/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-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:34:49,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:34:49,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:34:49,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 03:34:49,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:34:49,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:34:49,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:34:49,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:34:49,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:34:49,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:34:49,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:34:49,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:34:49,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:34:49,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:34:49,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:34:49,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:34:49,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:34:49,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:34:49,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:34:49,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:34:49,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:34:49,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:34:49,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:34:49,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:34:49,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:34:49,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:34:49,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:49,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:34:49,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:34:49,390 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:34:49,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:34:49,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:34:49,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:34:49,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:34:49,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:34:49,668 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:34:49,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-03-20 03:34:49,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8970399a5/2c7f2b2129d24b5ab1ef94f924487ef5/FLAG02485077e [2022-03-20 03:34:50,138 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:34:50,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-03-20 03:34:50,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8970399a5/2c7f2b2129d24b5ab1ef94f924487ef5/FLAG02485077e [2022-03-20 03:34:50,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8970399a5/2c7f2b2129d24b5ab1ef94f924487ef5 [2022-03-20 03:34:50,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:34:50,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:34:50,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:50,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:34:50,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:34:50,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4c27bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50, skipping insertion in model container [2022-03-20 03:34:50,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:34:50,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:34:50,733 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-crafted/simple_array_index_value_2.i[919,932] [2022-03-20 03:34:50,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:50,751 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:34:50,761 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-crafted/simple_array_index_value_2.i[919,932] [2022-03-20 03:34:50,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:50,775 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:34:50,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50 WrapperNode [2022-03-20 03:34:50,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:50,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:34:50,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:34:50,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:34:50,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:34:50,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:34:50,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:34:50,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:34:50,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (1/1) ... [2022-03-20 03:34:50,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:50,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:50,851 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) [2022-03-20 03:34:50,861 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 [2022-03-20 03:34:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:34:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:34:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:34:50,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 03:34:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:34:50,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:34:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:34:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:34:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 03:34:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 03:34:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:34:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:34:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 03:34:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:34:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:34:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:34:50,948 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:34:50,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:34:51,080 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:34:51,085 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:34:51,086 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 03:34:51,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:51 BoogieIcfgContainer [2022-03-20 03:34:51,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:34:51,088 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:34:51,088 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:34:51,096 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:34:51,099 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:51" (1/1) ... [2022-03-20 03:34:51,100 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:34:51,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:51 BasicIcfg [2022-03-20 03:34:51,119 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:34:51,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:34:51,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:34:51,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:34:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:34:50" (1/4) ... [2022-03-20 03:34:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aed6f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:51, skipping insertion in model container [2022-03-20 03:34:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:50" (2/4) ... [2022-03-20 03:34:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aed6f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:51, skipping insertion in model container [2022-03-20 03:34:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:51" (3/4) ... [2022-03-20 03:34:51,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aed6f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:51, skipping insertion in model container [2022-03-20 03:34:51,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:51" (4/4) ... [2022-03-20 03:34:51,141 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.iJordan [2022-03-20 03:34:51,145 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:34:51,146 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:34:51,197 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:34:51,206 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 [2022-03-20 03:34:51,206 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:34:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 03:34:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-20 03:34:51,238 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:51,238 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:51,239 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash -183287108, now seen corresponding path program 1 times [2022-03-20 03:34:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457794372] [2022-03-20 03:34:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:51,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457794372] [2022-03-20 03:34:51,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457794372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:34:51,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:34:51,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 03:34:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457339874] [2022-03-20 03:34:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:51,539 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 03:34:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 03:34:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 03:34:51,568 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-03-20 03:34:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:51,695 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-03-20 03:34:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 03:34:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2022-03-20 03:34:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:51,708 INFO L225 Difference]: With dead ends: 38 [2022-03-20 03:34:51,709 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 03:34:51,711 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 03:34:51,714 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:34:51,715 