitions. [2022-04-06 04:50:35,733 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) [2022-04-06 04:50:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 276 transitions. [2022-04-06 04:50:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-04-06 04:50:35,734 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:35,734 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:35,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:35,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:35,947 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2076929758, now seen corresponding path program 32 times [2022-04-06 04:50:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:35,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151192524] [2022-04-06 04:50:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 04:50:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:50:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:50:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:50:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:50:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:50:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:50:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:50:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:50:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:50:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:50:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:50:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:50:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:50:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:50:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:50:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:50:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:50:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:50:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:50:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:50:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:50:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:50:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:50:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:50:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:50:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:50:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1434 proven. 834 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-06 04:50:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:37,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151192524] [2022-04-06 04:50:37,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151192524] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:37,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235575600] [2022-04-06 04:50:37,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:50:37,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:37,062 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:37,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-06 04:50:37,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:50:37,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:37,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 58 conjunts are in the unsatisfiable core [2022-04-06 04:50:37,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-06 04:50:38,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-06 04:50:38,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235575600] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:38,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:38,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 32, 32] total 89 [2022-04-06 04:50:38,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303120036] [2022-04-06 04:50:38,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:38,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-04-06 04:50:38,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-04-06 04:50:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=6550, Unknown=0, NotChecked=0, Total=7832 [2022-04-06 04:50:38,888 INFO L87 Difference]: Start difference. First operand 267 states and 276 transitions. Second operand has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-06 04:50:42,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:42,034 INFO L93 Difference]: Finished difference Result 499 states and 591 transitions. [2022-04-06 04:50:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-04-06 04:50:42,035 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 288 [2022-04-06 04:50:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:42,036 INFO L225 Difference]: With dead ends: 499 [2022-04-06 04:50:42,036 INFO L226 Difference]: Without dead ends: 390 [2022-04-06 04:50:42,038 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 631 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13849 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6843, Invalid=33759, Unknown=0, NotChecked=0, Total=40602 [2022-04-06 04:50:42,039 INFO L913 BasicCegarLoop]: 93 mSDtfsCounter, 784 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:42,039 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 160 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 04:50:42,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-04-06 04:50:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 277. [2022-04-06 04:50:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 221 states have (on average 1.0180995475113122) internal successors, (225), 222 states have internal predecessors, (225), 31 states have call successors, (31), 25 states have call predecessors, (31), 24 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-06 04:50:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 286 transitions. [2022-04-06 04:50:42,045 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 286 transitions. Word has length 288 [2022-04-06 04:50:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:42,045 INFO L478 AbstractCegarLoop]: Abstraction has 277 states and 286 transitions. [2022-04-06 04:50:42,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-06 04:50:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 286 transitions. [2022-04-06 04:50:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-04-06 04:50:42,048 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:42,048 INFO L499 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:42,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:42,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:42,269 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1023800729, now seen corresponding path program 33 times [2022-04-06 04:50:42,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:42,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157031241] [2022-04-06 04:50:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:42,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 04:50:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:50:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:50:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:50:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:50:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:50:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:50:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:50:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:50:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:50:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:50:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:50:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:50:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:50:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:50:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:50:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:50:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:50:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:50:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:50:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:50:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:50:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:50:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:50:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:50:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:50:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:50:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:50:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-06 04:50:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:43,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157031241] [2022-04-06 04:50:43,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157031241] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:43,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527311839] [2022-04-06 04:50:43,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:50:43,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:43,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:43,380 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:43,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-06 04:50:43,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-04-06 04:50:43,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:43,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 60 conjunts are in the unsatisfiable core [2022-04-06 04:50:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-06 04:50:44,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-06 04:50:45,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527311839] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:45,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:45,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 33, 33] total 92 [2022-04-06 04:50:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512930089] [2022-04-06 04:50:45,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:45,293 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-04-06 04:50:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-04-06 04:50:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1371, Invalid=7001, Unknown=0, NotChecked=0, Total=8372 [2022-04-06 04:50:45,295 INFO L87 Difference]: Start difference. First operand 277 states and 286 transitions. Second operand has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-06 04:50:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:48,724 INFO L93 Difference]: Finished difference Result 517 states and 612 transitions. [2022-04-06 04:50:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-04-06 04:50:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 298 [2022-04-06 04:50:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:48,726 INFO L225 Difference]: With dead ends: 517 [2022-04-06 04:50:48,726 INFO L226 Difference]: Without dead ends: 404 [2022-04-06 04:50:48,730 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14866 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7319, Invalid=36153, Unknown=0, NotChecked=0, Total=43472 [2022-04-06 04:50:48,730 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 863 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:48,731 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 178 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 04:50:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-04-06 04:50:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 287. [2022-04-06 04:50:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.017467248908297) internal successors, (233), 230 states have internal predecessors, (233), 32 states have call successors, (32), 26 states have call predecessors, (32), 25 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-06 04:50:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 296 transitions. [2022-04-06 04:50:48,749 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 296 transitions. Word has length 298 [2022-04-06 04:50:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:48,749 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 296 transitions. [2022-04-06 04:50:48,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-06 04:50:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 296 transitions. [2022-04-06 04:50:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-04-06 04:50:48,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:48,751 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:48,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:48,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-04-06 04:50:48,978 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash 313307984, now seen corresponding path program 34 times [2022-04-06 04:50:48,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641306259] [2022-04-06 04:50:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:48,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 04:50:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:50:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:50:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:50:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:50:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:50:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:50:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:50:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:50:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:50:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:50:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:50:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:50:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:50:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:50:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:50:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:50:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:50:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:50:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:50:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:50:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:50:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:50:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:50:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:50:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:50:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:50:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:50:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:50:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-06 04:50:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:50,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641306259] [2022-04-06 04:50:50,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641306259] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:50,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543264508] [2022-04-06 04:50:50,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:50:50,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:50,123 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:50,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-06 04:50:50,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:50:50,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:50,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 62 conjunts are in the unsatisfiable core [2022-04-06 04:50:50,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-06 04:50:51,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-06 04:50:52,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543264508] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:52,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:52,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 34, 34] total 95 [2022-04-06 04:50:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043034558] [2022-04-06 04:50:52,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:52,112 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-04-06 04:50:52,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-04-06 04:50:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1463, Invalid=7467, Unknown=0, NotChecked=0, Total=8930 [2022-04-06 04:50:52,113 INFO L87 Difference]: Start difference. First operand 287 states and 296 transitions. Second operand has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-06 04:50:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:50:55,793 INFO L93 Difference]: Finished difference Result 535 states and 633 transitions. [2022-04-06 04:50:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-04-06 04:50:55,794 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 308 [2022-04-06 04:50:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:50:55,795 INFO L225 Difference]: With dead ends: 535 [2022-04-06 04:50:55,795 INFO L226 Difference]: Without dead ends: 418 [2022-04-06 04:50:55,798 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7811, Invalid=38629, Unknown=0, NotChecked=0, Total=46440 [2022-04-06 04:50:55,799 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 852 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4080 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 4864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 4080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 04:50:55,799 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 196 Invalid, 4864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 4080 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 04:50:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-04-06 04:50:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 297. [2022-04-06 04:50:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 237 states have (on average 1.0168776371308017) internal successors, (241), 238 states have internal predecessors, (241), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 04:50:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2022-04-06 04:50:55,805 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 308 [2022-04-06 04:50:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:50:55,806 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2022-04-06 04:50:55,806 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-06 04:50:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2022-04-06 04:50:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-04-06 04:50:55,807 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:50:55,808 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:50:55,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-06 04:50:56,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-04-06 04:50:56,024 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:50:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:50:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2077768263, now seen corresponding path program 35 times [2022-04-06 04:50:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:50:56,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407092609] [2022-04-06 04:50:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:50:56,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:50:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:50:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 04:50:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:50:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:50:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:50:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:50:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:50:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:50:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:50:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:50:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:50:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:50:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:50:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:50:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:50:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:50:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:50:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:50:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:50:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:50:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:50:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:50:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:50:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:50:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:50:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:50:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:50:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:50:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:50:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:50:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:50:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:50:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-06 04:50:57,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:50:57,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407092609] [2022-04-06 04:50:57,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407092609] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:50:57,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096777830] [2022-04-06 04:50:57,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:50:57,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:50:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:50:57,164 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:50:57,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-06 04:50:57,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-04-06 04:50:57,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:50:57,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 64 conjunts are in the unsatisfiable core [2022-04-06 04:50:57,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:50:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-06 04:50:59,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:50:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-06 04:50:59,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096777830] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:50:59,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:50:59,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 98 [2022-04-06 04:50:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281863310] [2022-04-06 04:50:59,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:50:59,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-04-06 04:50:59,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:50:59,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-04-06 04:50:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=7389, Unknown=0, NotChecked=0, Total=9506 [2022-04-06 04:50:59,715 INFO L87 Difference]: Start difference. First operand 297 states and 306 transitions. Second operand has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-06 04:51:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:01,684 INFO L93 Difference]: Finished difference Result 544 states and 645 transitions. [2022-04-06 04:51:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-06 04:51:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 318 [2022-04-06 04:51:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:01,686 INFO L225 Difference]: With dead ends: 544 [2022-04-06 04:51:01,686 INFO L226 Difference]: Without dead ends: 423 [2022-04-06 04:51:01,688 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6895 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5684, Invalid=19756, Unknown=0, NotChecked=0, Total=25440 [2022-04-06 04:51:01,688 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 760 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:01,688 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 131 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 04:51:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-04-06 04:51:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 299. [2022-04-06 04:51:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 240 states have internal predecessors, (243), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 04:51:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 308 transitions. [2022-04-06 04:51:01,695 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 308 transitions. Word has length 318 [2022-04-06 04:51:01,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:01,695 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 308 transitions. [2022-04-06 04:51:01,695 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-06 04:51:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 308 transitions. [2022-04-06 04:51:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-04-06 04:51:01,697 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:01,697 INFO L499 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:01,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:01,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-04-06 04:51:01,915 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1456322026, now seen corresponding path program 36 times [2022-04-06 04:51:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889524221] [2022-04-06 04:51:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:51:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:51:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:51:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:51:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:51:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:51:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:51:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:51:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:51:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:51:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:51:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:51:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:51:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:51:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:51:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:51:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:51:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:51:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:51:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:51:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:51:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:51:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:51:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:51:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:51:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:51:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:51:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:51:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:51:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:51:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-06 04:51:02,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:02,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889524221] [2022-04-06 04:51:02,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889524221] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:02,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118888915] [2022-04-06 04:51:02,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:51:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:02,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:02,562 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:02,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-06 04:51:02,736 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2022-04-06 04:51:02,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:02,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 65 conjunts are in the unsatisfiable core [2022-04-06 04:51:02,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-06 04:51:03,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-06 04:51:03,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118888915] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:03,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:03,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 41 [2022-04-06 04:51:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121896830] [2022-04-06 04:51:03,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:03,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-06 04:51:03,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-06 04:51:03,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=1029, Unknown=0, NotChecked=0, Total=1640 [2022-04-06 04:51:03,687 INFO L87 Difference]: Start difference. First operand 299 states and 308 transitions. Second operand has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 04:51:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:04,441 INFO L93 Difference]: Finished difference Result 316 states and 327 transitions. [2022-04-06 04:51:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-06 04:51:04,442 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 320 [2022-04-06 04:51:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:04,443 INFO L225 Difference]: With dead ends: 316 [2022-04-06 04:51:04,443 INFO L226 Difference]: Without dead ends: 316 [2022-04-06 04:51:04,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1825, Invalid=4181, Unknown=0, NotChecked=0, Total=6006 [2022-04-06 04:51:04,444 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 175 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:04,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 74 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 04:51:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-06 04:51:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2022-04-06 04:51:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 248 states have (on average 1.0161290322580645) internal successors, (252), 249 states have internal predecessors, (252), 35 states have call successors, (35), 28 states have call predecessors, (35), 27 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-06 04:51:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 321 transitions. [2022-04-06 04:51:04,450 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 321 transitions. Word has length 320 [2022-04-06 04:51:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:04,450 INFO L478 AbstractCegarLoop]: Abstraction has 311 states and 321 transitions. [2022-04-06 04:51:04,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 04:51:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 321 transitions. [2022-04-06 04:51:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-04-06 04:51:04,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:04,452 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:04,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:04,666 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-04-06 04:51:04,667 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 831941394, now seen corresponding path program 37 times [2022-04-06 04:51:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:04,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106339805] [2022-04-06 04:51:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-06 04:51:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:51:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:51:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:51:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:51:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:51:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:51:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:51:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:51:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:51:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:51:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:51:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:51:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:51:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:51:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:51:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:51:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:51:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:51:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:51:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:51:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:51:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:51:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:51:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:51:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:51:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:51:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:51:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:51:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:51:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:51:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:51:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-06 04:51:05,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:05,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106339805] [2022-04-06 04:51:05,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106339805] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:05,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896875430] [2022-04-06 04:51:05,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:51:05,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:05,916 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:05,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-06 04:51:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:06,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 66 conjunts are in the unsatisfiable core [2022-04-06 04:51:06,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2022-04-06 04:51:07,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2022-04-06 04:51:08,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896875430] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:08,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:08,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 66, 66] total 102 [2022-04-06 04:51:08,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066987187] [2022-04-06 04:51:08,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:08,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-04-06 04:51:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-04-06 04:51:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=8019, Unknown=0, NotChecked=0, Total=10302 [2022-04-06 04:51:08,463 INFO L87 Difference]: Start difference. First operand 311 states and 321 transitions. Second operand has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2022-04-06 04:51:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:10,610 INFO L93 Difference]: Finished difference Result 566 states and 671 transitions. [2022-04-06 04:51:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-04-06 04:51:10,610 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) Word has length 336 [2022-04-06 04:51:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:10,612 INFO L225 Difference]: With dead ends: 566 [2022-04-06 04:51:10,612 INFO L226 Difference]: Without dead ends: 441 [2022-04-06 04:51:10,615 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7471 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6077, Invalid=21313, Unknown=0, NotChecked=0, Total=27390 [2022-04-06 04:51:10,615 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 763 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:10,615 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 153 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 04:51:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-04-06 04:51:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 313. [2022-04-06 04:51:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 250 states have (on average 1.016) internal successors, (254), 251 states have internal predecessors, (254), 35 states have call successors, (35), 28 states have call predecessors, (35), 27 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-06 04:51:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2022-04-06 04:51:10,622 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 336 [2022-04-06 04:51:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:10,622 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2022-04-06 04:51:10,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2022-04-06 04:51:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2022-04-06 04:51:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-04-06 04:51:10,624 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:10,624 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:10,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:10,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-04-06 04:51:10,856 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -373333003, now seen corresponding path program 38 times [2022-04-06 04:51:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:10,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272303962] [2022-04-06 04:51:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-06 04:51:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:51:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:51:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:51:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:51:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:51:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:51:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:51:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:51:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:51:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:51:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:51:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:51:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:51:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:51:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:51:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:51:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:51:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:51:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:51:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:51:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:51:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:51:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:51:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:51:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:51:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:51:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:51:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:51:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:51:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:51:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:51:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-06 04:51:12,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272303962] [2022-04-06 04:51:12,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272303962] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577625014] [2022-04-06 04:51:12,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:51:12,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:12,144 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:12,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-06 04:51:12,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:51:12,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:12,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 68 conjunts are in the unsatisfiable core [2022-04-06 04:51:12,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-06 04:51:13,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-06 04:51:14,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577625014] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:14,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:14,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 37, 37] total 104 [2022-04-06 04:51:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924184221] [2022-04-06 04:51:14,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:14,387 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-04-06 04:51:14,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:14,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-04-06 04:51:14,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1757, Invalid=8955, Unknown=0, NotChecked=0, Total=10712 [2022-04-06 04:51:14,389 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-06 04:51:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:18,385 INFO L93 Difference]: Finished difference Result 585 states and 693 transitions. [2022-04-06 04:51:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-04-06 04:51:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 338 [2022-04-06 04:51:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:18,387 INFO L225 Difference]: With dead ends: 585 [2022-04-06 04:51:18,387 INFO L226 Difference]: Without dead ends: 456 [2022-04-06 04:51:18,389 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 741 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19294 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9383, Invalid=46549, Unknown=0, NotChecked=0, Total=55932 [2022-04-06 04:51:18,390 INFO L913 BasicCegarLoop]: 108 mSDtfsCounter, 983 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 4389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:18,390 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 170 Invalid, 4389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 04:51:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-04-06 04:51:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 323. [2022-04-06 04:51:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 258 states have (on average 1.0155038759689923) internal successors, (262), 259 states have internal predecessors, (262), 36 states have call successors, (36), 29 states have call predecessors, (36), 28 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-06 04:51:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 333 transitions. [2022-04-06 04:51:18,396 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 333 transitions. Word has length 338 [2022-04-06 04:51:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:18,396 INFO L478 AbstractCegarLoop]: Abstraction has 323 states and 333 transitions. [2022-04-06 04:51:18,397 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-06 04:51:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 333 transitions. [2022-04-06 04:51:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-04-06 04:51:18,399 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:18,399 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:18,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:18,624 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-04-06 04:51:18,624 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1595795116, now seen corresponding path program 39 times [2022-04-06 04:51:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:18,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467311104] [2022-04-06 04:51:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 04:51:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:51:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:51:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:51:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:51:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:51:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:51:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:51:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:51:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:51:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:51:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:51:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:51:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:51:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:51:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:51:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:51:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:51:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:51:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:51:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:51:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:51:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:51:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:51:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:51:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:51:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:51:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:51:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:51:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:51:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:51:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:51:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:51:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-06 04:51:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467311104] [2022-04-06 04:51:19,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467311104] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193810239] [2022-04-06 04:51:19,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:51:19,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:19,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:19,964 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:19,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-06 04:51:20,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2022-04-06 04:51:20,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 70 conjunts are in the unsatisfiable core [2022-04-06 04:51:20,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-06 04:51:21,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-06 04:51:22,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193810239] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:22,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:22,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 38, 38] total 107 [2022-04-06 04:51:22,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853044928] [2022-04-06 04:51:22,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:22,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-04-06 04:51:22,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-04-06 04:51:22,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1861, Invalid=9481, Unknown=0, NotChecked=0, Total=11342 [2022-04-06 04:51:22,415 INFO L87 Difference]: Start difference. First operand 323 states and 333 transitions. Second operand has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-06 04:51:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:26,839 INFO L93 Difference]: Finished difference Result 603 states and 714 transitions. [2022-04-06 04:51:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-04-06 04:51:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 348 [2022-04-06 04:51:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:26,841 INFO L225 Difference]: With dead ends: 603 [2022-04-06 04:51:26,841 INFO L226 Difference]: Without dead ends: 470 [2022-04-06 04:51:26,844 