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:34:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 03:34:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-03-20 03:34:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:34:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-03-20 03:34:51,751 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2022-03-20 03:34:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:51,751 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-03-20 03:34:51,752 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-03-20 03:34:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-03-20 03:34:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 03:34:51,753 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:51,753 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:51,754 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:34:51,754 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 364957256, now seen corresponding path program 1 times [2022-03-20 03:34:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:51,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775916779] [2022-03-20 03:34:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:51,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:51,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:34:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775916779] [2022-03-20 03:34:51,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775916779] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:34:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364397262] [2022-03-20 03:34:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:51,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:51,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:51,953 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) [2022-03-20 03:34:51,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 03:34:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:52,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-20 03:34:52,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:34:52,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-20 03:34:52,417 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-20 03:34:52,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2022-03-20 03:34:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:52,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:34:52,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-03-20 03:34:52,769 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-20 03:34:52,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-03-20 03:34:52,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-20 03:34:52,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 4 [2022-03-20 03:34:52,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-20 03:34:52,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-20 03:34:52,844 INFO L356 Elim1Store]: treesize reduction 28, result has 50.0 percent of original size [2022-03-20 03:34:52,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 47 [2022-03-20 03:34:53,021 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-03-20 03:34:53,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 85 [2022-03-20 03:34:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:53,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364397262] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:34:53,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:34:53,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 12] total 20 [2022-03-20 03:34:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583560749] [2022-03-20 03:34:53,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:34:53,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 03:34:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 03:34:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-03-20 03:34:53,317 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:34:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:53,719 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-03-20 03:34:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 03:34:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2022-03-20 03:34:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:53,722 INFO L225 Difference]: With dead ends: 41 [2022-03-20 03:34:53,722 INFO L226 Difference]: Without dead ends: 41 [2022-03-20 03:34:53,722 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-03-20 03:34:53,723 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:34:53,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 79 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 03:34:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-20 03:34:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-03-20 03:34:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 03:34:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-03-20 03:34:53,729 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2022-03-20 03:34:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:53,730 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-03-20 03:34:53,730 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:34:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-03-20 03:34:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 03:34:53,735 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:53,735 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:53,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 03:34:53,961 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:53,962 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1998589396, now seen corresponding path program 2 times [2022-03-20 03:34:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:53,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130739062] [2022-03-20 03:34:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:53,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:34:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:54,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:34:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 03:34:54,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:54,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130739062] [2022-03-20 03:34:54,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130739062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:34:54,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640646978] [2022-03-20 03:34:54,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 03:34:54,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:54,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:54,120 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) [2022-03-20 03:34:54,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 03:34:54,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 03:34:54,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:34:54,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 03:34:54,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:34:54,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-20 03:34:54,522 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-03-20 03:34:54,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2022-03-20 03:34:54,925 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-20 03:34:54,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2022-03-20 03:34:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 03:34:55,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:34:58,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640646978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:34:58,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 03:34:58,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16] total 19 [2022-03-20 03:34:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353741674] [2022-03-20 03:34:58,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 03:34:58,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 03:34:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 03:34:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=470, Unknown=2, NotChecked=0, Total=552 [2022-03-20 03:34:58,826 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-20 03:34:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:59,517 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-03-20 03:34:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-20 03:34:59,518 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2022-03-20 03:34:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:59,520 INFO L225 Difference]: With dead ends: 55 [2022-03-20 03:34:59,520 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 03:34:59,521 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=296, Invalid=1682, Unknown=2, NotChecked=0, Total=1980 [2022-03-20 03:34:59,522 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:34:59,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 74 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 216 Invalid, 0 Unknown, 82 Unchecked, 0.2s Time] [2022-03-20 03:34:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 03:34:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-03-20 03:34:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 03:34:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2022-03-20 03:34:59,528 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 29 [2022-03-20 03:34:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:59,528 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2022-03-20 03:34:59,529 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-20 03:34:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2022-03-20 03:34:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 03:34:59,530 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:59,530 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:59,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 