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 763 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20491 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9939, Invalid=49353, Unknown=0, NotChecked=0, Total=59292 [2022-04-06 04:51:26,845 INFO L913 BasicCegarLoop]: 111 mSDtfsCounter, 960 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:26,845 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 198 Invalid, 5238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 4389 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 04:51:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-04-06 04:51:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 333. [2022-04-06 04:51:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 266 states have (on average 1.0150375939849625) internal successors, (270), 267 states have internal predecessors, (270), 37 states have call successors, (37), 30 states have call predecessors, (37), 29 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-06 04:51:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 343 transitions. [2022-04-06 04:51:26,851 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 343 transitions. Word has length 348 [2022-04-06 04:51:26,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:26,852 INFO L478 AbstractCegarLoop]: Abstraction has 333 states and 343 transitions. [2022-04-06 04:51:26,852 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-06 04:51:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 343 transitions. [2022-04-06 04:51:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-04-06 04:51:26,854 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:26,854 INFO L499 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:26,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:27,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-04-06 04:51:27,068 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:27,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2025393501, now seen corresponding path program 40 times [2022-04-06 04:51:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:27,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000131126] [2022-04-06 04:51:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-06 04:51:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:51:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:51:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:51:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:51:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:51:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:51:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:51:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:51:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:51:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:51:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:51:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:51:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:51:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:51:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:51:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:51:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:51:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:51:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:51:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:51:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:51:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:51:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:51:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:51:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:51:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:51:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:51:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:51:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:51:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:51:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:51:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:51:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:51:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-06 04:51:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000131126] [2022-04-06 04:51:28,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000131126] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:28,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112939915] [2022-04-06 04:51:28,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:51:28,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:28,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:28,571 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:28,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-06 04:51:28,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:51:28,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:28,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 72 conjunts are in the unsatisfiable core [2022-04-06 04:51:28,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-06 04:51:30,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-06 04:51:31,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112939915] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:31,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:31,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 39, 39] total 110 [2022-04-06 04:51:31,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982219272] [2022-04-06 04:51:31,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:31,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-04-06 04:51:31,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-04-06 04:51:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=10022, Unknown=0, NotChecked=0, Total=11990 [2022-04-06 04:51:31,087 INFO L87 Difference]: Start difference. First operand 333 states and 343 transitions. Second operand has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-06 04:51:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:35,771 INFO L93 Difference]: Finished difference Result 621 states and 735 transitions. [2022-04-06 04:51:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-04-06 04:51:35,771 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 358 [2022-04-06 04:51:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:35,772 INFO L225 Difference]: With dead ends: 621 [2022-04-06 04:51:35,773 INFO L226 Difference]: Without dead ends: 484 [2022-04-06 04:51:35,775 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 785 SyntacticMatches, 1 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21724 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10511, Invalid=52239, Unknown=0, NotChecked=0, Total=62750 [2022-04-06 04:51:35,776 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 1347 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 1124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:35,776 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 191 Invalid, 5696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1124 Valid, 4572 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 04:51:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-04-06 04:51:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 343. [2022-04-06 04:51:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 275 states have internal predecessors, (278), 38 states have call successors, (38), 31 states have call predecessors, (38), 30 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 04:51:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 353 transitions. [2022-04-06 04:51:35,783 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 353 transitions. Word has length 358 [2022-04-06 04:51:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:35,783 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 353 transitions. [2022-04-06 04:51:35,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-06 04:51:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 353 transitions. [2022-04-06 04:51:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-04-06 04:51:35,786 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:35,786 INFO L499 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:35,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:35,999 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-04-06 04:51:35,999 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash 372111322, now seen corresponding path program 41 times [2022-04-06 04:51:36,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:36,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023591959] [2022-04-06 04:51:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:36,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-06 04:51:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:51:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:51:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:51:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:51:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:51:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:51:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:51:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:51:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:51:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:51:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:51:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:51:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:51:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:51:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:51:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:51:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:51:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:51:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:51:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:51:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:51:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:51:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:51:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:51:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:51:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:51:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:51:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:51:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:51:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:51:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:51:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:51:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:51:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:51:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-06 04:51:37,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023591959] [2022-04-06 04:51:37,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023591959] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908927719] [2022-04-06 04:51:37,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:51:37,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:37,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:37,504 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:37,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-06 04:51:37,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2022-04-06 04:51:37,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:37,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 74 conjunts are in the unsatisfiable core [2022-04-06 04:51:37,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-06 04:51:39,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-06 04:51:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908927719] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:40,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:40,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 113 [2022-04-06 04:51:40,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368395152] [2022-04-06 04:51:40,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:40,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-04-06 04:51:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-04-06 04:51:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2817, Invalid=9839, Unknown=0, NotChecked=0, Total=12656 [2022-04-06 04:51:40,538 INFO L87 Difference]: Start difference. First operand 343 states and 353 transitions. Second operand has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-06 04:51:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:43,033 INFO L93 Difference]: Finished difference Result 630 states and 747 transitions. [2022-04-06 04:51:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-06 04:51:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 368 [2022-04-06 04:51:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:43,035 INFO L225 Difference]: With dead ends: 630 [2022-04-06 04:51:43,035 INFO L226 Difference]: Without dead ends: 489 [2022-04-06 04:51:43,037 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9270 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7589, Invalid=26451, Unknown=0, NotChecked=0, Total=34040 [2022-04-06 04:51:43,037 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 719 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:43,037 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 136 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 04:51:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-04-06 04:51:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 345. [2022-04-06 04:51:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 276 states have (on average 1.0144927536231885) internal successors, (280), 277 states have internal predecessors, (280), 38 states have call successors, (38), 31 states have call predecessors, (38), 30 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 04:51:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2022-04-06 04:51:43,043 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 368 [2022-04-06 04:51:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:43,044 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2022-04-06 04:51:43,044 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-06 04:51:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2022-04-06 04:51:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-04-06 04:51:43,046 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:43,046 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:43,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-04-06 04:51:43,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:43,263 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1027431235, now seen corresponding path program 42 times [2022-04-06 04:51:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292662036] [2022-04-06 04:51:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:51:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:51:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:51:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:51:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:51:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:51:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:51:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:51:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:51:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:51:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:51:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:51:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:51:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:51:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:51:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:51:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:51:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:51:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:51:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:51:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:51:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:51:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:51:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:51:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:51:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:51:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:51:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:51:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:51:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:51:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:51:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:51:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:51:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:51:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:51:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-06 04:51:43,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292662036] [2022-04-06 04:51:43,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292662036] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682089173] [2022-04-06 04:51:43,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:51:43,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:43,943 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:43,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-06 04:51:44,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-04-06 04:51:44,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:44,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 75 conjunts are in the unsatisfiable core [2022-04-06 04:51:44,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-06 04:51:44,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-06 04:51:45,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682089173] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:45,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:45,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 46 [2022-04-06 04:51:45,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338094785] [2022-04-06 04:51:45,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:45,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-06 04:51:45,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:45,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-06 04:51:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=1274, Unknown=0, NotChecked=0, Total=2070 [2022-04-06 04:51:45,223 INFO L87 Difference]: Start difference. First operand 345 states and 355 transitions. Second operand has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 04:51:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:46,209 INFO L93 Difference]: Finished difference Result 362 states and 374 transitions. [2022-04-06 04:51:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-06 04:51:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 370 [2022-04-06 04:51:46,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:46,213 INFO L225 Difference]: With dead ends: 362 [2022-04-06 04:51:46,213 INFO L226 Difference]: Without dead ends: 362 [2022-04-06 04:51:46,214 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 843 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2380, Invalid=5276, Unknown=0, NotChecked=0, Total=7656 [2022-04-06 04:51:46,214 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 188 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:46,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 94 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 04:51:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-04-06 04:51:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-04-06 04:51:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.0140350877192983) internal successors, (289), 286 states have internal predecessors, (289), 40 states have call successors, (40), 32 states have call predecessors, (40), 31 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-06 04:51:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 368 transitions. [2022-04-06 04:51:46,219 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 368 transitions. Word has length 370 [2022-04-06 04:51:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:46,220 INFO L478 AbstractCegarLoop]: Abstraction has 357 states and 368 transitions. [2022-04-06 04:51:46,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 04:51:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 368 transitions. [2022-04-06 04:51:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-04-06 04:51:46,222 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:46,222 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:46,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-04-06 04:51:46,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:46,448 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1645128731, now seen corresponding path program 43 times [2022-04-06 04:51:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:46,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527057113] [2022-04-06 04:51:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 04:51:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:51:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:51:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:51:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:51:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:51:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:51:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:51:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:51:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:51:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:51:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:51:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:51:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:51:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:51:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:51:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:51:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:51:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:51:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:51:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:51:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:51:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:51:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:51:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:51:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:51:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:51:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:51:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:51:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:51:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:51:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:51:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:51:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:51:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:51:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:51:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:51:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-06 04:51:48,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527057113] [2022-04-06 04:51:48,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527057113] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604930715] [2022-04-06 04:51:48,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:51:48,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:48,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:48,052 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:48,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-06 04:51:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:48,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 76 conjunts are in the unsatisfiable core [2022-04-06 04:51:48,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2022-04-06 04:51:50,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2022-04-06 04:51:51,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604930715] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:51,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:51,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 76, 76] total 117 [2022-04-06 04:51:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201923616] [2022-04-06 04:51:51,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:51,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-04-06 04:51:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-04-06 04:51:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3008, Invalid=10564, Unknown=0, NotChecked=0, Total=13572 [2022-04-06 04:51:51,254 INFO L87 Difference]: Start difference. First operand 357 states and 368 transitions. Second operand has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2022-04-06 04:51:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:51:53,742 INFO L93 Difference]: Finished difference Result 652 states and 773 transitions. [2022-04-06 04:51:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-04-06 04:51:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) Word has length 386 [2022-04-06 04:51:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:51:53,745 INFO L225 Difference]: With dead ends: 652 [2022-04-06 04:51:53,745 INFO L226 Difference]: Without dead ends: 507 [2022-04-06 04:51:53,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9936 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=8042, Invalid=28248, Unknown=0, NotChecked=0, Total=36290 [2022-04-06 04:51:53,748 INFO L913 BasicCegarLoop]: 86 mSDtfsCounter, 1027 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:51:53,748 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 103 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 04:51:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-04-06 04:51:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 359. [2022-04-06 04:51:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 287 states have (on average 1.0139372822299653) internal successors, (291), 288 states have internal predecessors, (291), 40 states have call successors, (40), 32 states have call predecessors, (40), 31 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-06 04:51:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 370 transitions. [2022-04-06 04:51:53,755 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 370 transitions. Word has length 386 [2022-04-06 04:51:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:51:53,755 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 370 transitions. [2022-04-06 04:51:53,755 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2022-04-06 04:51:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 370 transitions. [2022-04-06 04:51:53,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-04-06 04:51:53,758 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:51:53,758 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:51:53,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-04-06 04:51:53,963 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-04-06 04:51:53,963 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:51:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:51:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1522029048, now seen corresponding path program 44 times [2022-04-06 04:51:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:51:53,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970545444] [2022-04-06 04:51:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:51:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:51:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:51:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 04:51:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:51:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:51:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:51:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:51:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:51:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:51:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:51:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:51:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:51:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:51:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:51:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:51:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:51:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:51:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:51:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:51:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:51:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:51:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:51:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:51:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:51:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:51:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:51:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:51:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:51:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:51:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:51:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:51:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:51:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:51:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:51:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:51:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:51:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:51:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:51:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:51:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:51:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-06 04:51:55,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:51:55,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970545444] [2022-04-06 04:51:55,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970545444] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:51:55,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921774525] [2022-04-06 04:51:55,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:51:55,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:51:55,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:51:55,608 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:51:55,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-06 04:51:55,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:51:55,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:51:55,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 78 conjunts are in the unsatisfiable core [2022-04-06 04:51:55,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:51:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-06 04:51:57,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:51:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-06 04:51:58,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921774525] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:51:58,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:51:58,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 42, 42] total 119 [2022-04-06 04:51:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643250514] [2022-04-06 04:51:58,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:51:58,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-04-06 04:51:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:51:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-04-06 04:51:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=11735, Unknown=0, NotChecked=0, Total=14042 [2022-04-06 04:51:58,334 INFO L87 Difference]: Start difference. First operand 359 states and 370 transitions. Second operand has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-04-06 04:52:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:03,499 INFO L93 Difference]: Finished difference Result 671 states and 795 transitions. [2022-04-06 04:52:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-04-06 04:52:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Word has length 388 [2022-04-06 04:52:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:03,501 INFO L225 Difference]: With dead ends: 671 [2022-04-06 04:52:03,501 INFO L226 Difference]: Without dead ends: 522 [2022-04-06 04:52:03,504 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 851 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25639 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=12323, Invalid=61389, Unknown=0, NotChecked=0, Total=73712 [2022-04-06 04:52:03,505 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 1092 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:03,505 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 210 Invalid, 5771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 04:52:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-04-06 04:52:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 369. [2022-04-06 04:52:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 296 states have internal predecessors, (299), 41 states have call successors, (41), 33 states have call predecessors, (41), 32 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-06 04:52:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 380 transitions. [2022-04-06 04:52:03,510 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 380 transitions. Word has length 388 [2022-04-06 04:52:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:03,510 INFO L478 AbstractCegarLoop]: Abstraction has 369 states and 380 transitions. [2022-04-06 04:52:03,511 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-04-06 04:52:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 380 transitions. [2022-04-06 04:52:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-04-06 04:52:03,513 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:03,513 INFO L499 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:03,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:03,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-04-06 04:52:03,736 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1213907201, now seen corresponding path program 45 times [2022-04-06 04:52:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:03,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997469978] [2022-04-06 04:52:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:03,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:52:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-06 04:52:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:52:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:52:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:52:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:52:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:52:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:52:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:52:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:52:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:52:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:52:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:52:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:52:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:52:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:52:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:52:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:52:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:52:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:52:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:52:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:52:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:52:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:52:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:52:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:52:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:52:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:52:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:52:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:52:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:52:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:52:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:52:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:52:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:52:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:52:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:52:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:52:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:52:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 2853 proven. 1593 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-06 04:52:05,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:52:05,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997469978] [2022-04-06 04:52:05,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997469978] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:52:05,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108620784] [2022-04-06 04:52:05,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:52:05,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:05,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:52:05,693 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:52:05,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-06 04:52:05,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-04-06 04:52:05,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:52:05,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 80 conjunts are in the unsatisfiable core [2022-04-06 04:52:05,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:52:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-06 04:52:07,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:52:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-06 04:52:08,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108620784] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:52:08,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:52:08,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 43, 43] total 122 [2022-04-06 04:52:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140229684] [2022-04-06 04:52:08,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:52:08,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-04-06 04:52:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:52:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-04-06 04:52:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2426, Invalid=12336, Unknown=0, NotChecked=0, Total=14762 [2022-04-06 04:52:08,566 INFO L87 Difference]: Start difference. First operand 369 states and 380 transitions. Second operand has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 04:52:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:13,838 INFO L93 Difference]: Finished difference Result 689 states and 816 transitions. [2022-04-06 04:52:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-04-06 04:52:13,838 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Word has length 398 [2022-04-06 04:52:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:13,840 INFO L225 Difference]: With dead ends: 689 [2022-04-06 04:52:13,840 INFO L226 Difference]: Without dead ends: 536 [2022-04-06 04:52:13,844 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27016 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=12959, Invalid=64603, Unknown=0, NotChecked=0, Total=77562 [2022-04-06 04:52:13,844 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 1411 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4477 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 4477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:13,844 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 193 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 4477 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 04:52:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-04-06 04:52:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 379. [2022-04-06 04:52:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 303 states have (on average 1.0132013201320131) internal successors, (307), 304 states have internal predecessors, (307), 42 states have call successors, (42), 34 states have call predecessors, (42), 33 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-06 04:52:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 390 transitions. [2022-04-06 04:52:13,850 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 390 transitions. Word has length 398 [2022-04-06 04:52:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:13,850 INFO L478 AbstractCegarLoop]: Abstraction has 379 states and 390 transitions. [2022-04-06 04:52:13,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 04:52:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 390 transitions. [2022-04-06 04:52:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-04-06 04:52:13,853 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:13,853 INFO L499 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:13,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:14,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-04-06 04:52:14,068 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 320244022, now seen corresponding path program 46 times [2022-04-06 04:52:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:14,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181130990] [2022-04-06 04:52:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:52:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-06 04:52:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:52:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:52:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:52:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:52:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:52:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:52:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:52:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:52:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:52:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:52:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:52:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:52:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:52:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:52:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:52:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:52:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:52:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:52:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:52:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:52:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:52:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:52:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:52:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:52:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:52:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:52:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:52:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:52:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:52:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:52:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:52:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:52:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:52:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:52:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:52:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:52:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:52:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:52:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3006 proven. 1674 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-06 04:52:15,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:52:15,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181130990] [2022-04-06 04:52:15,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181130990] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:52:15,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461929308] [2022-04-06 04:52:15,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:52:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:52:15,902 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:52:15,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-06 04:52:16,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:52:16,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:52:16,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 82 conjunts are in the unsatisfiable core [2022-04-06 04:52:16,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:52:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-06 04:52:18,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:52:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-06 04:52:18,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461929308] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:52:18,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:52:18,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 44, 44] total 125 [2022-04-06 04:52:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682771110] [2022-04-06 04:52:18,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:52:18,837 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-04-06 04:52:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:52:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-04-06 04:52:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2548, Invalid=12952, Unknown=0, NotChecked=0, Total=15500 [2022-04-06 04:52:18,838 INFO L87 Difference]: Start difference. First operand 379 states and 390 transitions. Second operand has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-04-06 04:52:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:24,276 INFO L93 Difference]: Finished difference Result 707 states and 837 transitions. [2022-04-06 04:52:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-04-06 04:52:24,277 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 408 [2022-04-06 04:52:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:24,278 INFO L225 Difference]: With dead ends: 707 [2022-04-06 04:52:24,278 INFO L226 Difference]: Without dead ends: 550 [2022-04-06 04:52:24,283 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28429 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=13611, Invalid=67899, Unknown=0, NotChecked=0, Total=81510 [2022-04-06 04:52:24,284 INFO L913 BasicCegarLoop]: 129 mSDtfsCounter, 1308 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4683 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1089 IncrementalHoareTripleChecker+Valid, 4683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:24,284 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 206 Invalid, 5772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 4683 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 04:52:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-04-06 04:52:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 389. [2022-04-06 04:52:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 311 states have (on average 1.0128617363344052) internal successors, (315), 312 states have internal predecessors, (315), 43 states have call successors, (43), 35 states have call predecessors, (43), 34 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-06 04:52:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 400 transitions. [2022-04-06 04:52:24,291 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 400 transitions. Word has length 408 [2022-04-06 04:52:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:24,291 INFO L478 AbstractCegarLoop]: Abstraction has 389 states and 400 transitions. [2022-04-06 04:52:24,292 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-04-06 04:52:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 400 transitions. [2022-04-06 04:52:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-04-06 04:52:24,321 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:24,321 INFO L499 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:24,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:24,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:24,531 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1339227309, now seen corresponding path program 47 times [2022-04-06 04:52:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:24,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456511096] [2022-04-06 04:52:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:52:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-06 04:52:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:52:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:52:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:52:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:52:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:52:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:52:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:52:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:52:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:52:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:52:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:52:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:52:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:52:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:52:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:52:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:52:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:52:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:52:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:52:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:52:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:52:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:52:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:52:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:52:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:52:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:52:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:52:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:52:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:52:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:52:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:52:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:52:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:52:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:52:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:52:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:52:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:52:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:52:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:52:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3163 proven. 1757 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-06 04:52:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:52:26,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456511096] [2022-04-06 04:52:26,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456511096] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:52:26,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872704146] [2022-04-06 04:52:26,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:52:26,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:26,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:52:26,444 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:52:26,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-06 04:52:26,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2022-04-06 04:52:26,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:52:26,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 84 conjunts are in the unsatisfiable core [2022-04-06 04:52:26,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:52:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-06 04:52:29,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:52:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-06 04:52:30,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872704146] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:52:30,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:52:30,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 128 [2022-04-06 04:52:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832005741] [2022-04-06 04:52:30,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:52:30,267 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-04-06 04:52:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:52:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-04-06 04:52:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3617, Invalid=12639, Unknown=0, NotChecked=0, Total=16256 [2022-04-06 04:52:30,269 INFO L87 Difference]: Start difference. First operand 389 states and 400 transitions. Second operand has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-04-06 04:52:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:33,319 INFO L93 Difference]: Finished difference Result 716 states and 849 transitions. [2022-04-06 04:52:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-04-06 04:52:33,320 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 418 [2022-04-06 04:52:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:33,321 INFO L225 Difference]: With dead ends: 716 [2022-04-06 04:52:33,321 INFO L226 Difference]: Without dead ends: 555 [2022-04-06 04:52:33,324 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11995 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=9769, Invalid=34121, Unknown=0, NotChecked=0, Total=43890 [2022-04-06 04:52:33,325 INFO L913 BasicCegarLoop]: 94 mSDtfsCounter, 818 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:33,325 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 156 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 04:52:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-04-06 04:52:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 391. [2022-04-06 04:52:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 313 states have (on average 1.012779552715655) internal successors, (317), 314 states have internal predecessors, (317), 43 states have call successors, (43), 35 states have call predecessors, (43), 34 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-06 04:52:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 402 transitions. [2022-04-06 04:52:33,330 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 402 transitions. Word has length 418 [2022-04-06 04:52:33,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:33,331 INFO L478 AbstractCegarLoop]: Abstraction has 391 states and 402 transitions. [2022-04-06 04:52:33,331 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-04-06 04:52:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 402 transitions. [2022-04-06 04:52:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-04-06 04:52:33,333 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:33,333 INFO L499 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:33,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:33,547 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-04-06 04:52:33,547 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:33,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1950348592, now seen corresponding path program 48 times [2022-04-06 04:52:33,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:33,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485573070] [2022-04-06 04:52:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:33,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:52:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:52:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:52:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:52:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:52:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:52:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:52:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:52:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:52:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:52:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:52:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:52:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:52:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:52:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:52:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:52:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:52:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:52:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:52:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:52:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:52:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:52:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:52:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:52:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:52:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:52:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:52:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:52:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:52:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:52:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:52:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:52:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:52:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:52:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:52:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:52:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:52:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:52:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:52:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:52:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:52:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1720 proven. 3282 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-06 04:52:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:52:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485573070] [2022-04-06 04:52:34,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485573070] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:52:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828627378] [2022-04-06 04:52:34,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:52:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:52:34,420 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:52:34,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-06 04:52:34,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-04-06 04:52:34,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:52:34,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 85 conjunts are in the unsatisfiable core [2022-04-06 04:52:34,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:52:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-06 04:52:35,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:52:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-06 04:52:36,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828627378] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:52:36,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:52:36,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 51 [2022-04-06 04:52:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35689974] [2022-04-06 04:52:36,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:52:36,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-06 04:52:36,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:52:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-06 04:52:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=1544, Unknown=0, NotChecked=0, Total=2550 [2022-04-06 04:52:36,036 INFO L87 Difference]: Start difference. First operand 391 states and 402 transitions. Second operand has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-06 04:52:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:37,193 INFO L93 Difference]: Finished difference Result 408 states and 421 transitions. [2022-04-06 04:52:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-06 04:52:37,194 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 420 [2022-04-06 04:52:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:37,196 INFO L225 Difference]: With dead ends: 408 [2022-04-06 04:52:37,196 INFO L226 Difference]: Without dead ends: 408 [2022-04-06 04:52:37,197 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 958 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3010, Invalid=6496, Unknown=0, NotChecked=0, Total=9506 [2022-04-06 04:52:37,197 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 214 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:37,197 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 114 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 04:52:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-04-06 04:52:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2022-04-06 04:52:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 322 states have (on average 1.0124223602484472) internal successors, (326), 323 states have internal predecessors, (326), 45 states have call successors, (45), 36 states have call predecessors, (45), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-06 04:52:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 415 transitions. [2022-04-06 04:52:37,206 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 415 transitions. Word has length 420 [2022-04-06 04:52:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:37,207 INFO L478 AbstractCegarLoop]: Abstraction has 403 states and 415 transitions. [2022-04-06 04:52:37,207 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-06 04:52:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 415 transitions. [2022-04-06 04:52:37,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-04-06 04:52:37,210 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:37,210 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:37,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:37,425 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:37,425 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:37,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2013148152, now seen corresponding path program 49 times [2022-04-06 04:52:37,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:37,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519250409] [2022-04-06 04:52:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:52:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 04:52:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:52:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:52:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:52:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:52:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:52:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:52:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:52:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:52:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:52:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:52:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:52:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:52:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:52:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:52:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:52:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:52:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:52:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:52:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:52:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:52:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:52:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:52:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:52:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:52:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:52:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:52:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:52:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:52:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:52:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:52:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:52:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:52:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:52:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:52:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:52:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:52:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:52:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:52:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:52:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:52:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:52:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3489 proven. 1845 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-06 04:52:39,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:52:39,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519250409] [2022-04-06 04:52:39,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519250409] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:52:39,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138955456] [2022-04-06 04:52:39,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:52:39,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:39,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:52:39,453 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:52:39,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-06 04:52:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:39,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 86 conjunts are in the unsatisfiable core [2022-04-06 04:52:39,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:52:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3772 proven. 1722 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2022-04-06 04:52:42,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:52:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3610 proven. 1722 refuted. 0 times theorem prover too weak. 3446 trivial. 0 not checked. [2022-04-06 04:52:43,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138955456] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:52:43,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:52:43,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 86, 86] total 132 [2022-04-06 04:52:43,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452838729] [2022-04-06 04:52:43,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:52:43,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-04-06 04:52:43,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:52:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-04-06 04:52:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3833, Invalid=13459, Unknown=0, NotChecked=0, Total=17292 [2022-04-06 04:52:43,339 INFO L87 Difference]: Start difference. First operand 403 states and 415 transitions. Second operand has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) [2022-04-06 04:52:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:46,588 INFO L93 Difference]: Finished difference Result 738 states and 875 transitions. [2022-04-06 04:52:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-04-06 04:52:46,595 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) Word has length 436 [2022-04-06 04:52:46,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:46,598 INFO L225 Difference]: With dead ends: 738 [2022-04-06 04:52:46,598 INFO L226 Difference]: Without dead ends: 573 [2022-04-06 04:52:46,602 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12751 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=10282, Invalid=36158, Unknown=0, NotChecked=0, Total=46440 [2022-04-06 04:52:46,604 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 839 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:46,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 163 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 04:52:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-04-06 04:52:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 405. [2022-04-06 04:52:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 324 states have (on average 1.0123456790123457) internal successors, (328), 325 states have internal predecessors, (328), 45 states have call successors, (45), 36 states have call predecessors, (45), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-06 04:52:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 417 transitions. [2022-04-06 04:52:46,612 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 417 transitions. Word has length 436 [2022-04-06 04:52:46,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:46,612 INFO L478 AbstractCegarLoop]: Abstraction has 405 states and 417 transitions. [2022-04-06 04:52:46,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) [2022-04-06 04:52:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 417 transitions. [2022-04-06 04:52:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-04-06 04:52:46,614 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:46,615 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:46,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:46,824 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-04-06 04:52:46,824 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -498131109, now seen corresponding path program 50 times [2022-04-06 04:52:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835270818] [2022-04-06 04:52:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:52:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 04:52:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:52:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:52:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:52:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:52:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:52:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:52:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:52:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:52:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:52:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:52:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:52:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:52:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:52:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:52:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:52:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:52:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:52:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:52:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:52:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:52:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:52:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:52:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:52:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:52:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:52:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:52:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:52:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:52:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:52:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:52:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:52:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:52:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:52:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:52:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:52:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:52:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:52:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:52:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:52:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:52:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:52:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:52:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 3489 proven. 1929 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-06 04:52:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:52:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835270818] [2022-04-06 04:52:48,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835270818] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:52:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314087703] [2022-04-06 04:52:48,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:52:48,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:52:48,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:52:48,991 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:52:48,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-06 04:52:49,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:52:49,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:52:49,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 88 conjunts are in the unsatisfiable core [2022-04-06 04:52:49,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:52:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-06 04:52:51,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:52:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-06 04:52:52,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314087703] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:52:52,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:52:52,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 47, 47] total 134 [2022-04-06 04:52:52,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270969124] [2022-04-06 04:52:52,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:52:52,218 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-04-06 04:52:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:52:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-04-06 04:52:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2932, Invalid=14890, Unknown=0, NotChecked=0, Total=17822 [2022-04-06 04:52:52,220 INFO L87 Difference]: Start difference. First operand 405 states and 417 transitions. Second operand has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 04:52:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:52:58,518 INFO L93 Difference]: Finished difference Result 757 states and 897 transitions. [2022-04-06 04:52:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-04-06 04:52:58,519 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 438 [2022-04-06 04:52:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:52:58,520 INFO L225 Difference]: With dead ends: 757 [2022-04-06 04:52:58,520 INFO L226 Difference]: Without dead ends: 588 [2022-04-06 04:52:58,526 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32884 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=15663, Invalid=78279, Unknown=0, NotChecked=0, Total=93942 [2022-04-06 04:52:58,526 INFO L913 BasicCegarLoop]: 138 mSDtfsCounter, 1379 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 5989 mSolverCounterSat, 1210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 7199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1210 IncrementalHoareTripleChecker+Valid, 5989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 04:52:58,526 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 240 Invalid, 7199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1210 Valid, 5989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 04:52:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-04-06 04:52:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 415. [2022-04-06 04:52:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 332 states have (on average 1.0120481927710843) internal successors, (336), 333 states have internal predecessors, (336), 46 states have call successors, (46), 37 states have call predecessors, (46), 36 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-06 04:52:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2022-04-06 04:52:58,531 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 438 [2022-04-06 04:52:58,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:52:58,531 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2022-04-06 04:52:58,532 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 04:52:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2022-04-06 04:52:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-04-06 04:52:58,533 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:52:58,534 INFO L499 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:52:58,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-04-06 04:52:58,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-04-06 04:52:58,734 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:52:58,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:52:58,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2042736274, now seen corresponding path program 51 times [2022-04-06 04:52:58,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:52:58,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521951098] [2022-04-06 04:52:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:52:58,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:52:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:53:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-06 04:53:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:53:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:53:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:53:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:53:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:53:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:53:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:53:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:53:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:53:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:53:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:53:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:53:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:53:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:53:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:53:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:53:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:53:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:53:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:53:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:53:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:53:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:53:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:53:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:53:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:53:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:53:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:53:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:53:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:53:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:53:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:53:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:53:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:53:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:53:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:53:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:53:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:53:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:53:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:53:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:53:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:53:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:53:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-06 04:53:00,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:53:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521951098] [2022-04-06 04:53:00,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521951098] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:53:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256268670] [2022-04-06 04:53:00,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:53:00,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:53:00,808 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:53:00,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-04-06 04:53:01,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2022-04-06 04:53:01,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:53:01,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 90 conjunts are in the unsatisfiable core [2022-04-06 04:53:01,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:53:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-06 04:53:03,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:53:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-06 04:53:04,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256268670] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:53:04,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:53:04,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 48, 48] total 137 [2022-04-06 04:53:04,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786809606] [2022-04-06 04:53:04,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:53:04,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-04-06 04:53:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:53:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-04-06 04:53:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3066, Invalid=15566, Unknown=0, NotChecked=0, Total=18632 [2022-04-06 04:53:04,105 INFO L87 Difference]: Start difference. First operand 415 states and 427 transitions. Second operand has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-04-06 04:53:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:53:10,276 INFO L93 Difference]: Finished difference Result 775 states and 918 transitions. [2022-04-06 04:53:10,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-04-06 04:53:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Word has length 448 [2022-04-06 04:53:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:53:10,279 INFO L225 Difference]: With dead ends: 775 [2022-04-06 04:53:10,279 INFO L226 Difference]: Without dead ends: 602 [2022-04-06 04:53:10,286 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 983 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34441 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=16379, Invalid=81903, Unknown=0, NotChecked=0, Total=98282 [2022-04-06 04:53:10,287 INFO L913 BasicCegarLoop]: 141 mSDtfsCounter, 1272 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5376 mSolverCounterSat, 1121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 6497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 5376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:53:10,287 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 233 Invalid, 6497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1121 Valid, 5376 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 04:53:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-04-06 04:53:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 425. [2022-04-06 04:53:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 340 states have (on average 1.011764705882353) internal successors, (344), 341 states have internal predecessors, (344), 47 states have call successors, (47), 38 states have call predecessors, (47), 37 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-06 04:53:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2022-04-06 04:53:10,321 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 448 [2022-04-06 04:53:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:53:10,321 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2022-04-06 04:53:10,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-04-06 04:53:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2022-04-06 04:53:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-04-06 04:53:10,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:53:10,325 INFO L499 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:53:10,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-04-06 04:53:10,536 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:10,537 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:53:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:53:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1276827895, now seen corresponding path program 52 times [2022-04-06 04:53:10,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:53:10,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368405528] [2022-04-06 04:53:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:53:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:53:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:53:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-06 04:53:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:53:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:53:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:53:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:53:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:53:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:53:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:53:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:53:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:53:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:53:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:53:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:53:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:53:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:53:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:53:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:53:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:53:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:53:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:53:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:53:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:53:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:53:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:53:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:53:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:53:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:53:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:53:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:53:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:53:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:53:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:53:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:53:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:53:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:53:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:53:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:53:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:53:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:53:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:53:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:53:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:53:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:53:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:53:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-06 04:53:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:53:12,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368405528] [2022-04-06 04:53:12,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368405528] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:53:12,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86852654] [2022-04-06 04:53:12,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:53:12,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:12,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:53:12,704 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:53:12,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-04-06 04:53:12,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:53:12,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:53:12,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 92 conjunts are in the unsatisfiable core [2022-04-06 04:53:12,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:53:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-06 04:53:15,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:53:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-06 04:53:15,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86852654] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:53:15,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:53:15,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 49, 49] total 140 [2022-04-06 04:53:15,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590551117] [2022-04-06 04:53:15,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:53:16,004 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-04-06 04:53:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:53:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-04-06 04:53:16,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3203, Invalid=16257, Unknown=0, NotChecked=0, Total=19460 [2022-04-06 04:53:16,008 INFO L87 Difference]: Start difference. First operand 425 states and 437 transitions. Second operand has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-04-06 04:53:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:53:22,404 INFO L93 Difference]: Finished difference Result 793 states and 939 transitions. [2022-04-06 04:53:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-04-06 04:53:22,405 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Word has length 458 [2022-04-06 04:53:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:53:22,406 INFO L225 Difference]: With dead ends: 793 [2022-04-06 04:53:22,406 INFO L226 Difference]: Without dead ends: 616 [2022-04-06 04:53:22,411 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36034 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=17111, Invalid=85609, Unknown=0, NotChecked=0, Total=102720 [2022-04-06 04:53:22,411 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 1465 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5611 mSolverCounterSat, 1231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 6842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1231 IncrementalHoareTripleChecker+Valid, 5611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:53:22,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 236 Invalid, 6842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1231 Valid, 5611 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-06 04:53:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-04-06 04:53:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 435. [2022-04-06 04:53:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 348 states have (on average 1.0114942528735633) internal successors, (352), 349 states have internal predecessors, (352), 48 states have call successors, (48), 39 states have call predecessors, (48), 38 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-06 04:53:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 447 transitions. [2022-04-06 04:53:22,416 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 447 transitions. Word has length 458 [2022-04-06 04:53:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:53:22,416 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 447 transitions. [2022-04-06 04:53:22,416 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-04-06 04:53:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 447 transitions. [2022-04-06 04:53:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-04-06 04:53:22,419 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:53:22,419 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:53:22,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-04-06 04:53:22,628 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-04-06 04:53:22,628 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:53:22,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:53:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash -197855040, now seen corresponding path program 53 times [2022-04-06 04:53:22,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:53:22,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488559918] [2022-04-06 04:53:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:53:22,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:53:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:53:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-06 04:53:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:53:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:53:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:53:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:53:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:53:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:53:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:53:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:53:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:53:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:53:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:53:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:53:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:53:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:53:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:53:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:53:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:53:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:53:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:53:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:53:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:53:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:53:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:53:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:53:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:53:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:53:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:53:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:53:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:53:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:53:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:53:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:53:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:53:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:53:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:53:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:53:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:53:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:53:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:53:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:53:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:53:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:53:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:53:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:53:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-06 