03:34:59,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-20 03:34:59,731 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash 483843889, now seen corresponding path program 1 times [2022-03-20 03:34:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:59,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015708877] [2022-03-20 03:34:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:34:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:34:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:34:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 03:34:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-20 03:34:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:59,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015708877] [2022-03-20 03:34:59,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015708877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:34:59,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821570316] [2022-03-20 03:34:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:59,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:59,854 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) [2022-03-20 03:34:59,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 03:34:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:59,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-20 03:34:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:35:00,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-20 03:35:00,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-20 03:35:00,881 INFO L356 Elim1Store]: treesize reduction 39, result has 39.1 percent of original size [2022-03-20 03:35:00,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2022-03-20 03:35:04,203 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-20 03:35:04,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2022-03-20 03:35:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 03:35:04,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:35:08,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821570316] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:35:08,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 03:35:08,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 19] total 22 [2022-03-20 03:35:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746171000] [2022-03-20 03:35:08,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 03:35:08,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-20 03:35:08,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:35:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-20 03:35:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=640, Unknown=3, NotChecked=0, Total=756 [2022-03-20 03:35:08,805 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-03-20 03:35:09,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:35:09,268 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2022-03-20 03:35:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-20 03:35:09,269 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45 [2022-03-20 03:35:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:35:09,270 INFO L225 Difference]: With dead ends: 66 [2022-03-20 03:35:09,270 INFO L226 Difference]: Without dead ends: 66 [2022-03-20 03:35:09,270 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=218, Invalid=1419, Unknown=3, NotChecked=0, Total=1640 [2022-03-20 03:35:09,271 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:35:09,272 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 160 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 169 Invalid, 0 Unknown, 146 Unchecked, 0.1s Time] [2022-03-20 03:35:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-20 03:35:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2022-03-20 03:35:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-20 03:35:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-03-20 03:35:09,280 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 45 [2022-03-20 03:35:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:35:09,280 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-03-20 03:35:09,280 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-03-20 03:35:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-03-20 03:35:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 03:35:09,281 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:35:09,282 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:35:09,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 03:35:09,491 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:09,492 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:35:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:35:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -926913650, now seen corresponding path program 2 times [2022-03-20 03:35:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:35:09,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316513282] [2022-03-20 03:35:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:35:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:35:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:35:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:35:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:35:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:35:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 03:35:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 03:35:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 03:35:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-20 03:35:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:35:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316513282] [2022-03-20 03:35:09,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316513282] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:35:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176898480] [2022-03-20 03:35:09,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 03:35:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:35:09,653 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) [2022-03-20 03:35:09,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 03:35:09,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 03:35:09,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:35:09,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-20 03:35:09,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:35:09,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-20 03:35:09,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-20 03:35:14,254 INFO L356 Elim1Store]: treesize reduction 39, result has 39.1 percent of original size [2022-03-20 03:35:14,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2022-03-20 03:35:19,710 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-20 03:35:19,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2022-03-20 03:35:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 38 refuted. 4 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-20 03:35:19,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:35:28,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176898480] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:35:28,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 03:35:28,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 22] total 25 [2022-03-20 03:35:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756903249] [2022-03-20 03:35:28,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 03:35:28,393 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 03:35:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:35:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 03:35:28,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=843, Unknown=11, NotChecked=0, Total=992 [2022-03-20 03:35:28,394 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 25 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 10 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-03-20 03:35:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:35:31,819 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2022-03-20 03:35:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-20 03:35:31,820 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 10 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 61 [2022-03-20 03:35:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:35:31,821 INFO L225 Difference]: With dead ends: 86 [2022-03-20 03:35:31,821 INFO L226 Difference]: Without dead ends: 86 [2022-03-20 03:35:31,822 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=266, Invalid=1883, Unknown=13, NotChecked=0, Total=2162 [2022-03-20 03:35:31,823 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 52 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:35:31,823 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 193 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 246 Invalid, 0 Unknown, 168 Unchecked, 0.2s Time] [2022-03-20 03:35:31,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-03-20 03:35:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2022-03-20 03:35:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 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) [2022-03-20 03:35:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2022-03-20 03:35:31,830 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 61 [2022-03-20 03:35:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:35:31,830 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2022-03-20 03:35:31,831 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 10 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-03-20 03:35:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2022-03-20 03:35:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 03:35:31,832 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:35:31,832 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:35:31,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-20 03:35:32,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:32,048 