04:53:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:53:24,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488559918] [2022-04-06 04:53:24,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488559918] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:53:24,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35734273] [2022-04-06 04:53:24,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:53:24,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:53:24,866 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:53:24,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-04-06 04:53:25,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-04-06 04:53:25,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:53:25,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 94 conjunts are in the unsatisfiable core [2022-04-06 04:53:25,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:53:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-06 04:53:28,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:53:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-06 04:53:29,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35734273] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:53:29,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:53:29,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94, 94] total 143 [2022-04-06 04:53:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437941955] [2022-04-06 04:53:29,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:53:29,120 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-04-06 04:53:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:53:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-04-06 04:53:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4517, Invalid=15789, Unknown=0, NotChecked=0, Total=20306 [2022-04-06 04:53:29,123 INFO L87 Difference]: Start difference. First operand 435 states and 447 transitions. Second operand has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-04-06 04:53:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:53:32,667 INFO L93 Difference]: Finished difference Result 802 states and 951 transitions. [2022-04-06 04:53:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-04-06 04:53:32,667 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 468 [2022-04-06 04:53:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:53:32,672 INFO L225 Difference]: With dead ends: 802 [2022-04-06 04:53:32,672 INFO L226 Difference]: Without dead ends: 621 [2022-04-06 04:53:32,677 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1259 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15070 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=12224, Invalid=42766, Unknown=0, NotChecked=0, Total=54990 [2022-04-06 04:53:32,677 INFO L913 BasicCegarLoop]: 104 mSDtfsCounter, 1123 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:53:32,677 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 146 Invalid, 3474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 04:53:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-04-06 04:53:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 437. [2022-04-06 04:53:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 350 states have (on average 1.0114285714285713) internal successors, (354), 351 states have internal predecessors, (354), 48 states have call successors, (48), 39 states have call predecessors, (48), 38 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-06 04:53:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 449 transitions. [2022-04-06 04:53:32,683 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 449 transitions. Word has length 468 [2022-04-06 04:53:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:53:32,683 INFO L478 AbstractCegarLoop]: Abstraction has 437 states and 449 transitions. [2022-04-06 04:53:32,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-04-06 04:53:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 449 transitions. [2022-04-06 04:53:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-04-06 04:53:32,686 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:53:32,686 INFO L499 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:53:32,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-04-06 04:53:32,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-04-06 04:53:32,899 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:53:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:53:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash -762865629, now seen corresponding path program 54 times [2022-04-06 04:53:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:53:32,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160553065] [2022-04-06 04:53:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:53:32,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:53:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:53:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:53:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:53:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:53:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:53:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:53:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:53:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:53:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:53:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:53:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:53:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:53:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:53:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:53:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:53:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:53:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:53:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:53:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:53:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:53:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:53:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:53:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:53:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:53:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:53:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:53:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:53:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:53:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:53:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:53:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:53:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:53:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:53:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:53:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:53:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:53:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:53:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:53:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:53:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:53:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:53:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:53:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:53:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:53:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:53:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:53:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-06 04:53:33,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:53:33,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160553065] [2022-04-06 04:53:33,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160553065] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:53:33,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226026661] [2022-04-06 04:53:33,901 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:53:33,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:33,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:53:33,903 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:53:33,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-04-06 04:53:34,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2022-04-06 04:53:34,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:53:34,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 95 conjunts are in the unsatisfiable core [2022-04-06 04:53:34,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:53:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-06 04:53:34,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:53:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-06 04:53:35,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226026661] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:53:35,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:53:35,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 56 [2022-04-06 04:53:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636936116] [2022-04-06 04:53:35,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:53:35,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-04-06 04:53:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:53:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-04-06 04:53:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=1839, Unknown=0, NotChecked=0, Total=3080 [2022-04-06 04:53:35,489 INFO L87 Difference]: Start difference. First operand 437 states and 449 transitions. Second operand has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-06 04:53:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:53:36,788 INFO L93 Difference]: Finished difference Result 454 states and 468 transitions. [2022-04-06 04:53:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-06 04:53:36,789 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 470 [2022-04-06 04:53:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:53:36,790 INFO L225 Difference]: With dead ends: 454 [2022-04-06 04:53:36,790 INFO L226 Difference]: Without dead ends: 454 [2022-04-06 04:53:36,792 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3715, Invalid=7841, Unknown=0, NotChecked=0, Total=11556 [2022-04-06 04:53:36,792 INFO L913 BasicCegarLoop]: 67 mSDtfsCounter, 240 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:53:36,792 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 104 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 04:53:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-04-06 04:53:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 449. [2022-04-06 04:53:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 359 states have (on average 1.011142061281337) internal successors, (363), 360 states have internal predecessors, (363), 50 states have call successors, (50), 40 states have call predecessors, (50), 39 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-06 04:53:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 462 transitions. [2022-04-06 04:53:36,797 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 462 transitions. Word has length 470 [2022-04-06 04:53:36,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:53:36,798 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 462 transitions. [2022-04-06 04:53:36,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-06 04:53:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 462 transitions. [2022-04-06 04:53:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-04-06 04:53:36,801 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:53:36,801 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:53:36,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-04-06 04:53:37,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:37,023 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:53:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:53:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash 119454539, now seen corresponding path program 55 times [2022-04-06 04:53:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:53:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611276502] [2022-04-06 04:53:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:53:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:53:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:53:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 04:53:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:53:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:53:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:53:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:53:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:53:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:53:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:53:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:53:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:53:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:53:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:53:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:53:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:53:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:53:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:53:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:53:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:53:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:53:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:53:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:53:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:53:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:53:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:53:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:53:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:53:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:53:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:53:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:53:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:53:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:53:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:53:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:53:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:53:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:53:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:53:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:53:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:53:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:53:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:53:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:53:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:53:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:53:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:53:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:53:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:53:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:53:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-06 04:53:39,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:53:39,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611276502] [2022-04-06 04:53:39,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611276502] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:53:39,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928567447] [2022-04-06 04:53:39,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:53:39,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:39,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:53:39,540 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:53:39,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-04-06 04:53:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:39,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 96 conjunts are in the unsatisfiable core [2022-04-06 04:53:39,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:53:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2022-04-06 04:53:43,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:53:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2022-04-06 04:53:44,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928567447] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:53:44,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:53:44,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 96, 96] total 147 [2022-04-06 04:53:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829192658] [2022-04-06 04:53:44,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:53:44,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-04-06 04:53:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:53:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-04-06 04:53:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4758, Invalid=16704, Unknown=0, NotChecked=0, Total=21462 [2022-04-06 04:53:44,059 INFO L87 Difference]: Start difference. First operand 449 states and 462 transitions. Second operand has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2022-04-06 04:53:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:53:47,938 INFO L93 Difference]: Finished difference Result 824 states and 977 transitions. [2022-04-06 04:53:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-04-06 04:53:47,939 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) Word has length 486 [2022-04-06 04:53:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:53:47,940 INFO L225 Difference]: With dead ends: 824 [2022-04-06 04:53:47,940 INFO L226 Difference]: Without dead ends: 639 [2022-04-06 04:53:47,942 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1066 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15916 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=12797, Invalid=45043, Unknown=0, NotChecked=0, Total=57840 [2022-04-06 04:53:47,943 INFO L913 BasicCegarLoop]: 106 mSDtfsCounter, 1088 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3219 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 3219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 04:53:47,943 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1089 Valid, 163 Invalid, 3899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 3219 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 04:53:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-04-06 04:53:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 451. [2022-04-06 04:53:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 361 states have (on average 1.0110803324099722) internal successors, (365), 362 states have internal predecessors, (365), 50 states have call successors, (50), 40 states have call predecessors, (50), 39 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-06 04:53:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 464 transitions. [2022-04-06 04:53:47,951 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 464 transitions. Word has length 486 [2022-04-06 04:53:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:53:47,951 INFO L478 AbstractCegarLoop]: Abstraction has 451 states and 464 transitions. [2022-04-06 04:53:47,951 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2022-04-06 04:53:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 464 transitions. [2022-04-06 04:53:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-04-06 04:53:47,954 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:53:47,954 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:53:47,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-04-06 04:53:48,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:48,159 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:53:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:53:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash 277571566, now seen corresponding path program 56 times [2022-04-06 04:53:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:53:48,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988411902] [2022-04-06 04:53:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:53:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:53:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:53:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-06 04:53:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:53:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:53:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:53:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:53:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:53:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:53:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:53:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:53:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:53:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:53:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:53:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:53:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:53:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:53:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:53:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:53:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:53:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:53:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:53:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:53:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:53:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:53:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:53:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:53:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:53:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:53:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:53:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:53:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:53:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:53:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:53:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:53:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:53:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:53:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:53:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:53:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:53:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:53:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:53:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:53:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:53:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 04:53:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 04:53:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 04:53:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 04:53:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 04:53:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:53:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-06 04:53:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:53:50,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988411902] [2022-04-06 04:53:50,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988411902] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:53:50,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857890441] [2022-04-06 04:53:50,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:53:50,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:53:50,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:53:50,598 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:53:50,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-04-06 04:53:50,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:53:50,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:53:50,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 98 conjunts are in the unsatisfiable core [2022-04-06 04:53:50,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:53:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-06 04:53:53,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:53:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-06 04:53:54,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857890441] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:53:54,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:53:54,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 52, 52] total 149 [2022-04-06 04:53:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603114711] [2022-04-06 04:53:54,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:53:54,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-04-06 04:53:54,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:53:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-04-06 04:53:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3632, Invalid=18420, Unknown=0, NotChecked=0, Total=22052 [2022-04-06 04:53:54,301 INFO L87 Difference]: Start difference. First operand 451 states and 464 transitions. Second operand has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-04-06 04:54:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:54:01,581 INFO L93 Difference]: Finished difference Result 843 states and 999 transitions. [2022-04-06 04:54:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-04-06 04:54:01,581 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Word has length 488 [2022-04-06 04:54:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:54:01,583 INFO L225 Difference]: With dead ends: 843 [2022-04-06 04:54:01,583 INFO L226 Difference]: Without dead ends: 654 [2022-04-06 04:54:01,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1071 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41029 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=19403, Invalid=97219, Unknown=0, NotChecked=0, Total=116622 [2022-04-06 04:54:01,592 INFO L913 BasicCegarLoop]: 153 mSDtfsCounter, 1380 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6349 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 7421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 6349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:54:01,592 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 240 Invalid, 7421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1072 Valid, 6349 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-06 04:54:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-04-06 04:54:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 461. [2022-04-06 04:54:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 369 states have (on average 1.010840108401084) internal successors, (373), 370 states have internal predecessors, (373), 51 states have call successors, (51), 41 states have call predecessors, (51), 40 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-06 04:54:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 474 transitions. [2022-04-06 04:54:01,598 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 474 transitions. Word has length 488 [2022-04-06 04:54:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:54:01,598 INFO L478 AbstractCegarLoop]: Abstraction has 461 states and 474 transitions. [2022-04-06 04:54:01,599 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-04-06 04:54:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 474 transitions. [2022-04-06 04:54:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-04-06 04:54:01,601 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:54:01,601 INFO L499 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:54:01,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-04-06 04:54:01,801 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:01,802 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:54:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:54:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1808590181, now seen corresponding path program 57 times [2022-04-06 04:54:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:54:01,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381845111] [2022-04-06 04:54:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:54:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:54:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:54:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-06 04:54:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:54:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:54:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:54:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:54:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:54:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:54:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:54:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:54:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:54:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:54:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:54:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:54:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:54:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:54:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:54:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:54:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:54:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:54:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:54:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:54:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:54:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:54:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:54:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:54:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:54:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:54:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:54:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:54:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:54:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:54:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:54:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:54:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:54:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:54:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:54:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:54:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:54:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:54:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:54:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:54:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:54:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:54:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-06 04:54:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-06 04:54:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-06 04:54:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-06 04:54:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-06 04:54:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-06 04:54:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:54:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381845111] [2022-04-06 04:54:04,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381845111] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:54:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912304455] [2022-04-06 04:54:04,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:54:04,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:54:04,407 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:54:04,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-04-06 04:54:04,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2022-04-06 04:54:04,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:54:04,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 100 conjunts are in the unsatisfiable core [2022-04-06 04:54:04,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:54:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-06 04:54:07,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:54:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-06 04:54:08,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912304455] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:54:08,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:54:08,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 53, 53] total 152 [2022-04-06 04:54:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438138756] [2022-04-06 04:54:08,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:54:08,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-04-06 04:54:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:54:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-04-06 04:54:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=19171, Unknown=0, NotChecked=0, Total=22952 [2022-04-06 04:54:08,415 INFO L87 Difference]: Start difference. First operand 461 states and 474 transitions. Second operand has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-04-06 04:54:15,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:54:15,675 INFO L93 Difference]: Finished difference Result 861 states and 1020 transitions. [2022-04-06 04:54:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-04-06 04:54:15,676 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Word has length 498 [2022-04-06 04:54:15,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:54:15,678 INFO L225 Difference]: With dead ends: 861 [2022-04-06 04:54:15,678 INFO L226 Difference]: Without dead ends: 668 [2022-04-06 04:54:15,686 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1093 SyntacticMatches, 1 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42766 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=20199, Invalid=101253, Unknown=0, NotChecked=0, Total=121452 [2022-04-06 04:54:15,687 INFO L913 BasicCegarLoop]: 156 mSDtfsCounter, 1701 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5503 mSolverCounterSat, 1337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 6840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 5503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 04:54:15,687 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 223 Invalid, 6840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1337 Valid, 5503 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 04:54:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-04-06 04:54:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 471. [2022-04-06 04:54:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 377 states have (on average 1.0106100795755968) internal successors, (381), 378 states have internal predecessors, (381), 52 states have call successors, (52), 42 states have call predecessors, (52), 41 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-06 04:54:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 484 transitions. [2022-04-06 04:54:15,693 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 484 transitions. Word has length 498 [2022-04-06 04:54:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:54:15,693 INFO L478 AbstractCegarLoop]: Abstraction has 471 states and 484 transitions. [2022-04-06 04:54:15,693 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-04-06 04:54:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 484 transitions. [2022-04-06 04:54:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-04-06 04:54:15,696 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:54:15,696 INFO L499 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:54:15,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-04-06 04:54:15,897 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-04-06 04:54:15,897 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:54:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:54:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1984922596, now seen corresponding path program 58 times [2022-04-06 04:54:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:54:15,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768483605] [2022-04-06 04:54:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:54:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:54:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:54:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-06 04:54:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:54:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:54:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:54:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:54:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:54:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:54:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:54:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:54:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:54:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:54:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:54:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:54:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:54:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:54:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:54:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:54:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:54:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:54:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:54:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:54:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:54:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:54:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:54:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:54:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:54:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:54:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:54:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:54:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:54:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:54:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:54:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:54:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:54:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:54:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:54:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:54:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:54:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:54:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:54:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:54:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:54:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:54:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:54:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-06 04:54:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-06 04:54:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-06 04:54:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-06 04:54:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-06 04:54:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4756 proven. 2594 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-06 04:54:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:54:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768483605] [2022-04-06 04:54:18,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768483605] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:54:18,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880716665] [2022-04-06 04:54:18,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:54:18,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:54:18,601 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:54:18,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-04-06 04:54:18,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:54:18,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:54:18,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 102 conjunts are in the unsatisfiable core [2022-04-06 04:54:18,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:54:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-06 04:54:21,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:54:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-06 04:54:22,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880716665] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:54:22,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:54:22,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 54, 54] total 155 [2022-04-06 04:54:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886033531] [2022-04-06 04:54:22,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:54:22,681 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-04-06 04:54:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:54:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-04-06 04:54:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3933, Invalid=19937, Unknown=0, NotChecked=0, Total=23870 [2022-04-06 04:54:22,683 INFO L87 Difference]: Start difference. First operand 471 states and 484 transitions. Second operand has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-04-06 04:54:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:54:30,544 INFO L93 Difference]: Finished difference Result 879 states and 1041 transitions. [2022-04-06 04:54:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2022-04-06 04:54:30,545 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Word has length 508 [2022-04-06 04:54:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:54:30,547 INFO L225 Difference]: With dead ends: 879 [2022-04-06 04:54:30,547 INFO L226 Difference]: Without dead ends: 682 [2022-04-06 04:54:30,553 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1115 SyntacticMatches, 1 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44539 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=21011, Invalid=105369, Unknown=0, NotChecked=0, Total=126380 [2022-04-06 04:54:30,553 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 1672 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6682 mSolverCounterSat, 1392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 8074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1392 IncrementalHoareTripleChecker+Valid, 6682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:54:30,554 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 246 Invalid, 8074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1392 Valid, 6682 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-06 04:54:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-04-06 04:54:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 481. [2022-04-06 04:54:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 386 states have internal predecessors, (389), 53 states have call successors, (53), 43 states have call predecessors, (53), 42 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-06 04:54:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 494 transitions. [2022-04-06 04:54:30,561 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 494 transitions. Word has length 508 [2022-04-06 04:54:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:54:30,561 INFO L478 AbstractCegarLoop]: Abstraction has 481 states and 494 transitions. [2022-04-06 04:54:30,561 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-04-06 04:54:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 494 transitions. [2022-04-06 04:54:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-04-06 04:54:30,564 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:54:30,564 INFO L499 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:54:30,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-04-06 04:54:30,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-04-06 04:54:30,784 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:54:30,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:54:30,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1074422765, now seen corresponding path program 59 times [2022-04-06 04:54:30,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:54:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537905506] [2022-04-06 04:54:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:54:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:54:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:54:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-06 04:54:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:54:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:54:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:54:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:54:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:54:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:54:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:54:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:54:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:54:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:54:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:54:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:54:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:54:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:54:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:54:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:54:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:54:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:54:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:54:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:54:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:54:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:54:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:54:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:54:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:54:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:54:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:54:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:54:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:54:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:54:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:54:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:54:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:54:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:54:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:54:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:54:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:54:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:54:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:54:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:54:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:54:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:54:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:54:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:54:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:54:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-06 04:54:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-06 04:54:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-06 04:54:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-06 04:54:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 4953 proven. 