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:35:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:35:32,048 INFO L85 PathProgramCache]: Analyzing trace with hash -635325717, now seen corresponding path program 3 times [2022-03-20 03:35:32,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:35:32,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450329902] [2022-03-20 03:35:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:35:32,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:35:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:35:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:35:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:35:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:35:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 03:35:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 03:35:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 03:35:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-20 03:35:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 03:35:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-20 03:35:32,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:35:32,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450329902] [2022-03-20 03:35:32,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450329902] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:35:32,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832826011] [2022-03-20 03:35:32,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 03:35:32,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:32,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:35:32,197 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) [2022-03-20 03:35:32,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 03:35:32,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-20 03:35:32,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:35:32,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-20 03:35:32,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:35:32,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-20 03:35:32,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-20 03:35:32,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-20 03:35:33,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95 [2022-03-20 03:35:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-20 03:35:33,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-20 03:35:33,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-20 03:35:33,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 143 [2022-03-20 03:35:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-20 03:35:33,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:35:36,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-03-20 03:35:36,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-20 03:35:36,212 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-20 03:35:36,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-03-20 03:35:36,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-20 03:35:36,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 4 [2022-03-20 03:35:36,263 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-20 03:35:36,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-03-20 03:35:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-20 03:35:36,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832826011] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:35:36,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:35:36,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 21] total 43 [2022-03-20 03:35:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177925174] [2022-03-20 03:35:36,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:35:36,629 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-20 03:35:36,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:35:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-20 03:35:36,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1542, Unknown=0, NotChecked=0, Total=1806 [2022-03-20 03:35:36,630 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-20 03:35:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:35:40,576 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2022-03-20 03:35:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-20 03:35:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 77 [2022-03-20 03:35:40,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:35:40,578 INFO L225 Difference]: With dead ends: 136 [2022-03-20 03:35:40,578 INFO L226 Difference]: Without dead ends: 136 [2022-03-20 03:35:40,580 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=823, Invalid=5497, Unknown=0, NotChecked=0, Total=6320 [2022-03-20 03:35:40,581 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 138 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 03:35:40,581 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 110 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 993 Invalid, 0 Unknown, 125 Unchecked, 1.3s Time] [2022-03-20 03:35:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-03-20 03:35:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2022-03-20 03:35:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.0777777777777777) internal successors, (97), 92 states have internal predecessors, (97), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-20 03:35:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2022-03-20 03:35:40,591 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 77 [2022-03-20 03:35:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:35:40,592 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2022-03-20 03:35:40,592 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-20 03:35:40,592 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2022-03-20 03:35:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-20 03:35:40,593 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:35:40,594 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:35:40,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 03:35:40,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:40,799 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:35:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:35:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 994030920, now seen corresponding path program 4 times [2022-03-20 03:35:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:35:40,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922910848] [2022-03-20 03:35:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:35:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:35:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:35:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:35:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:35:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:35:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 03:35:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 03:35:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 03:35:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-20 03:35:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 03:35:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 03:35:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-20 03:35:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-20 03:35:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:35:40,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922910848] [2022-03-20 03:35:40,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922910848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:35:40,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626316915] [2022-03-20 03:35:40,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 03:35:40,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:35:40,965 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) [2022-03-20 03:35:40,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 03:35:41,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 03:35:41,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:35:41,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 03:35:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:35:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-20 03:35:41,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:35:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-20 03:35:41,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626316915] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:35:41,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:35:41,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2022-03-20 03:35:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319261331] [2022-03-20 03:35:41,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:35:41,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 03:35:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:35:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 03:35:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2022-03-20 03:35:41,939 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-03-20 03:35:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:35:43,214 INFO L93 Difference]: Finished difference Result 159 states and 179 transitions. [2022-03-20 03:35:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 03:35:43,214 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 93 [2022-03-20 03:35:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:35:43,215 INFO L225 Difference]: With dead ends: 159 [2022-03-20 03:35:43,215 INFO L226 Difference]: Without dead ends: 159 [2022-03-20 03:35:43,216 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2022-03-20 03:35:43,216 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 205 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 03:35:43,217 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 74 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 03:35:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-20 