2697 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-06 04:54:33,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:54:33,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537905506] [2022-04-06 04:54:33,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537905506] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:54:33,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475690573] [2022-04-06 04:54:33,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:54:33,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:33,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:54:33,530 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:54:33,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-04-06 04:54:33,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2022-04-06 04:54:33,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:54:33,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 104 conjunts are in the unsatisfiable core [2022-04-06 04:54:33,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:54:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-06 04:54:37,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:54:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-06 04:54:38,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475690573] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:54:38,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:54:38,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 158 [2022-04-06 04:54:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619313295] [2022-04-06 04:54:38,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:54:38,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-04-06 04:54:38,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:54:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-04-06 04:54:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5517, Invalid=19289, Unknown=0, NotChecked=0, Total=24806 [2022-04-06 04:54:38,638 INFO L87 Difference]: Start difference. First operand 481 states and 494 transitions. Second operand has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-04-06 04:54:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:54:43,176 INFO L93 Difference]: Finished difference Result 888 states and 1053 transitions. [2022-04-06 04:54:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-04-06 04:54:43,176 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Word has length 518 [2022-04-06 04:54:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:54:43,179 INFO L225 Difference]: With dead ends: 888 [2022-04-06 04:54:43,179 INFO L226 Difference]: Without dead ends: 687 [2022-04-06 04:54:43,182 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1136 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18495 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=14954, Invalid=52386, Unknown=0, NotChecked=0, Total=67340 [2022-04-06 04:54:43,182 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 1042 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 4529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 04:54:43,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 191 Invalid, 4529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 04:54:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-04-06 04:54:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 483. [2022-04-06 04:54:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 387 states have (on average 1.0103359173126616) internal successors, (391), 388 states have internal predecessors, (391), 53 states have call successors, (53), 43 states have call predecessors, (53), 42 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-06 04:54:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 496 transitions. [2022-04-06 04:54:43,187 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 496 transitions. Word has length 518 [2022-04-06 04:54:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:54:43,188 INFO L478 AbstractCegarLoop]: Abstraction has 483 states and 496 transitions. [2022-04-06 04:54:43,188 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-04-06 04:54:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 496 transitions. [2022-04-06 04:54:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-04-06 04:54:43,190 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:54:43,190 INFO L499 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:54:43,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-04-06 04:54:43,390 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-04-06 04:54:43,391 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:54:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:54:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 739179702, now seen corresponding path program 60 times [2022-04-06 04:54:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:54:43,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775476498] [2022-04-06 04:54:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:54:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:54:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:54:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:54:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:54:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:54:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:54:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:54:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:54:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:54:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:54:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:54:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:54:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:54:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:54:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:54:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:54:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:54:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:54:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:54:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:54:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:54:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:54:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:54:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:54:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:54:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:54:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:54:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:54:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:54:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:54:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:54:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:54:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:54:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:54:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:54:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:54:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:54:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:54:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:54:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:54:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:54:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:54:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:54:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 04:54:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 04:54:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 04:54:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 04:54:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 04:54:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-06 04:54:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-06 04:54:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-06 04:54:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-06 04:54:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2650 proven. 5102 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-06 04:54:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:54:44,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775476498] [2022-04-06 04:54:44,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775476498] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:54:44,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567207697] [2022-04-06 04:54:44,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:54:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:54:44,593 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:54:44,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-04-06 04:54:44,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-04-06 04:54:44,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:54:44,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 105 conjunts are in the unsatisfiable core [2022-04-06 04:54:44,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:54:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-06 04:54:45,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:54:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-06 04:54:46,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567207697] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:54:46,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:54:46,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 61 [2022-04-06 04:54:46,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19952077] [2022-04-06 04:54:46,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:54:46,502 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-06 04:54:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:54:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-06 04:54:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=2159, Unknown=0, NotChecked=0, Total=3660 [2022-04-06 04:54:46,504 INFO L87 Difference]: Start difference. First operand 483 states and 496 transitions. Second operand has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-06 04:54:48,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:54:48,073 INFO L93 Difference]: Finished difference Result 500 states and 515 transitions. [2022-04-06 04:54:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-06 04:54:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 520 [2022-04-06 04:54:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:54:48,075 INFO L225 Difference]: With dead ends: 500 [2022-04-06 04:54:48,075 INFO L226 Difference]: Without dead ends: 500 [2022-04-06 04:54:48,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1188 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2562 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4495, Invalid=9311, Unknown=0, NotChecked=0, Total=13806 [2022-04-06 04:54:48,077 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 250 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:54:48,077 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 99 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 04:54:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-04-06 04:54:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 495. [2022-04-06 04:54:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 396 states have (on average 1.0101010101010102) internal successors, (400), 397 states have internal predecessors, (400), 55 states have call successors, (55), 44 states have call predecessors, (55), 43 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-06 04:54:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 509 transitions. [2022-04-06 04:54:48,083 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 509 transitions. Word has length 520 [2022-04-06 04:54:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:54:48,084 INFO L478 AbstractCegarLoop]: Abstraction has 495 states and 509 transitions. [2022-04-06 04:54:48,084 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-06 04:54:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 509 transitions. [2022-04-06 04:54:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-04-06 04:54:48,087 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:54:48,087 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:54:48,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-04-06 04:54:48,311 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:48,312 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:54:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:54:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash 518560222, now seen corresponding path program 61 times [2022-04-06 04:54:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:54:48,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010822838] [2022-04-06 04:54:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:54:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:54:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:54:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-06 04:54:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:54:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:54:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:54:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:54:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:54:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:54:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:54:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:54:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:54:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:54:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:54:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:54:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:54:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:54:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:54:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:54:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:54:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:54:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:54:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:54:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:54:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:54:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:54:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:54:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:54:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:54:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:54:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:54:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:54:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:54:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:54:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:54:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:54:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:54:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:54:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:54:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:54:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:54:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:54:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:54:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 04:54:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 04:54:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 04:54:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 04:54:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 04:54:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-06 04:54:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-06 04:54:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-06 04:54:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-06 04:54:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-06 04:54:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-06 04:54:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5359 proven. 2805 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-06 04:54:51,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:54:51,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010822838] [2022-04-06 04:54:51,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010822838] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:54:51,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021335834] [2022-04-06 04:54:51,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:54:51,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:54:51,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:54:51,271 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:54:51,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-04-06 04:54:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:54:51,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 106 conjunts are in the unsatisfiable core [2022-04-06 04:54:51,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:54:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5712 proven. 2652 refuted. 0 times theorem prover too weak. 5104 trivial. 0 not checked. [2022-04-06 04:54:55,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:54:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5510 proven. 2652 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-04-06 04:54:56,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021335834] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:54:56,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:54:56,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 106, 106] total 162 [2022-04-06 04:54:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30148463] [2022-04-06 04:54:56,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:54:56,445 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-04-06 04:54:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:54:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-04-06 04:54:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5783, Invalid=20299, Unknown=0, NotChecked=0, Total=26082 [2022-04-06 04:54:56,449 INFO L87 Difference]: Start difference. First operand 495 states and 509 transitions. Second operand has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2022-04-06 04:55:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:55:01,014 INFO L93 Difference]: Finished difference Result 910 states and 1079 transitions. [2022-04-06 04:55:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-04-06 04:55:01,015 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) Word has length 536 [2022-04-06 04:55:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:55:01,017 INFO L225 Difference]: With dead ends: 910 [2022-04-06 04:55:01,017 INFO L226 Difference]: Without dead ends: 705 [2022-04-06 04:55:01,020 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1440 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19431 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=15587, Invalid=54903, Unknown=0, NotChecked=0, Total=70490 [2022-04-06 04:55:01,020 INFO L913 BasicCegarLoop]: 116 mSDtfsCounter, 983 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 04:55:01,020 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 188 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 04:55:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-06 04:55:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 497. [2022-04-06 04:55:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 398 states have (on average 1.0100502512562815) internal successors, (402), 399 states have internal predecessors, (402), 55 states have call successors, (55), 44 states have call predecessors, (55), 43 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-06 04:55:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 511 transitions. [2022-04-06 04:55:01,027 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 511 transitions. Word has length 536 [2022-04-06 04:55:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:55:01,028 INFO L478 AbstractCegarLoop]: Abstraction has 497 states and 511 transitions. [2022-04-06 04:55:01,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2022-04-06 04:55:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 511 transitions. [2022-04-06 04:55:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-04-06 04:55:01,031 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:55:01,031 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:55:01,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-04-06 04:55:01,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:55:01,236 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:55:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:55:01,236 INFO L85 PathProgramCache]: Analyzing trace with hash -286902335, now seen corresponding path program 62 times [2022-04-06 04:55:01,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:55:01,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654544506] [2022-04-06 04:55:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:55:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:55:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:55:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-06 04:55:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:55:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:55:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:55:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:55:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:55:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:55:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:55:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:55:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:55:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:55:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:55:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:55:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:55:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:55:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:55:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:55:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:55:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:55:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:55:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:55:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:55:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:55:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:55:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:55:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:55:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:55:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:55:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:55:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:55:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:55:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:55:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:55:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:55:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:55:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:55:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:55:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:55:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:55:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:55:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:55:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:55:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-06 04:55:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-06 04:55:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-06 04:55:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-06 04:55:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-06 04:55:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-06 04:55:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-06 04:55:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-06 04:55:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-06 04:55:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-06 04:55:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 5359 proven. 2909 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-06 04:55:04,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:55:04,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654544506] [2022-04-06 04:55:04,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654544506] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:55:04,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628666734] [2022-04-06 04:55:04,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:55:04,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:55:04,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:55:04,191 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:55:04,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-04-06 04:55:04,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:55:04,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:55:04,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 108 conjunts are in the unsatisfiable core [2022-04-06 04:55:04,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:55:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-06 04:55:07,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:55:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-06 04:55:08,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628666734] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:55:08,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:55:08,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 57, 57] total 164 [2022-04-06 04:55:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239447275] [2022-04-06 04:55:08,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:55:08,613 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-04-06 04:55:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:55:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-04-06 04:55:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4407, Invalid=22325, Unknown=0, NotChecked=0, Total=26732 [2022-04-06 04:55:08,615 INFO L87 Difference]: Start difference. First operand 497 states and 511 transitions. Second operand has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2022-04-06 04:55:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:55:17,493 INFO L93 Difference]: Finished difference Result 929 states and 1101 transitions. [2022-04-06 04:55:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2022-04-06 04:55:17,493 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Word has length 538 [2022-04-06 04:55:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:55:17,495 INFO L225 Difference]: With dead ends: 929 [2022-04-06 04:55:17,495 INFO L226 Difference]: Without dead ends: 720 [2022-04-06 04:55:17,500 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50074 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=23543, Invalid=118209, Unknown=0, NotChecked=0, Total=141752 [2022-04-06 04:55:17,500 INFO L913 BasicCegarLoop]: 168 mSDtfsCounter, 1553 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 8147 mSolverCounterSat, 1421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 9568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1421 IncrementalHoareTripleChecker+Valid, 8147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:55:17,500 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 270 Invalid, 9568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1421 Valid, 8147 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-06 04:55:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-04-06 04:55:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 507. [2022-04-06 04:55:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 406 states have (on average 1.0098522167487685) internal successors, (410), 407 states have internal predecessors, (410), 56 states have call successors, (56), 45 states have call predecessors, (56), 44 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-06 04:55:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 521 transitions. [2022-04-06 04:55:17,506 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 521 transitions. Word has length 538 [2022-04-06 04:55:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:55:17,506 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 521 transitions. [2022-04-06 04:55:17,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2022-04-06 04:55:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 521 transitions. [2022-04-06 04:55:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-04-06 04:55:17,509 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:55:17,510 INFO L499 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:55:17,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-04-06 04:55:17,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-04-06 04:55:17,723 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:55:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:55:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 844403576, now seen corresponding path program 63 times [2022-04-06 04:55:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:55:17,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885401599] [2022-04-06 04:55:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:55:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:55:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:55:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-06 04:55:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:55:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:55:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:55:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:55:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:55:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:55:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:55:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:55:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:55:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:55:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:55:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:55:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:55:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:55:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:55:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:55:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:55:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:55:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:55:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:55:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:55:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:55:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:55:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:55:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:55:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:55:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:55:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:55:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:55:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:55:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:55:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:55:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:55:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:55:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:55:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:55:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:55:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:55:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:55:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:55:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:55:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:55:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-06 04:55:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-06 04:55:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-06 04:55:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-06 04:55:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-06 04:55:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-06 04:55:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-06 04:55:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-06 04:55:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-06 04:55:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-06 04:55:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5568 proven. 3018 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-06 04:55:20,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:55:20,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885401599] [2022-04-06 04:55:20,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885401599] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:55:20,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147227785] [2022-04-06 04:55:20,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:55:20,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:55:20,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:55:20,804 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:55:20,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-04-06 04:55:21,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-04-06 04:55:21,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:55:21,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 110 conjunts are in the unsatisfiable core [2022-04-06 04:55:21,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:55:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-06 04:55:24,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:55:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-06 04:55:25,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147227785] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:55:25,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:55:25,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 58, 58] total 167 [2022-04-06 04:55:25,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024360881] [2022-04-06 04:55:25,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:55:25,504 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-04-06 04:55:25,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:55:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-04-06 04:55:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4571, Invalid=23151, Unknown=0, NotChecked=0, Total=27722 [2022-04-06 04:55:25,506 INFO L87 Difference]: Start difference. First operand 507 states and 521 transitions. Second operand has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2022-04-06 04:55:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:55:34,301 INFO L93 Difference]: Finished difference Result 947 states and 1122 transitions. [2022-04-06 04:55:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-04-06 04:55:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) Word has length 548 [2022-04-06 04:55:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:55:34,304 INFO L225 Difference]: With dead ends: 947 [2022-04-06 04:55:34,304 INFO L226 Difference]: Without dead ends: 734 [2022-04-06 04:55:34,309 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1203 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51991 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=24419, Invalid=122653, Unknown=0, NotChecked=0, Total=147072 [2022-04-06 04:55:34,310 INFO L913 BasicCegarLoop]: 171 mSDtfsCounter, 1912 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6627 mSolverCounterSat, 1776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 8403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1776 IncrementalHoareTripleChecker+Valid, 6627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:55:34,310 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 258 Invalid, 8403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1776 Valid, 6627 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-04-06 04:55:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-04-06 04:55:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 517. [2022-04-06 04:55:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 414 states have (on average 1.0096618357487923) internal successors, (418), 415 states have internal predecessors, (418), 57 states have call successors, (57), 46 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-06 04:55:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 531 transitions. [2022-04-06 04:55:34,317 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 531 transitions. Word has length 548 [2022-04-06 04:55:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:55:34,317 INFO L478 AbstractCegarLoop]: Abstraction has 517 states and 531 transitions. [2022-04-06 04:55:34,318 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2022-04-06 04:55:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 531 transitions. [2022-04-06 04:55:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-04-06 04:55:34,321 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:55:34,321 INFO L499 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:55:34,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-04-06 04:55:34,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-04-06 04:55:34,535 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:55:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:55:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1638545519, now seen corresponding path program 64 times [2022-04-06 04:55:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:55:34,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283100747] [2022-04-06 04:55:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:55:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:55:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:55:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-06 04:55:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:55:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:55:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:55:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:55:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:55:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:55:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:55:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:55:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:55:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:55:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:55:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:55:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:55:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:55:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:55:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:55:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:55:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:55:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:55:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:55:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:55:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:55:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:55:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:55:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:55:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:55:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:55:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:55:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:55:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:55:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:55:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:55:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:55:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:55:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:55:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:55:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:55:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:55:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:55:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:55:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:55:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:55:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:55:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:55:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-06 04:55:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-06 04:55:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-06 04:55:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-06 04:55:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-06 04:55:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-06 04:55:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-06 04:55:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-06 04:55:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-06 04:55:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 5781 proven. 3129 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-06 04:55:37,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:55:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283100747] [2022-04-06 04:55:37,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283100747] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:55:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508551012] [2022-04-06 04:55:37,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:55:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:55:37,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:55:37,779 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:55:37,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-04-06 04:55:37,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:55:37,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:55:38,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 112 conjunts are in the unsatisfiable core [2022-04-06 04:55:38,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:55:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-06 04:55:41,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:55:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-06 04:55:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508551012] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:55:42,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:55:42,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 59, 59] total 170 [2022-04-06 04:55:42,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657227937] [2022-04-06 04:55:42,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:55:42,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-04-06 04:55:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:55:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-04-06 04:55:42,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4738, Invalid=23992, Unknown=0, NotChecked=0, Total=28730 [2022-04-06 04:55:42,568 INFO L87 Difference]: Start difference. First operand 517 states and 531 transitions. Second operand has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-04-06 04:55:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:55:51,555 INFO L93 Difference]: Finished difference Result 965 states and 1143 transitions. [2022-04-06 04:55:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-04-06 04:55:51,555 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Word has length 558 [2022-04-06 04:55:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:55:51,558 INFO L225 Difference]: With dead ends: 965 [2022-04-06 04:55:51,558 INFO L226 Difference]: Without dead ends: 748 [2022-04-06 04:55:51,566 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1225 SyntacticMatches, 1 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53944 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=25311, Invalid=127179, Unknown=0, NotChecked=0, Total=152490 [2022-04-06 04:55:51,567 INFO L913 BasicCegarLoop]: 174 mSDtfsCounter, 1853 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6867 mSolverCounterSat, 1478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 8345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1478 IncrementalHoareTripleChecker+Valid, 6867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:55:51,567 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1854 Valid, 246 Invalid, 8345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1478 Valid, 6867 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-04-06 04:55:51,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-04-06 04:55:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2022-04-06 04:55:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 422 states have (on average 1.009478672985782) internal successors, (426), 423 states have internal predecessors, (426), 58 states have call successors, (58), 47 states have call predecessors, (58), 46 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-06 04:55:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 541 transitions. [2022-04-06 04:55:51,574 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 541 transitions. Word has length 558 [2022-04-06 04:55:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:55:51,575 INFO L478 AbstractCegarLoop]: Abstraction has 527 states and 541 transitions. [2022-04-06 04:55:51,575 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-04-06 04:55:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 541 transitions. [2022-04-06 04:55:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-04-06 04:55:51,578 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:55:51,579 INFO L499 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:55:51,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-04-06 04:55:51,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:55:51,795 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:55:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:55:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 736794278, now seen corresponding path program 65 times [2022-04-06 04:55:51,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:55:51,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502253529] [2022-04-06 04:55:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:55:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:55:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:55:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-06 04:55:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:55:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:55:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:55:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:55:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:55:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:55:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:55:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:55:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:55:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:55:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:55:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:55:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:55:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:55:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:55:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:55:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:55:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:55:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:55:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:55:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:55:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:55:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:55:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:55:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:55:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:55:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:55:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:55:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:55:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:55:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:55:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:55:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:55:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:55:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:55:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:55:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:55:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:55:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:55:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 04:55:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 04:55:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 04:55:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 04:55:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 04:55:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-06 04:55:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-06 04:55:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-06 04:55:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-06 04:55:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-06 04:55:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-06 04:55:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-06 04:55:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-06 04:55:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-06 04:55:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-06 04:55:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:55:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 5998 proven. 3242 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-06 04:55:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:55:55,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502253529] [2022-04-06 04:55:55,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502253529] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:55:55,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701813052] [2022-04-06 04:55:55,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:55:55,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:55:55,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:55:55,091 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:55:55,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-04-06 04:55:55,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2022-04-06 04:55:55,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:55:55,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 114 conjunts are in the unsatisfiable core [2022-04-06 04:55:55,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:56:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-06 04:56:00,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:56:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-06 04:56:01,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701813052] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:56:01,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:56:01,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 114, 114] total 173 [2022-04-06 04:56:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115090799] [2022-04-06 04:56:01,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:56:01,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2022-04-06 04:56:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:56:01,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2022-04-06 04:56:01,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6617, Invalid=23139, Unknown=0, NotChecked=0, Total=29756 [2022-04-06 04:56:01,095 INFO L87 Difference]: Start difference. First operand 527 states and 541 transitions. Second operand has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-04-06 04:56:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:56:06,351 INFO L93 Difference]: Finished difference Result 974 states and 1155 transitions. [2022-04-06 04:56:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-04-06 04:56:06,352 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Word has length 568 [2022-04-06 04:56:06,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:56:06,354 INFO L225 Difference]: With dead ends: 974 [2022-04-06 04:56:06,355 INFO L226 Difference]: Without dead ends: 753 [2022-04-06 04:56:06,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1529 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22270 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=17959, Invalid=62981, Unknown=0, NotChecked=0, Total=80940 [2022-04-06 04:56:06,362 INFO L913 BasicCegarLoop]: 124 mSDtfsCounter, 1286 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 4497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 04:56:06,363 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 196 Invalid, 4497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 04:56:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-04-06 04:56:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 529. [2022-04-06 04:56:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 424 states have (on average 1.009433962264151) internal successors, (428), 425 states have internal predecessors, (428), 58 states have call successors, (58), 47 states have call predecessors, (58), 46 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-06 04:56:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 543 transitions. [2022-04-06 04:56:06,372 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 543 transitions. Word has length 568 [2022-04-06 04:56:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:56:06,373 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 543 transitions. [2022-04-06 04:56:06,373 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-04-06 04:56:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 543 transitions. [2022-04-06 04:56:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-04-06 04:56:06,377 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:56:06,377 INFO L499 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:56:06,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-04-06 04:56:06,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-04-06 04:56:06,579 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:56:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:56:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1400903543, now seen corresponding path program 66 times [2022-04-06 04:56:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:56:06,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090913185] [2022-04-06 04:56:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:56:06,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:56:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:56:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:56:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:56:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:56:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:56:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:56:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:56:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:56:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:56:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:56:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:56:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:56:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:56:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:56:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:56:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:56:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:56:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:56:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:56:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:56:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:56:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:56:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:56:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:56:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:56:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:56:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:56:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:56:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:56:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:56:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:56:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:56:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:56:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:56:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:56:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:56:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:56:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:56:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:56:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:56:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:56:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:56:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-06 04:56:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-06 04:56:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-06 04:56:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-06 04:56:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-06 04:56:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-06 04:56:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-06 04:56:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-06 04:56:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-06 04:56:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-06 04:56:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-06 04:56:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-06 04:56:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-06 04:56:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-06 04:56:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3190 proven. 6162 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-06 04:56:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:56:07,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090913185] [2022-04-06 04:56:07,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090913185] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:56:07,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387735622] [2022-04-06 04:56:07,991 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:56:07,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:56:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:56:07,996 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:56:08,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-04-06 04:56:08,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2022-04-06 04:56:08,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:56:08,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 115 conjunts are in the unsatisfiable core [2022-04-06 04:56:08,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:56:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-06 04:56:09,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:56:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-06 04:56:09,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387735622] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:56:09,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:56:09,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 66 [2022-04-06 04:56:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671789750] [2022-04-06 04:56:09,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:56:09,946 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-06 04:56:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:56:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-06 04:56:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1786, Invalid=2504, Unknown=0, NotChecked=0, Total=4290 [2022-04-06 04:56:09,947 INFO L87 Difference]: Start difference. First operand 529 states and 543 transitions. Second operand has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-06 04:56:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:56:11,605 INFO L93 Difference]: Finished difference Result 546 states and 562 transitions. [2022-04-06 04:56:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-06 04:56:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 570 [2022-04-06 04:56:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:56:11,607 INFO L225 Difference]: With dead ends: 546 [2022-04-06 04:56:11,607 INFO L226 Difference]: Without dead ends: 546 [2022-04-06 04:56:11,608 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1303 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5350, Invalid=10906, Unknown=0, NotChecked=0, Total=16256 [2022-04-06 04:56:11,609 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 275 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:56:11,609 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 119 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 04:56:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-04-06 04:56:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 541. [2022-04-06 04:56:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 433 states have (on average 1.0092378752886837) internal successors, (437), 434 states have internal predecessors, (437), 60 states have call successors, (60), 48 states have call predecessors, (60), 47 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-06 04:56:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 556 transitions. [2022-04-06 04:56:11,616 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 556 transitions. Word has length 570 [2022-04-06 04:56:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:56:11,616 INFO L478 AbstractCegarLoop]: Abstraction has 541 states and 556 transitions. [2022-04-06 04:56:11,617 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-06 04:56:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 556 transitions. [2022-04-06 04:56:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-04-06 04:56:11,620 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:56:11,620 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:56:11,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-04-06 04:56:11,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-04-06 04:56:11,835 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:56:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:56:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash 707100593, now seen corresponding path program 67 times [2022-04-06 04:56:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:56:11,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840772155] [2022-04-06 04:56:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:56:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:56:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:56:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-06 04:56:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:56:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:56:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:56:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:56:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:56:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:56:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:56:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:56:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:56:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:56:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:56:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:56:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:56:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:56:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:56:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:56:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:56:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:56:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:56:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:56:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:56:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:56:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:56:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:56:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:56:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:56:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:56:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:56:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:56:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:56:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:56:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:56:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:56:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:56:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:56:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:56:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:56:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:56:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:56:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:56:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-06 04:56:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-06 04:56:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-06 04:56:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-06 04:56:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-06 04:56:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-06 04:56:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-06 04:56:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-06 04:56:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-06 04:56:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-06 04:56:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-06 04:56:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-06 04:56:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-06 04:56:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-06 04:56:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-06 04:56:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-06 04:56:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6444 proven. 3360 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-06 04:56:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:56:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840772155] [2022-04-06 04:56:15,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840772155] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:56:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609517238] [2022-04-06 04:56:15,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:56:15,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:56:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:56:15,332 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:56:15,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-04-06 04:56:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:15,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 116 conjunts are in the unsatisfiable core [2022-04-06 04:56:15,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:56:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6832 proven. 3192 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2022-04-06 04:56:20,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:56:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6610 proven. 3192 refuted. 0 times theorem prover too weak. 6386 trivial. 0 not checked. [2022-04-06 04:56:21,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609517238] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:56:21,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:56:21,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 116, 116] total 177 [2022-04-06 04:56:21,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420398850] [2022-04-06 04:56:21,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:56:21,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-04-06 04:56:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:56:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-04-06 04:56:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6908, Invalid=24244, Unknown=0, NotChecked=0, Total=31152 [2022-04-06 04:56:21,333 INFO L87 Difference]: Start difference. First operand 541 states and 556 transitions. Second operand has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2022-04-06 04:56:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:56:26,711 INFO L93 Difference]: Finished difference Result 996 states and 1181 transitions. [2022-04-06 04:56:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-04-06 04:56:26,712 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) Word has length 586 [2022-04-06 04:56:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:56:26,714 INFO L225 Difference]: With dead ends: 996 [2022-04-06 04:56:26,714 INFO L226 Difference]: Without dead ends: 771 [2022-04-06 04:56:26,719 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23296 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=18652, Invalid=65738, Unknown=0, NotChecked=0, Total=84390 [2022-04-06 04:56:26,719 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 1129 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4502 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 5177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 4502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:56:26,719 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 203 Invalid, 5177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 4502 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 04:56:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-04-06 04:56:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 543. [2022-04-06 04:56:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 435 states have (on average 1.0091954022988505) internal successors, (439), 436 states have internal predecessors, (439), 60 states have call successors, (60), 48 states have call predecessors, (60), 47 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-06 04:56:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 558 transitions. [2022-04-06 04:56:26,727 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 558 transitions. Word has length 586 [2022-04-06 04:56:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:56:26,728 INFO L478 AbstractCegarLoop]: Abstraction has 543 states and 558 transitions. [2022-04-06 04:56:26,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2022-04-06 04:56:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 558 transitions. [2022-04-06 04:56:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-04-06 04:56:26,731 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:56:26,732 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:56:26,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-04-06 04:56:26,935 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-04-06 04:56:26,936 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:56:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:56:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -696434988, now seen corresponding path program 68 times [2022-04-06 04:56:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:56:26,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122195929] [2022-04-06 04:56:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:56:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:56:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:56:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-06 04:56:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:56:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:56:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:56:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:56:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:56:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:56:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:56:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:56:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:56:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:56:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:56:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:56:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:56:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:56:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:56:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:56:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:56:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:56:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:56:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:56:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:56:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:56:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:56:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:56:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:56:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:56:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:56:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:56:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:56:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:56:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:56:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:56:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:56:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:56:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:56:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:56:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:56:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:56:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:56:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:56:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:56:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-06 04:56:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-06 04:56:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-06 04:56:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-06 04:56:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-06 04:56:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-06 04:56:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-06 04:56:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-06 04:56:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-06 04:56:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-06 04:56:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-06 04:56:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-06 04:56:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-06 04:56:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-06 04:56:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-06 04:56:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 6444 proven. 3474 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-06 04:56:30,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:56:30,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122195929] [2022-04-06 04:56:30,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122195929] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:56:30,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389671459] [2022-04-06 04:56:30,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:56:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:56:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:56:30,472 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:56:30,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-04-06 04:56:30,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:56:30,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:56:30,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 118 conjunts are in the unsatisfiable core [2022-04-06 04:56:30,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:56:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-06 04:56:34,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:56:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-06 04:56:35,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389671459] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:56:35,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:56:35,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 62, 62] total 179 [2022-04-06 04:56:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974570290] [2022-04-06 04:56:35,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:56:35,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-04-06 04:56:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:56:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-04-06 04:56:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=26605, Unknown=0, NotChecked=0, Total=31862 [2022-04-06 04:56:35,566 INFO L87 Difference]: Start difference. First operand 543 states and 558 transitions. Second operand has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-04-06 04:56:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:56:45,423 INFO L93 Difference]: Finished difference Result 1015 states and 1203 transitions. [2022-04-06 04:56:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2022-04-06 04:56:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Word has length 588 [2022-04-06 04:56:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:56:45,426 INFO L225 Difference]: With dead ends: 1015 [2022-04-06 04:56:45,426 INFO L226 Difference]: Without dead ends: 786 [2022-04-06 04:56:45,436 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1291 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60019 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=28083, Invalid=141249, Unknown=0, NotChecked=0, Total=169332 [2022-04-06 04:56:45,436 INFO L913 BasicCegarLoop]: 183 mSDtfsCounter, 2100 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 7360 mSolverCounterSat, 1878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 9238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1878 IncrementalHoareTripleChecker+Valid, 7360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:56:45,436 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 270 Invalid, 9238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1878 Valid, 7360 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-06 04:56:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-04-06 04:56:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 553. [2022-04-06 04:56:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 443 states have (on average 1.0090293453724606) internal successors, (447), 444 states have internal predecessors, (447), 61 states have call successors, (61), 49 states have call predecessors, (61), 48 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-06 04:56:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 568 transitions. [2022-04-06 04:56:45,442 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 568 transitions. Word has length 588 [2022-04-06 04:56:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:56:45,442 INFO L478 AbstractCegarLoop]: Abstraction has 553 states and 568 transitions. [2022-04-06 04:56:45,442 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-04-06 04:56:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 568 transitions. [2022-04-06 04:56:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-04-06 04:56:45,445 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:56:45,445 INFO L499 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:56:45,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-04-06 04:56:45,647 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-04-06 04:56:45,647 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:56:45,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:56:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -619026229, now seen corresponding path program 69 times [2022-04-06 04:56:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:56:45,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182788722] [2022-04-06 04:56:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:56:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:56:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:56:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-06 04:56:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:56:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:56:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:56:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:56:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:56:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:56:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:56:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:56:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:56:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:56:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:56:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:56:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:56:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:56:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:56:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:56:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:56:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:56:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:56:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:56:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:56:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:56:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:56:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:56:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:56:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:56:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:56:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:56:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:56:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:56:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:56:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:56:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:56:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:56:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:56:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:56:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:56:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:56:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:56:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:56:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:56:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:56:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:56:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-06 04:56:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-06 04:56:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-06 04:56:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-06 04:56:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-06 04:56:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-06 04:56:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-06 04:56:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-06 04:56:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-06 04:56:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-06 04:56:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-06 04:56:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-06 04:56:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-06 04:56:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-06 04:56:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:56:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 6673 proven. 3593 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-06 04:56:49,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:56:49,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182788722] [2022-04-06 04:56:49,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182788722] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:56:49,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938798185] [2022-04-06 04:56:49,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:56:49,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:56:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:56:49,295 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:56:49,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-04-06 04:56:49,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-04-06 04:56:49,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:56:49,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 120 conjunts are in the unsatisfiable core [2022-04-06 04:56:49,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:56:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-06 04:56:53,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:56:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-06 04:56:54,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938798185] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:56:54,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:56:54,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 63, 63] total 182 [2022-04-06 04:56:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025291972] [2022-04-06 04:56:54,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:56:54,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2022-04-06 04:56:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:56:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2022-04-06 04:56:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5436, Invalid=27506, Unknown=0, NotChecked=0, Total=32942 [2022-04-06 04:56:54,629 INFO L87 Difference]: Start difference. First operand 553 states and 568 transitions. Second operand has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-06 04:57:04,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:57:04,703 INFO L93 Difference]: Finished difference Result 1033 states and 1224 transitions. [2022-04-06 04:57:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2022-04-06 04:57:04,704 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) Word has length 598 [2022-04-06 04:57:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:57:04,706 INFO L225 Difference]: With dead ends: 1033 [2022-04-06 04:57:04,706 INFO L226 Difference]: Without dead ends: 800 [2022-04-06 04:57:04,715 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1731 GetRequests, 1313 SyntacticMatches, 1 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62116 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=29039, Invalid=146103, Unknown=0, NotChecked=0, Total=175142 [2022-04-06 04:57:04,715 INFO L913 BasicCegarLoop]: 186 mSDtfsCounter, 2011 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 7251 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 8979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 7251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:57:04,716 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 248 Invalid, 8979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 7251 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-06 04:57:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-04-06 04:57:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 563. [2022-04-06 04:57:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 451 states have (on average 1.0088691796008868) internal successors, (455), 452 states have internal predecessors, (455), 62 states have call successors, (62), 50 states have call predecessors, (62), 49 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-06 04:57:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 578 transitions. [2022-04-06 04:57:04,723 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 578 transitions. Word has length 598 [2022-04-06 04:57:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:57:04,723 INFO L478 AbstractCegarLoop]: Abstraction has 563 states and 578 transitions. [2022-04-06 04:57:04,723 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-06 04:57:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 578 transitions. [2022-04-06 04:57:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-04-06 04:57:04,726 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:57:04,727 INFO L499 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:57:04,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-04-06 04:57:04,927 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:04,927 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:57:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:57:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2127033342, now seen corresponding path program 70 times [2022-04-06 04:57:04,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:57:04,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792259500] [2022-04-06 04:57:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:57:04,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:57:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:57:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-06 04:57:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:57:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:57:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:57:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:57:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:57:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:57:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:57:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:57:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:57:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:57:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:57:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:57:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:57:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:57:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:57:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:57:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:57:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:57:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:57:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:57:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:57:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:57:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:57:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:57:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:57:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:57:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:57:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:57:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:57:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:57:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:57:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:57:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:57:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:57:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:57:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:57:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:57:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:57:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 04:57:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 04:57:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 04:57:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 04:57:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 04:57:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-06 04:57:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-06 04:57:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-06 04:57:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-06 04:57:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-06 04:57:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-06 04:57:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-06 04:57:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-06 04:57:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-06 04:57:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-06 04:57:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-06 04:57:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-06 04:57:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-06 04:57:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-06 04:57:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-06 04:57:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 6906 proven. 