03:35:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2022-03-20 03:35:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-20 03:35:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-03-20 03:35:43,227 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 93 [2022-03-20 03:35:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:35:43,227 INFO L478 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-03-20 03:35:43,227 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-03-20 03:35:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-03-20 03:35:43,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-20 03:35:43,229 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:35:43,229 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:35:43,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 03:35:43,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:43,443 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:35:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:35:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1349749463, now seen corresponding path program 5 times [2022-03-20 03:35:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:35:43,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840791923] [2022-03-20 03:35:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:35:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:35:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:35:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:35:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:35:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:35:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 03:35:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 03:35:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 03:35:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 03:35:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 03:35:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 03:35:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-20 03:35:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-20 03:35:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-20 03:35:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-20 03:35:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-20 03:35:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-20 03:35:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-20 03:35:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-20 03:35:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:35:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-20 03:35:43,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:35:43,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840791923] [2022-03-20 03:35:43,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840791923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:35:43,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823656920] [2022-03-20 03:35:43,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 03:35:43,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:35:43,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:35:43,779 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) [2022-03-20 03:35:43,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 03:36:23,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-03-20 03:36:23,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:36:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-20 03:36:23,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:36:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-03-20 03:36:23,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:36:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-20 03:36:24,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823656920] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:36:24,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:36:24,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2022-03-20 03:36:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098911033] [2022-03-20 03:36:24,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:36:24,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-20 03:36:24,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:36:24,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-20 03:36:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2022-03-20 03:36:24,207 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-03-20 03:36:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:36:41,153 INFO L93 Difference]: Finished difference Result 287 states and 339 transitions. [2022-03-20 03:36:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-20 03:36:41,153 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) Word has length 149 [2022-03-20 03:36:41,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:36:41,156 INFO L225 Difference]: With dead ends: 287 [2022-03-20 03:36:41,156 INFO L226 Difference]: Without dead ends: 287 [2022-03-20 03:36:41,157 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=1115, Invalid=2917, Unknown=0, NotChecked=0, Total=4032 [2022-03-20 03:36:41,158 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 597 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 03:36:41,158 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 143 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 03:36:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-20 03:36:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 180. [2022-03-20 03:36:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 134 states have internal predecessors, (135), 36 states have call successors, (36), 11 states have call predecessors, (36), 10 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-20 03:36:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2022-03-20 03:36:41,177 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 149 [2022-03-20 03:36:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:36:41,178 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2022-03-20 03:36:41,178 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-03-20 03:36:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2022-03-20 03:36:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-03-20 03:36:41,182 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:36:41,182 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:36:41,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 03:36:41,394 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:36:41,395 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:36:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:36:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1018698857, now seen corresponding path program 6 times [2022-03-20 03:36:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:36:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037089937] [2022-03-20 03:36:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:36:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:36:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:36:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 03:36:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 03:36:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:36:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 03:36:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 03:36:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 03:36:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 03:36:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 03:36:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 03:36:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-20 03:36:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-20 03:36:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-20 03:36:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-20 03:36:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-20 03:36:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-20 03:36:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-20 03:36:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-20 03:36:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-20 03:36:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-20 03:36:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-20 03:36:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-20 03:36:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-20 03:36:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-20 03:36:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-20 03:36:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-20 03:36:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-20 03:36:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-20 03:36:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-20 03:36:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-20 03:36:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-20 03:36:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-20 03:36:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-20 03:36:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-20 03:36:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:36:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3546 backedges. 6 proven. 1770 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-03-20 03:36:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:36:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037089937] [2022-03-20 03:36:42,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037089937] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:36:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843661138] [2022-03-20 03:36:42,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 03:36:42,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:36:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:36:42,326 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) [2022-03-20 03:36:42,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process