3714 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-06 04:57:08,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:57:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792259500] [2022-04-06 04:57:08,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792259500] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:57:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355208057] [2022-04-06 04:57:08,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:57:08,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:08,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:57:08,701 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:57:08,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-04-06 04:57:08,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:57:08,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:57:08,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 122 conjunts are in the unsatisfiable core [2022-04-06 04:57:08,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:57:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-06 04:57:13,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:57:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-06 04:57:14,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355208057] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:57:14,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:57:14,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 64, 64] total 185 [2022-04-06 04:57:14,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928385025] [2022-04-06 04:57:14,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:57:14,148 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2022-04-06 04:57:14,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:57:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2022-04-06 04:57:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5618, Invalid=28422, Unknown=0, NotChecked=0, Total=34040 [2022-04-06 04:57:14,151 INFO L87 Difference]: Start difference. First operand 563 states and 578 transitions. Second operand has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2022-04-06 04:57:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:57:24,600 INFO L93 Difference]: Finished difference Result 1051 states and 1245 transitions. [2022-04-06 04:57:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2022-04-06 04:57:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Word has length 608 [2022-04-06 04:57:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:57:24,603 INFO L225 Difference]: With dead ends: 1051 [2022-04-06 04:57:24,603 INFO L226 Difference]: Without dead ends: 814 [2022-04-06 04:57:24,612 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1335 SyntacticMatches, 1 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64249 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=30011, Invalid=151039, Unknown=0, NotChecked=0, Total=181050 [2022-04-06 04:57:24,612 INFO L913 BasicCegarLoop]: 189 mSDtfsCounter, 1840 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 7934 mSolverCounterSat, 1590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 9524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1590 IncrementalHoareTripleChecker+Valid, 7934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-04-06 04:57:24,612 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 291 Invalid, 9524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1590 Valid, 7934 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-04-06 04:57:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-04-06 04:57:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 573. [2022-04-06 04:57:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 459 states have (on average 1.008714596949891) internal successors, (463), 460 states have internal predecessors, (463), 63 states have call successors, (63), 51 states have call predecessors, (63), 50 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-06 04:57:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 588 transitions. [2022-04-06 04:57:24,619 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 588 transitions. Word has length 608 [2022-04-06 04:57:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:57:24,619 INFO L478 AbstractCegarLoop]: Abstraction has 573 states and 588 transitions. [2022-04-06 04:57:24,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2022-04-06 04:57:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 588 transitions. [2022-04-06 04:57:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-04-06 04:57:24,623 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:57:24,623 INFO L499 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:57:24,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-04-06 04:57:24,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:24,840 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:57:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:57:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2015205497, now seen corresponding path program 71 times [2022-04-06 04:57:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:57:24,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341011983] [2022-04-06 04:57:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:57:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:57:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:57:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-06 04:57:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:57:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:57:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:57:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:57:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:57:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:57:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:57:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:57:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:57:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:57:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:57:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:57:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:57:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:57:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:57:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:57:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:57:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:57:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:57:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:57:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:57:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:57:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:57:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:57:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:57:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:57:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:57:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:57:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:57:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:57:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:57:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:57:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:57:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:57:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:57:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:57:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:57:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:57:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:57:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-06 04:57:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-06 04:57:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-06 04:57:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-06 04:57:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-06 04:57:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-06 04:57:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-06 04:57:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-06 04:57:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-06 04:57:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-06 04:57:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-06 04:57:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-06 04:57:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-06 04:57:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-06 04:57:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-06 04:57:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-06 04:57:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-04-06 04:57:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-04-06 04:57:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-04-06 04:57:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-04-06 04:57:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7143 proven. 3837 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-06 04:57:28,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:57:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341011983] [2022-04-06 04:57:28,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341011983] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:57:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565110872] [2022-04-06 04:57:28,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:57:28,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:28,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:57:28,700 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:57:28,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-04-06 04:57:29,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-04-06 04:57:29,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:57:29,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 124 conjunts are in the unsatisfiable core [2022-04-06 04:57:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:57:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-06 04:57:34,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:57:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-06 04:57:35,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565110872] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:57:35,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:57:35,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 124, 124] total 188 [2022-04-06 04:57:35,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143762883] [2022-04-06 04:57:35,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:57:35,532 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2022-04-06 04:57:35,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:57:35,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2022-04-06 04:57:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7817, Invalid=27339, Unknown=0, NotChecked=0, Total=35156 [2022-04-06 04:57:35,535 INFO L87 Difference]: Start difference. First operand 573 states and 588 transitions. Second operand has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-04-06 04:57:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:57:41,465 INFO L93 Difference]: Finished difference Result 1060 states and 1257 transitions. [2022-04-06 04:57:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-04-06 04:57:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Word has length 618 [2022-04-06 04:57:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:57:41,490 INFO L225 Difference]: With dead ends: 1060 [2022-04-06 04:57:41,490 INFO L226 Difference]: Without dead ends: 819 [2022-04-06 04:57:41,495 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26395 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=21239, Invalid=74551, Unknown=0, NotChecked=0, Total=95790 [2022-04-06 04:57:41,495 INFO L913 BasicCegarLoop]: 134 mSDtfsCounter, 1448 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:57:41,495 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 196 Invalid, 5111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 04:57:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-04-06 04:57:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 575. [2022-04-06 04:57:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 461 states have (on average 1.0086767895878526) internal successors, (465), 462 states have internal predecessors, (465), 63 states have call successors, (63), 51 states have call predecessors, (63), 50 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-06 04:57:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 590 transitions. [2022-04-06 04:57:41,506 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 590 transitions. Word has length 618 [2022-04-06 04:57:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:57:41,506 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 590 transitions. [2022-04-06 04:57:41,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-04-06 04:57:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 590 transitions. [2022-04-06 04:57:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-04-06 04:57:41,509 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:57:41,509 INFO L499 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:57:41,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-04-06 04:57:41,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:41,710 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:57:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:57:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 842533788, now seen corresponding path program 72 times [2022-04-06 04:57:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:57:41,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740978708] [2022-04-06 04:57:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:57:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:57:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:57:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:57:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:57:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:57:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:57:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:57:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:57:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:57:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:57:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:57:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:57:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:57:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:57:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:57:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:57:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:57:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:57:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:57:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:57:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:57:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:57:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:57:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:57:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:57:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:57:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:57:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:57:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:57:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:57:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:57:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:57:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:57:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:57:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:57:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:57:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:57:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:57:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:57:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:57:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:57:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:57:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:57:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-06 04:57:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-06 04:57:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-06 04:57:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-06 04:57:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-06 04:57:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-06 04:57:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-06 04:57:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-06 04:57:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-06 04:57:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-06 04:57:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-06 04:57:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-06 04:57:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-06 04:57:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-06 04:57:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-06 04:57:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-06 04:57:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-06 04:57:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-06 04:57:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-06 04:57:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3780 proven. 7322 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-06 04:57:43,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:57:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740978708] [2022-04-06 04:57:43,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740978708] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:57:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885839356] [2022-04-06 04:57:43,302 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:57:43,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:43,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:57:43,303 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:57:43,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-04-06 04:57:43,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2022-04-06 04:57:43,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:57:43,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 125 conjunts are in the unsatisfiable core [2022-04-06 04:57:43,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:57:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-06 04:57:44,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:57:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-06 04:57:45,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885839356] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:57:45,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:57:45,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 71 [2022-04-06 04:57:45,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879243258] [2022-04-06 04:57:45,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:57:45,451 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-04-06 04:57:45,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:57:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-04-06 04:57:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2096, Invalid=2874, Unknown=0, NotChecked=0, Total=4970 [2022-04-06 04:57:45,452 INFO L87 Difference]: Start difference. First operand 575 states and 590 transitions. Second operand has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-06 04:57:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:57:47,421 INFO L93 Difference]: Finished difference Result 592 states and 609 transitions. [2022-04-06 04:57:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-06 04:57:47,421 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 620 [2022-04-06 04:57:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:57:47,424 INFO L225 Difference]: With dead ends: 592 [2022-04-06 04:57:47,424 INFO L226 Difference]: Without dead ends: 592 [2022-04-06 04:57:47,426 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1418 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3367 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6280, Invalid=12626, Unknown=0, NotChecked=0, Total=18906 [2022-04-06 04:57:47,427 INFO L913 BasicCegarLoop]: 82 mSDtfsCounter, 288 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:57:47,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 119 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 04:57:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-04-06 04:57:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 587. [2022-04-06 04:57:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 470 states have (on average 1.0085106382978724) internal successors, (474), 471 states have internal predecessors, (474), 65 states have call successors, (65), 52 states have call predecessors, (65), 51 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-06 04:57:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 603 transitions. [2022-04-06 04:57:47,434 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 603 transitions. Word has length 620 [2022-04-06 04:57:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:57:47,434 INFO L478 AbstractCegarLoop]: Abstraction has 587 states and 603 transitions. [2022-04-06 04:57:47,434 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-06 04:57:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 603 transitions. [2022-04-06 04:57:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-04-06 04:57:47,437 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:57:47,437 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:57:47,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-04-06 04:57:47,638 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-04-06 04:57:47,638 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:57:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:57:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1976769732, now seen corresponding path program 73 times [2022-04-06 04:57:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:57:47,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579393171] [2022-04-06 04:57:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:57:47,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:57:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:57:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-06 04:57:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:57:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:57:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:57:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:57:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:57:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:57:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:57:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:57:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:57:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:57:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:57:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:57:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:57:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:57:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:57:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:57:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:57:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:57:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:57:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:57:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:57:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:57:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:57:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:57:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:57:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:57:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:57:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:57:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:57:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:57:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:57:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:57:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:57:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:57:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:57:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:57:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:57:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:57:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:57:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:57:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-06 04:57:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-06 04:57:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-06 04:57:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-06 04:57:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-06 04:57:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-06 04:57:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-06 04:57:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-06 04:57:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-06 04:57:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-06 04:57:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-06 04:57:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-06 04:57:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-06 04:57:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-06 04:57:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-06 04:57:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-06 04:57:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-06 04:57:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-06 04:57:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-06 04:57:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-04-06 04:57:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-04-06 04:57:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7629 proven. 3965 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-06 04:57:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:57:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579393171] [2022-04-06 04:57:51,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579393171] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:57:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432737042] [2022-04-06 04:57:51,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:57:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:57:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:57:51,707 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:57:51,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-04-06 04:57:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:57:51,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 126 conjunts are in the unsatisfiable core [2022-04-06 04:57:51,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:57:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 8052 proven. 3782 refuted. 0 times theorem prover too weak. 7324 trivial. 0 not checked. [2022-04-06 04:57:57,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:57:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7810 proven. 3782 refuted. 0 times theorem prover too weak. 7566 trivial. 0 not checked. [2022-04-06 04:57:58,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432737042] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:57:58,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:57:58,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 126, 126] total 192 [2022-04-06 04:57:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261497613] [2022-04-06 04:57:58,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:57:58,574 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-04-06 04:57:58,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:57:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-04-06 04:57:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8133, Invalid=28539, Unknown=0, NotChecked=0, Total=36672 [2022-04-06 04:57:58,576 INFO L87 Difference]: Start difference. First operand 587 states and 603 transitions. Second operand has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2022-04-06 04:58:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:58:04,633 INFO L93 Difference]: Finished difference Result 1082 states and 1283 transitions. [2022-04-06 04:58:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-04-06 04:58:04,633 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) Word has length 636 [2022-04-06 04:58:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:58:04,636 INFO L225 Difference]: With dead ends: 1082 [2022-04-06 04:58:04,636 INFO L226 Difference]: Without dead ends: 837 [2022-04-06 04:58:04,642 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1396 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27511 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=21992, Invalid=77548, Unknown=0, NotChecked=0, Total=99540 [2022-04-06 04:58:04,642 INFO L913 BasicCegarLoop]: 136 mSDtfsCounter, 1311 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3780 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 4740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 3780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 04:58:04,642 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 188 Invalid, 4740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 3780 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 04:58:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-04-06 04:58:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 589. [2022-04-06 04:58:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 472 states have (on average 1.0084745762711864) internal successors, (476), 473 states have internal predecessors, (476), 65 states have call successors, (65), 52 states have call predecessors, (65), 51 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-06 04:58:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 605 transitions. [2022-04-06 04:58:04,649 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 605 transitions. Word has length 636 [2022-04-06 04:58:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:58:04,649 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 605 transitions. [2022-04-06 04:58:04,649 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2022-04-06 04:58:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 605 transitions. [2022-04-06 04:58:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-04-06 04:58:04,653 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:58:04,653 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:58:04,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-04-06 04:58:04,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:58:04,854 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:58:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:58:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1168256295, now seen corresponding path program 74 times [2022-04-06 04:58:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:58:04,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465193859] [2022-04-06 04:58:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:58:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:58:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:58:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-06 04:58:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:58:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:58:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:58:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:58:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:58:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:58:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:58:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:58:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:58:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:58:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:58:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:58:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:58:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:58:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:58:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:58:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:58:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:58:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:58:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:58:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:58:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:58:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:58:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:58:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:58:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:58:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:58:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:58:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:58:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:58:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:58:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:58:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:58:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:58:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:58:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:58:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:58:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:58:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:58:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:58:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:58:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:58:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-06 04:58:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-06 04:58:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-06 04:58:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-06 04:58:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-06 04:58:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-06 04:58:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-06 04:58:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-06 04:58:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-06 04:58:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-06 04:58:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-06 04:58:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-06 04:58:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-06 04:58:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-06 04:58:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-06 04:58:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-06 04:58:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-06 04:58:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-06 04:58:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-06 04:58:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 7629 proven. 4089 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-06 04:58:09,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:58:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465193859] [2022-04-06 04:58:09,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465193859] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:58:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908554155] [2022-04-06 04:58:09,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 04:58:09,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:58:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:58:09,029 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:58:09,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-04-06 04:58:09,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 04:58:09,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:58:09,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 128 conjunts are in the unsatisfiable core [2022-04-06 04:58:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:58:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-06 04:58:13,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:58:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-06 04:58:14,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908554155] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:58:14,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:58:14,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 67, 67] total 194 [2022-04-06 04:58:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288259593] [2022-04-06 04:58:14,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:58:14,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-04-06 04:58:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:58:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-04-06 04:58:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6182, Invalid=31260, Unknown=0, NotChecked=0, Total=37442 [2022-04-06 04:58:14,822 INFO L87 Difference]: Start difference. First operand 589 states and 605 transitions. Second operand has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2022-04-06 04:58:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:58:26,285 INFO L93 Difference]: Finished difference Result 1101 states and 1305 transitions. [2022-04-06 04:58:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-04-06 04:58:26,286 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) Word has length 638 [2022-04-06 04:58:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:58:26,288 INFO L225 Difference]: With dead ends: 1101 [2022-04-06 04:58:26,288 INFO L226 Difference]: Without dead ends: 852 [2022-04-06 04:58:26,298 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1847 GetRequests, 1401 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70864 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=33023, Invalid=166339, Unknown=0, NotChecked=0, Total=199362 [2022-04-06 04:58:26,299 INFO L913 BasicCegarLoop]: 198 mSDtfsCounter, 2049 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 8995 mSolverCounterSat, 1725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 10720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1725 IncrementalHoareTripleChecker+Valid, 8995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-04-06 04:58:26,299 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 295 Invalid, 10720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1725 Valid, 8995 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-04-06 04:58:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-04-06 04:58:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 599. [2022-04-06 04:58:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 480 states have (on average 1.0083333333333333) internal successors, (484), 481 states have internal predecessors, (484), 66 states have call successors, (66), 53 states have call predecessors, (66), 52 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-06 04:58:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 615 transitions. [2022-04-06 04:58:26,306 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 615 transitions. Word has length 638 [2022-04-06 04:58:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:58:26,307 INFO L478 AbstractCegarLoop]: Abstraction has 599 states and 615 transitions. [2022-04-06 04:58:26,307 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2022-04-06 04:58:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 615 transitions. [2022-04-06 04:58:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-04-06 04:58:26,311 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:58:26,311 INFO L499 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:58:26,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-04-06 04:58:26,512 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:58:26,512 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:58:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:58:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1475078818, now seen corresponding path program 75 times [2022-04-06 04:58:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:58:26,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707036499] [2022-04-06 04:58:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:58:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:58:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:58:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-06 04:58:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 04:58:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 04:58:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 04:58:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 04:58:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 04:58:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 04:58:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 04:58:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 04:58:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 04:58:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 04:58:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 04:58:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 04:58:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 04:58:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 04:58:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 04:58:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 04:58:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 04:58:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 04:58:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 04:58:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 04:58:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 04:58:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 04:58:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 04:58:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 04:58:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 04:58:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 04:58:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 04:58:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 04:58:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 04:58:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 04:58:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 04:58:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 04:58:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 04:58:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 04:58:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 04:58:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 04:58:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 04:58:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 04:58:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 04:58:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 04:58:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 04:58:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 04:58:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-06 04:58:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-06 04:58:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-06 04:58:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-06 04:58:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-06 04:58:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-06 04:58:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-06 04:58:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-06 04:58:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-06 04:58:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-06 04:58:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-06 04:58:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-06 04:58:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-06 04:58:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-06 04:58:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-06 04:58:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-04-06 04:58:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-04-06 04:58:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-04-06 04:58:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-04-06 04:58:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-04-06 04:58:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 7878 proven. 4218 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-06 04:58:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:58:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707036499] [2022-04-06 04:58:30,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707036499] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:58:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210357723] [2022-04-06 04:58:30,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 04:58:30,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:58:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:58:30,713 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:58:30,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-04-06 04:58:31,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2022-04-06 04:58:31,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:58:31,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 130 conjunts are in the unsatisfiable core [2022-04-06 04:58:31,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:58:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-06 04:58:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:58:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-06 04:58:36,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210357723] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:58:36,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:58:36,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 68, 68] total 197 [2022-04-06 04:58:36,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732993240] [2022-04-06 04:58:36,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:58:36,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2022-04-06 04:58:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:58:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2022-04-06 04:58:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6376, Invalid=32236, Unknown=0, NotChecked=0, Total=38612 [2022-04-06 04:58:36,901 INFO L87 Difference]: Start difference. First operand 599 states and 615 transitions. Second operand has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-04-06 04:58:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:58:48,200 INFO L93 Difference]: Finished difference Result 1119 states and 1326 transitions. [2022-04-06 04:58:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-04-06 04:58:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) Word has length 648 [2022-04-06 04:58:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:58:48,203 INFO L225 Difference]: With dead ends: 1119 [2022-04-06 04:58:48,203 INFO L226 Difference]: Without dead ends: 866 [2022-04-06 04:58:48,212 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1423 SyntacticMatches, 1 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73141 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=34059, Invalid=171603, Unknown=0, NotChecked=0, Total=205662 [2022-04-06 04:58:48,213 INFO L913 BasicCegarLoop]: 201 mSDtfsCounter, 2218 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7652 mSolverCounterSat, 1812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 9464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1812 IncrementalHoareTripleChecker+Valid, 7652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-06 04:58:48,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 268 Invalid, 9464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1812 Valid, 7652 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-06 04:58:48,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-04-06 04:58:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 609. [2022-04-06 04:58:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 488 states have (on average 1.0081967213114753) internal successors, (492), 489 states have internal predecessors, (492), 67 states have call successors, (67), 54 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-06 04:58:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 625 transitions. [2022-04-06 04:58:48,218 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 625 transitions. Word has length 648 [2022-04-06 04:58:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:58:48,218 INFO L478 AbstractCegarLoop]: Abstraction has 609 states and 625 transitions. [2022-04-06 04:58:48,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-04-06 04:58:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 625 transitions. [2022-04-06 04:58:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-04-06 04:58:48,222 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:58:48,222 INFO L499 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:58:48,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-04-06 04:58:48,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-04-06 04:58:48,424 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:58:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:58:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1326209323, now seen corresponding path program 76 times [2022-04-06 04:58:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:58:48,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013170330] [2022-04-06 04:58:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:58:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:58:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:58:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-06 04:58:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-06 04:58:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-06 04:58:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-06 04:58:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-06 04:58:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-06 04:58:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-06 04:58:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-06 04:58:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-06 04:58:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-06 04:58:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-06 04:58:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-06 04:58:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-06 04:58:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-06 04:58:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-06 04:58:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-06 04:58:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-06 04:58:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-06 04:58:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-06 04:58:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-06 04:58:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-06 04:58:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-06 04:58:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-06 04:58:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-06 04:58:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-06 04:58:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-06 04:58:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-06 04:58:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-06 04:58:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-06 04:58:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-06 04:58:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-06 04:58:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-06 04:58:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-06 04:58:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-06 04:58:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-06 04:58:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-06 04:58:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-06 04:58:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-06 04:58:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-06 04:58:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-06 04:58:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-06 04:58:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-06 04:58:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-06 04:58:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-06 04:58:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-06 04:58:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-06 04:58:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-06 04:58:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-06 04:58:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-06 04:58:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-06 04:58:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-06 04:58:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-06 04:58:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-06 04:58:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-06 04:58:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-06 04:58:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-04-06 04:58:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-04-06 04:58:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-04-06 04:58:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-04-06 04:58:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-04-06 04:58:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-04-06 04:58:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-04-06 04:58:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-04-06 04:58:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-04-06 04:58:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:58:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 8131 proven. 4349 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-06 04:58:52,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:58:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013170330] [2022-04-06 04:58:52,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013170330] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:58:52,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966648279] [2022-04-06 04:58:52,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 04:58:52,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:58:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:58:52,761 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:58:52,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-04-06 04:58:52,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 04:58:52,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:58:52,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 132 conjunts are in the unsatisfiable core [2022-04-06 04:58:52,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:58:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-06 04:58:57,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:58:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-06 04:58:58,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966648279] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:58:58,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:58:58,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 69, 69] total 200 [2022-04-06 04:58:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140566666] [2022-04-06 04:58:58,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:58:58,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2022-04-06 04:58:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:58:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2022-04-06 04:58:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6573, Invalid=33227, Unknown=0, NotChecked=0, Total=39800 [2022-04-06 04:58:58,756 INFO L87 Difference]: Start difference. First operand 609 states and 625 transitions. Second operand has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-04-06 04:59:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:59:10,602 INFO L93 Difference]: Finished difference Result 1137 states and 1347 transitions. [2022-04-06 04:59:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2022-04-06 04:59:10,603 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) Word has length 658 [2022-04-06 04:59:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:59:10,605 INFO L225 Difference]: With dead ends: 1137 [2022-04-06 04:59:10,605 INFO L226 Difference]: Without dead ends: 880 [2022-04-06 04:59:10,614 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1905 GetRequests, 1445 SyntacticMatches, 1 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75454 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=35111, Invalid=176949, Unknown=0, NotChecked=0, Total=212060 [2022-04-06 04:59:10,615 INFO L913 BasicCegarLoop]: 204 mSDtfsCounter, 2163 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 8747 mSolverCounterSat, 1872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 10619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1872 IncrementalHoareTripleChecker+Valid, 8747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-06 04:59:10,615 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 281 Invalid, 10619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1872 Valid, 8747 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-04-06 04:59:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-04-06 04:59:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 619. [2022-04-06 04:59:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 496 states have (on average 1.0080645161290323) internal successors, (500), 497 states have internal predecessors, (500), 68 states have call successors, (68), 55 states have call predecessors, (68), 54 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-06 04:59:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 635 transitions. [2022-04-06 04:59:10,621 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 635 transitions. Word has length 658 [2022-04-06 04:59:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:59:10,621 INFO L478 AbstractCegarLoop]: Abstraction has 619 states and 635 transitions. [2022-04-06 04:59:10,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-04-06 04:59:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 635 transitions. [2022-04-06 04:59:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-04-06 04:59:10,626 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:59:10,626 INFO L499 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:59:10,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-04-06 04:59:10,826 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-04-06 04:59:10,826 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:59:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:59:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash -154381940, now seen corresponding path program 77 times [2022-04-06 04:59:10,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:59:10,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450710659] [2022-04-06 04:59:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:59:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:59:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:59:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-06 04:59:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-06 04:59:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-06 04:59:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-06 04:59:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-06 04:59:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-06 04:59:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-06 04:59:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-06 04:59:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-06 04:59:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-06 04:59:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-06 04:59:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-06 04:59:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-06 04:59:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-06 04:59:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-06 04:59:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-06 04:59:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-06 04:59:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-06 04:59:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-06 04:59:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-06 04:59:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-06 04:59:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-06 04:59:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-06 04:59:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-06 04:59:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-06 04:59:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-06 04:59:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-06 04:59:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-06 04:59:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-06 04:59:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-06 04:59:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-06 04:59:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-06 04:59:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-06 04:59:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-06 04:59:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-06 04:59:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-06 04:59:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-06 04:59:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-06 04:59:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-06 04:59:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-06 04:59:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-06 04:59:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-06 04:59:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-06 04:59:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-06 04:59:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-06 04:59:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-06 04:59:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-06 04:59:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-06 04:59:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-06 04:59:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-06 04:59:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-06 04:59:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-06 04:59:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-06 04:59:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-06 04:59:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-06 04:59:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-06 04:59:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-06 04:59:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-06 04:59:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-06 04:59:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-04-06 04:59:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-04-06 04:59:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-04-06 04:59:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-04-06 04:59:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-04-06 04:59:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-04-06 04:59:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8388 proven. 4482 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-06 04:59:15,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:59:15,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450710659] [2022-04-06 04:59:15,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450710659] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:59:15,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875471505] [2022-04-06 04:59:15,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 04:59:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:59:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:59:15,313 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:59:15,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-04-06 04:59:15,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2022-04-06 04:59:15,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:59:15,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 134 conjunts are in the unsatisfiable core [2022-04-06 04:59:15,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:59:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-06 04:59:22,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:59:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-06 04:59:23,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875471505] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:59:23,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:59:23,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 134, 134] total 203 [2022-04-06 04:59:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530948406] [2022-04-06 04:59:23,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:59:23,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-04-06 04:59:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:59:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-04-06 04:59:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9117, Invalid=31889, Unknown=0, NotChecked=0, Total=41006 [2022-04-06 04:59:23,053 INFO L87 Difference]: Start difference. First operand 619 states and 635 transitions. Second operand has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-04-06 04:59:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:59:29,946 INFO L93 Difference]: Finished difference Result 1146 states and 1359 transitions. [2022-04-06 04:59:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-04-06 04:59:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) Word has length 668 [2022-04-06 04:59:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:59:29,948 INFO L225 Difference]: With dead ends: 1146 [2022-04-06 04:59:29,949 INFO L226 Difference]: Without dead ends: 885 [2022-04-06 04:59:29,953 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1799 GetRequests, 1466 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30870 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=24794, Invalid=87096, Unknown=0, NotChecked=0, Total=111890 [2022-04-06 04:59:29,953 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 1926 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 3983 mSolverCounterSat, 1423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 5406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1423 IncrementalHoareTripleChecker+Valid, 3983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 04:59:29,953 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 176 Invalid, 5406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 3983 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 04:59:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-04-06 04:59:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 621. [2022-04-06 04:59:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 498 states have (on average 1.0080321285140563) internal successors, (502), 499 states have internal predecessors, (502), 68 states have call successors, (68), 55 states have call predecessors, (68), 54 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-06 04:59:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 637 transitions. [2022-04-06 04:59:29,961 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 637 transitions. Word has length 668 [2022-04-06 04:59:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:59:29,961 INFO L478 AbstractCegarLoop]: Abstraction has 621 states and 637 transitions. [2022-04-06 04:59:29,961 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-04-06 04:59:29,961 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 637 transitions. [2022-04-06 04:59:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-04-06 04:59:29,965 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:59:29,966 INFO L499 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:59:29,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-04-06 04:59:30,168 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:59:30,169 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:59:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:59:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -255257105, now seen corresponding path program 78 times [2022-04-06 04:59:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:59:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155847188] [2022-04-06 04:59:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:59:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:59:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:59:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:59:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:59:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:59:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:59:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:59:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:59:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:59:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:59:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:59:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:59:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:59:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:59:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:59:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:59:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:59:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:59:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:59:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:59:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:59:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:59:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:59:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:59:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:59:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:59:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:59:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:59:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:59:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:59:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:59:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:59:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:59:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:59:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:59:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:59:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:59:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:59:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:59:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:59:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:59:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:59:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:59:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:59:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-06 04:59:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-06 04:59:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-06 04:59:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-06 04:59:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-06 04:59:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-06 04:59:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-06 04:59:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-06 04:59:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-06 04:59:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-06 04:59:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-06 04:59:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-06 04:59:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-06 04:59:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-06 04:59:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-06 04:59:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-06 04:59:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-06 04:59:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-06 04:59:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-06 04:59:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-04-06 04:59:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-04-06 04:59:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-04-06 04:59:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-04-06 04:59:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4420 proven. 8582 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-06 04:59:32,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:59:32,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155847188] [2022-04-06 04:59:32,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155847188] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:59:32,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125287779] [2022-04-06 04:59:32,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 04:59:32,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:59:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:59:32,021 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:59:32,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-04-06 04:59:32,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-04-06 04:59:32,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 04:59:32,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 135 conjunts are in the unsatisfiable core [2022-04-06 04:59:32,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:59:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-06 04:59:33,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:59:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-06 04:59:34,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125287779] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:59:34,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:59:34,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 76 [2022-04-06 04:59:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490812416] [2022-04-06 04:59:34,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:59:34,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-04-06 04:59:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:59:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-04-06 04:59:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2431, Invalid=3269, Unknown=0, NotChecked=0, Total=5700 [2022-04-06 04:59:34,365 INFO L87 Difference]: Start difference. First operand 621 states and 637 transitions. Second operand has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-06 04:59:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:59:36,461 INFO L93 Difference]: Finished difference Result 638 states and 656 transitions. [2022-04-06 04:59:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-06 04:59:36,462 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 670 [2022-04-06 04:59:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:59:36,463 INFO L225 Difference]: With dead ends: 638 [2022-04-06 04:59:36,463 INFO L226 Difference]: Without dead ends: 638 [2022-04-06 04:59:36,464 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1533 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3807 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7285, Invalid=14471, Unknown=0, NotChecked=0, Total=21756 [2022-04-06 04:59:36,464 INFO L913 BasicCegarLoop]: 87 mSDtfsCounter, 318 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:59:36,464 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 139 Invalid, 2394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 04:59:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-04-06 04:59:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 633. [2022-04-06 04:59:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 507 states have (on average 1.0078895463510849) internal successors, (511), 508 states have internal predecessors, (511), 70 states have call successors, (70), 56 states have call predecessors, (70), 55 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-06 04:59:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 650 transitions. [2022-04-06 04:59:36,470 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 650 transitions. Word has length 670 [2022-04-06 04:59:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:59:36,471 INFO L478 AbstractCegarLoop]: Abstraction has 633 states and 650 transitions. [2022-04-06 04:59:36,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-06 04:59:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 650 transitions. [2022-04-06 04:59:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-04-06 04:59:36,477 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:59:36,478 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:59:36,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-04-06 04:59:36,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:59:36,691 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:59:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:59:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1138548457, now seen corresponding path program 79 times [2022-04-06 04:59:36,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:59:36,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4684615] [2022-04-06 04:59:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:59:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:59:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 04:59:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-06 04:59:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-06 04:59:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-06 04:59:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-06 04:59:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-06 04:59:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-06 04:59:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-06 04:59:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-06 04:59:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-06 04:59:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-06 04:59:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-06 04:59:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-06 04:59:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-06 04:59:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-06 04:59:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-06 04:59:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-06 04:59:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-06 04:59:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-06 04:59:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-06 04:59:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-06 04:59:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-06 04:59:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-06 04:59:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-06 04:59:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-06 04:59:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-06 04:59:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-06 04:59:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-06 04:59:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-06 04:59:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-06 04:59:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-06 04:59:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-06 04:59:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-06 04:59:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-06 04:59:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-06 04:59:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-06 04:59:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-06 04:59:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-06 04:59:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-06 04:59:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-06 04:59:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-06 04:59:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-06 04:59:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-06 04:59:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-06 04:59:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-06 04:59:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-06 04:59:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-06 04:59:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-06 04:59:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-06 04:59:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-06 04:59:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-06 04:59:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-06 04:59:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-06 04:59:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-06 04:59:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-06 04:59:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-06 04:59:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-06 04:59:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-06 04:59:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-06 04:59:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-06 04:59:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-06 04:59:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-06 04:59:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-04-06 04:59:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-04-06 04:59:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-04-06 04:59:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-04-06 04:59:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-04-06 04:59:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-04-06 04:59:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 8914 proven. 4620 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-06 04:59:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 04:59:41,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4684615] [2022-04-06 04:59:41,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4684615] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 04:59:41,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202279937] [2022-04-06 04:59:41,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 04:59:41,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 04:59:41,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 04:59:41,360 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 04:59:41,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-04-06 04:59:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 04:59:41,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 136 conjunts are in the unsatisfiable core [2022-04-06 04:59:41,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 04:59:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9372 proven. 4422 refuted. 0 times theorem prover too weak. 8584 trivial. 0 not checked. [2022-04-06 04:59:48,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 04:59:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9110 proven. 4422 refuted. 0 times theorem prover too weak. 8846 trivial. 0 not checked. [2022-04-06 04:59:49,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202279937] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 04:59:49,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 04:59:49,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 136, 136] total 207 [2022-04-06 04:59:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514509048] [2022-04-06 04:59:49,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 04:59:49,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2022-04-06 04:59:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 04:59:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2022-04-06 04:59:49,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9458, Invalid=33184, Unknown=0, NotChecked=0, Total=42642 [2022-04-06 04:59:49,098 INFO L87 Difference]: Start difference. First operand 633 states and 650 transitions. Second operand has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2022-04-06 04:59:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 04:59:56,210 INFO L93 Difference]: Finished difference Result 1168 states and 1385 transitions. [2022-04-06 04:59:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-04-06 04:59:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) Word has length 686 [2022-04-06 04:59:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 04:59:56,212 INFO L225 Difference]: With dead ends: 1168 [2022-04-06 04:59:56,212 INFO L226 Difference]: Without dead ends: 903 [2022-04-06 04:59:56,219 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1845 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32076 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=25607, Invalid=90333, Unknown=0, NotChecked=0, Total=115940 [2022-04-06 04:59:56,251 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 1249 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 5752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 04:59:56,251 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 228 Invalid, 5752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 4930 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 04:59:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-04-06 04:59:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 635. [2022-04-06 04:59:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 509 states have (on average 1.0078585461689586) internal successors, (513), 510 states have internal predecessors, (513), 70 states have call successors, (70), 56 states have call predecessors, (70), 55 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-06 04:59:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 652 transitions. [2022-04-06 04:59:56,257 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 652 transitions. Word has length 686 [2022-04-06 04:59:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 04:59:56,257 INFO L478 AbstractCegarLoop]: Abstraction has 635 states and 652 transitions. [2022-04-06 04:59:56,257 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2022-04-06 04:59:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 652 transitions. [2022-04-06 04:59:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-04-06 04:59:56,261 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 04:59:56,261 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 04:59:56,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-04-06 04:59:56,461 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-04-06 04:59:56,462 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 04:59:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 04:59:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1428507974, now seen corresponding path program 80 times [2022-04-06 04:59:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 04:59:56,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674527050] [2022-04-06 04:59:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 04:59:56,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 04:59:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:00:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-06 05:00:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-06 05:00:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-06 05:00:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-06 05:00:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-06 05:00:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-06 05:00:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-06 05:00:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-06 05:00:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-06 05:00:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-06 05:00:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-06 05:00:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-06 05:00:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-06 05:00:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-06 05:00:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-06 05:00:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-06 05:00:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-06 05:00:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-06 05:00:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-06 05:00:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-06 05:00:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-06 05:00:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-06 05:00:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-06 05:00:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-06 05:00:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-06 05:00:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-06 05:00:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-06 05:00:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-06 05:00:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-06 05:00:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-06 05:00:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-06 05:00:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-06 05:00:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-06 05:00:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-06 05:00:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-06 05:00:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-06 05:00:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-06 05:00:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-06 05:00:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-06 05:00:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-06 05:00:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-06 05:00:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-06 05:00:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-06 05:00:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-06 05:00:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-06 05:00:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-06 05:00:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-06 05:00:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-06 05:00:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-06 05:00:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-06 05:00:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-06 05:00:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-06 05:00:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-06 05:00:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-06 05:00:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-06 05:00:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-06 05:00:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-06 05:00:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-04-06 05:00:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-04-06 05:00:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-04-06 05:00:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-04-06 05:00:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-04-06 05:00:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-04-06 05:00:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-04-06 05:00:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-04-06 05:00:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-04-06 05:00:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-04-06 05:00:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:00:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 8914 proven. 4754 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-06 05:00:01,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:00:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674527050] [2022-04-06 05:00:01,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674527050] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 05:00:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804050417] [2022-04-06 05:00:01,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 05:00:01,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:00:01,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:00:01,223 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:00:01,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-04-06 05:00:01,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 05:00:01,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 05:00:01,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 138 conjunts are in the unsatisfiable core [2022-04-06 05:00:01,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:00:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-06 05:00:06,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:00:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-06 05:00:07,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804050417] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:00:07,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 05:00:07,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 72, 72] total 209 [2022-04-06 05:00:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931312035] [2022-04-06 05:00:07,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 05:00:07,713 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2022-04-06 05:00:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:00:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2022-04-06 05:00:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7182, Invalid=36290, Unknown=0, NotChecked=0, Total=43472 [2022-04-06 05:00:07,716 INFO L87 Difference]: Start difference. First operand 635 states and 652 transitions. Second operand has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-04-06 05:00:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:00:20,341 INFO L93 Difference]: Finished difference Result 1187 states and 1407 transitions. [2022-04-06 05:00:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-04-06 05:00:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) Word has length 688 [2022-04-06 05:00:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:00:20,343 INFO L225 Difference]: With dead ends: 1187 [2022-04-06 05:00:20,343 INFO L226 Difference]: Without dead ends: 918 [2022-04-06 05:00:20,354 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82609 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=38363, Invalid=193479, Unknown=0, NotChecked=0, Total=231842 [2022-04-06 05:00:20,354 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 2504 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 8354 mSolverCounterSat, 2084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 10438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2084 IncrementalHoareTripleChecker+Valid, 8354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-06 05:00:20,355 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 285 Invalid, 10438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2084 Valid, 8354 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-04-06 05:00:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-04-06 05:00:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 645. [2022-04-06 05:00:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 517 states have (on average 1.0077369439071566) internal successors, (521), 518 states have internal predecessors, (521), 71 states have call successors, (71), 57 states have call predecessors, (71), 56 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-04-06 05:00:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 662 transitions. [2022-04-06 05:00:20,362 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 662 transitions. Word has length 688 [2022-04-06 05:00:20,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:00:20,363 INFO L478 AbstractCegarLoop]: Abstraction has 645 states and 662 transitions. [2022-04-06 05:00:20,363 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-04-06 05:00:20,363 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 662 transitions. [2022-04-06 05:00:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-04-06 05:00:20,367 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:00:20,368 INFO L499 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:00:20,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-04-06 05:00:20,587 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:00:20,587 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:00:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:00:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 443238705, now seen corresponding path program 81 times [2022-04-06 05:00:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:00:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758730472] [2022-04-06 05:00:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:00:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:00:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat