/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/nla-digbench/hard2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 05:49:14,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 05:49:14,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 05:49:14,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 05:49:14,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 05:49:14,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 05:49:14,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 05:49:14,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 05:49:14,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 05:49:14,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 05:49:14,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 05:49:14,935 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 05:49:14,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 05:49:14,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 05:49:14,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 05:49:14,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 05:49:14,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 05:49:14,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 05:49:14,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 05:49:14,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 05:49:14,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 05:49:14,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 05:49:14,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 05:49:14,939 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 05:49:14,939 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 05:49:15,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 05:49:15,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 05:49:15,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 05:49:15,181 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 05:49:15,182 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 05:49:15,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/hard2.c [2022-04-06 05:49:15,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3c10c63/d0e7d914c8344160a2e2eecf16b67150/FLAG78c7b938e [2022-04-06 05:49:15,583 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 05:49:15,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard2.c [2022-04-06 05:49:15,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3c10c63/d0e7d914c8344160a2e2eecf16b67150/FLAG78c7b938e [2022-04-06 05:49:15,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3c10c63/d0e7d914c8344160a2e2eecf16b67150 [2022-04-06 05:49:15,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 05:49:15,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 05:49:15,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 05:49:15,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 05:49:15,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 05:49:15,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c681bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15, skipping insertion in model container [2022-04-06 05:49:15,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 05:49:15,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 05:49:15,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard2.c[526,539] [2022-04-06 05:49:15,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 05:49:15,802 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 05:49:15,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/hard2.c[526,539] [2022-04-06 05:49:15,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 05:49:15,824 INFO L208 MainTranslator]: Completed translation [2022-04-06 05:49:15,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15 WrapperNode [2022-04-06 05:49:15,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 05:49:15,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 05:49:15,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 05:49:15,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 05:49:15,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 05:49:15,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 05:49:15,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 05:49:15,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 05:49:15,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (1/1) ... [2022-04-06 05:49:15,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 05:49:15,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:15,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 05:49:15,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 05:49:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 05:49:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 05:49:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 05:49:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 05:49:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 05:49:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 05:49:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 05:49:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 05:49:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 05:49:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 05:49:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 05:49:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 05:49:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 05:49:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 05:49:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 05:49:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 05:49:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 05:49:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 05:49:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 05:49:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 05:49:15,969 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 05:49:15,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 05:49:16,073 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 05:49:16,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 05:49:16,079 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 05:49:16,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:49:16 BoogieIcfgContainer [2022-04-06 05:49:16,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 05:49:16,081 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 05:49:16,082 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 05:49:16,082 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 05:49:16,085 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:49:16" (1/1) ... [2022-04-06 05:49:16,087 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 05:49:16,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 05:49:16 BasicIcfg [2022-04-06 05:49:16,116 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 05:49:16,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 05:49:16,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 05:49:16,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 05:49:16,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 05:49:15" (1/4) ... [2022-04-06 05:49:16,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60058fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:49:16, skipping insertion in model container [2022-04-06 05:49:16,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:49:15" (2/4) ... [2022-04-06 05:49:16,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60058fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:49:16, skipping insertion in model container [2022-04-06 05:49:16,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:49:16" (3/4) ... [2022-04-06 05:49:16,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60058fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:49:16, skipping insertion in model container [2022-04-06 05:49:16,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 05:49:16" (4/4) ... [2022-04-06 05:49:16,136 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2.cJordan [2022-04-06 05:49:16,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 05:49:16,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 05:49:16,223 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 05:49:16,231 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 05:49:16,232 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 05:49:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 05:49:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 05:49:16,263 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:16,264 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:16,265 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1059151250, now seen corresponding path program 1 times [2022-04-06 05:49:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:16,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041029836] [2022-04-06 05:49:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:16,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:49:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 05:49:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:16,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041029836] [2022-04-06 05:49:16,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041029836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:49:16,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:49:16,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 05:49:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445704546] [2022-04-06 05:49:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:49:16,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 05:49:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:16,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 05:49:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 05:49:16,512 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:49:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:16,752 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2022-04-06 05:49:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 05:49:16,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2022-04-06 05:49:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:16,772 INFO L225 Difference]: With dead ends: 43 [2022-04-06 05:49:16,772 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 05:49:16,774 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 05:49:16,783 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:16,785 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 48 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 05:49:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 05:49:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-04-06 05:49:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 05:49:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-04-06 05:49:16,832 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 11 [2022-04-06 05:49:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:16,832 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-04-06 05:49:16,833 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 05:49:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-04-06 05:49:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-06 05:49:16,835 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:16,835 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:16,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 05:49:16,836 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2043934920, now seen corresponding path program 1 times [2022-04-06 05:49:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:16,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692256091] [2022-04-06 05:49:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:16,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:16,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 05:49:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 05:49:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 05:49:16,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:16,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692256091] [2022-04-06 05:49:16,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692256091] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:49:16,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:49:16,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 05:49:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396761248] [2022-04-06 05:49:16,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:49:16,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 05:49:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 05:49:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 05:49:16,940 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 05:49:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:17,113 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-04-06 05:49:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 05:49:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-04-06 05:49:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:17,116 INFO L225 Difference]: With dead ends: 39 [2022-04-06 05:49:17,116 INFO L226 Difference]: Without dead ends: 39 [2022-04-06 05:49:17,120 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 05:49:17,122 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:17,122 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 40 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 05:49:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-06 05:49:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-04-06 05:49:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 05:49:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-04-06 05:49:17,140 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2022-04-06 05:49:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:17,140 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-04-06 05:49:17,141 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 05:49:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-06 05:49:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-06 05:49:17,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:17,142 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:17,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 05:49:17,142 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 106953131, now seen corresponding path program 1 times [2022-04-06 05:49:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:17,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387361475] [2022-04-06 05:49:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:17,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:17,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289957052] [2022-04-06 05:49:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:17,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:17,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 05:49:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:17,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 05:49:17,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 05:49:17,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 05:49:17,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:17,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387361475] [2022-04-06 05:49:17,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:17,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289957052] [2022-04-06 05:49:17,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289957052] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:49:17,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:49:17,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 05:49:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337661193] [2022-04-06 05:49:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:49:17,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 05:49:17,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 05:49:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 05:49:17,390 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 05:49:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:17,465 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2022-04-06 05:49:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 05:49:17,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-04-06 05:49:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:17,467 INFO L225 Difference]: With dead ends: 47 [2022-04-06 05:49:17,467 INFO L226 Difference]: Without dead ends: 46 [2022-04-06 05:49:17,467 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 05:49:17,468 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:17,469 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 05:49:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-06 05:49:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-04-06 05:49:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 05:49:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-04-06 05:49:17,475 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2022-04-06 05:49:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:17,476 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-04-06 05:49:17,476 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 05:49:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-04-06 05:49:17,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 05:49:17,477 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:17,477 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:17,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 05:49:17,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:17,700 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash 606156080, now seen corresponding path program 1 times [2022-04-06 05:49:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:17,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79376600] [2022-04-06 05:49:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:17,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:17,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085820121] [2022-04-06 05:49:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:17,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:17,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:17,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 05:49:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:17,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 05:49:17,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 05:49:17,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 05:49:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:17,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79376600] [2022-04-06 05:49:17,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:17,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085820121] [2022-04-06 05:49:17,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085820121] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:49:17,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:49:17,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 05:49:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786447681] [2022-04-06 05:49:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:49:17,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 05:49:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 05:49:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 05:49:17,940 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 05:49:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:18,001 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-04-06 05:49:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 05:49:18,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-06 05:49:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:18,004 INFO L225 Difference]: With dead ends: 57 [2022-04-06 05:49:18,004 INFO L226 Difference]: Without dead ends: 52 [2022-04-06 05:49:18,005 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 05:49:18,008 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:18,010 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 81 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:49:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-06 05:49:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-04-06 05:49:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 05:49:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-04-06 05:49:18,017 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 28 [2022-04-06 05:49:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:18,018 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-04-06 05:49:18,018 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 05:49:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-04-06 05:49:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 05:49:18,019 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:18,019 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:18,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 05:49:18,219 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,SelfDestructingSolverStorable3 [2022-04-06 05:49:18,220 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 312970699, now seen corresponding path program 1 times [2022-04-06 05:49:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:18,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371979728] [2022-04-06 05:49:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:18,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:18,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654224248] [2022-04-06 05:49:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:18,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:18,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:18,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 05:49:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:18,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 05:49:18,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-06 05:49:18,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:49:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-04-06 05:49:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371979728] [2022-04-06 05:49:18,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654224248] [2022-04-06 05:49:18,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654224248] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 05:49:18,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 05:49:18,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-06 05:49:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740819393] [2022-04-06 05:49:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:49:18,594 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 05:49:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 05:49:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-06 05:49:18,595 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 05:49:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:18,657 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2022-04-06 05:49:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 05:49:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-04-06 05:49:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:18,661 INFO L225 Difference]: With dead ends: 61 [2022-04-06 05:49:18,662 INFO L226 Difference]: Without dead ends: 61 [2022-04-06 05:49:18,663 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 05:49:18,664 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:18,664 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 89 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:49:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-04-06 05:49:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-04-06 05:49:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 17 states have call successors, (17), 8 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 05:49:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2022-04-06 05:49:18,683 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 38 [2022-04-06 05:49:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:18,684 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2022-04-06 05:49:18,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 05:49:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2022-04-06 05:49:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 05:49:18,687 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:18,687 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:18,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 05:49:18,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:18,904 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1500982750, now seen corresponding path program 1 times [2022-04-06 05:49:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:18,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318975922] [2022-04-06 05:49:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:18,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:18,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:18,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104925465] [2022-04-06 05:49:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:18,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:18,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:18,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:18,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 05:49:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:18,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-06 05:49:18,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 05:49:19,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:49:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-06 05:49:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318975922] [2022-04-06 05:49:20,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:20,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104925465] [2022-04-06 05:49:20,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104925465] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:49:20,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:49:20,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-06 05:49:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271407567] [2022-04-06 05:49:20,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 05:49:20,379 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 05:49:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 05:49:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 05:49:20,380 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 05:49:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:22,949 INFO L93 Difference]: Finished difference Result 125 states and 170 transitions. [2022-04-06 05:49:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 05:49:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 58 [2022-04-06 05:49:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:22,952 INFO L225 Difference]: With dead ends: 125 [2022-04-06 05:49:22,953 INFO L226 Difference]: Without dead ends: 119 [2022-04-06 05:49:22,953 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-06 05:49:22,954 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:22,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 149 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 05:49:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-04-06 05:49:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2022-04-06 05:49:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 67 states have internal predecessors, (78), 32 states have call successors, (32), 12 states have call predecessors, (32), 11 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-06 05:49:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2022-04-06 05:49:22,966 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 58 [2022-04-06 05:49:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:22,966 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2022-04-06 05:49:22,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 05:49:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2022-04-06 05:49:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 05:49:22,968 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:22,968 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:22,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-06 05:49:23,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:23,192 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash -781577916, now seen corresponding path program 1 times [2022-04-06 05:49:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:23,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734495189] [2022-04-06 05:49:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:23,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210511344] [2022-04-06 05:49:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:23,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:23,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:23,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 05:49:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:23,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-06 05:49:23,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-04-06 05:49:23,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:49:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-04-06 05:49:23,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734495189] [2022-04-06 05:49:23,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210511344] [2022-04-06 05:49:23,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210511344] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:49:23,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:49:23,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2022-04-06 05:49:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226073110] [2022-04-06 05:49:23,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 05:49:23,978 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 05:49:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 05:49:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-06 05:49:23,979 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-06 05:49:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:24,288 INFO L93 Difference]: Finished difference Result 128 states and 159 transitions. [2022-04-06 05:49:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 05:49:24,289 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 69 [2022-04-06 05:49:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:24,290 INFO L225 Difference]: With dead ends: 128 [2022-04-06 05:49:24,290 INFO L226 Difference]: Without dead ends: 109 [2022-04-06 05:49:24,291 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-04-06 05:49:24,292 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:24,294 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 84 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 05:49:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-04-06 05:49:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2022-04-06 05:49:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 60 states have internal predecessors, (67), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 05:49:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2022-04-06 05:49:24,315 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 69 [2022-04-06 05:49:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:24,316 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2022-04-06 05:49:24,316 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-04-06 05:49:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2022-04-06 05:49:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-06 05:49:24,317 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:24,317 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:24,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 05:49:24,546 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:24,546 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:24,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:24,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1979995209, now seen corresponding path program 1 times [2022-04-06 05:49:24,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:24,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616598296] [2022-04-06 05:49:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:24,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:24,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766035078] [2022-04-06 05:49:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:24,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:24,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:24,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 05:49:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:49:24,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 05:49:24,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-04-06 05:49:24,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 05:49:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:24,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616598296] [2022-04-06 05:49:24,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:24,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766035078] [2022-04-06 05:49:24,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766035078] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 05:49:24,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 05:49:24,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 05:49:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098906016] [2022-04-06 05:49:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 05:49:24,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 05:49:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 05:49:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-06 05:49:24,821 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 05:49:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:49:24,875 INFO L93 Difference]: Finished difference Result 97 states and 116 transitions. [2022-04-06 05:49:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 05:49:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 78 [2022-04-06 05:49:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:49:24,882 INFO L225 Difference]: With dead ends: 97 [2022-04-06 05:49:24,883 INFO L226 Difference]: Without dead ends: 97 [2022-04-06 05:49:24,883 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-04-06 05:49:24,884 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 05:49:24,884 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 91 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 05:49:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-06 05:49:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-04-06 05:49:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.152542372881356) internal successors, (68), 60 states have internal predecessors, (68), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 05:49:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2022-04-06 05:49:24,897 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 78 [2022-04-06 05:49:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:49:24,898 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2022-04-06 05:49:24,898 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 05:49:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2022-04-06 05:49:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-06 05:49:24,904 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:49:24,904 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:49:24,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 05:49:25,120 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:25,121 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:49:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:49:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1650636816, now seen corresponding path program 2 times [2022-04-06 05:49:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:49:25,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974995238] [2022-04-06 05:49:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:49:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:49:25,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:49:25,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300466985] [2022-04-06 05:49:25,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 05:49:25,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:49:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:49:25,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:49:25,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 05:49:25,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 05:49:25,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 05:49:25,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2022-04-06 05:49:25,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:49:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-06 05:49:25,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:49:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 19 refuted. 5 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-06 05:49:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:49:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974995238] [2022-04-06 05:49:50,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:49:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300466985] [2022-04-06 05:49:50,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300466985] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:49:50,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:49:50,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-06 05:49:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165443020] [2022-04-06 05:49:50,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 05:49:50,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 05:49:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:49:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 05:49:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=178, Unknown=2, NotChecked=0, Total=240 [2022-04-06 05:49:50,837 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-04-06 05:50:02,408 WARN L232 SmtUtils]: Spent 11.16s on a formula simplification. DAG size of input: 192 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 05:50:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:50:09,306 INFO L93 Difference]: Finished difference Result 187 states and 252 transitions. [2022-04-06 05:50:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 05:50:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 88 [2022-04-06 05:50:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:50:09,308 INFO L225 Difference]: With dead ends: 187 [2022-04-06 05:50:09,308 INFO L226 Difference]: Without dead ends: 171 [2022-04-06 05:50:09,308 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 158 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=114, Invalid=304, Unknown=2, NotChecked=0, Total=420 [2022-04-06 05:50:09,309 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-04-06 05:50:09,309 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 233 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-04-06 05:50:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-04-06 05:50:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2022-04-06 05:50:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.21875) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 15 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-06 05:50:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-04-06 05:50:09,319 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 88 [2022-04-06 05:50:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:50:09,319 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-04-06 05:50:09,320 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-04-06 05:50:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-04-06 05:50:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-06 05:50:09,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:50:09,322 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:50:09,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 05:50:09,522 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:50:09,523 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:50:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:50:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1538097783, now seen corresponding path program 1 times [2022-04-06 05:50:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:50:09,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853894423] [2022-04-06 05:50:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:50:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:50:09,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:50:09,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946252004] [2022-04-06 05:50:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:50:09,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:50:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:50:09,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:50:09,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 05:50:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 05:50:09,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 05:50:09,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:50:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-06 05:50:09,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:50:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-06 05:50:10,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:50:10,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853894423] [2022-04-06 05:50:10,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:50:10,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946252004] [2022-04-06 05:50:10,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946252004] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:50:10,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:50:10,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-04-06 05:50:10,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813330302] [2022-04-06 05:50:10,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 05:50:10,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 05:50:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:50:10,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 05:50:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-04-06 05:50:10,654 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 7 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-04-06 05:50:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:50:10,967 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2022-04-06 05:50:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 05:50:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 7 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 104 [2022-04-06 05:50:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:50:10,969 INFO L225 Difference]: With dead ends: 174 [2022-04-06 05:50:10,969 INFO L226 Difference]: Without dead ends: 168 [2022-04-06 05:50:10,969 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-04-06 05:50:10,970 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 05:50:10,970 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 254 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 05:50:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-04-06 05:50:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-04-06 05:50:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.21) internal successors, (121), 104 states have internal predecessors, (121), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-06 05:50:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2022-04-06 05:50:10,979 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 104 [2022-04-06 05:50:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:50:10,979 INFO L478 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2022-04-06 05:50:10,979 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 7 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-04-06 05:50:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2022-04-06 05:50:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-04-06 05:50:10,981 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:50:10,981 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:50:11,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 05:50:11,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-06 05:50:11,196 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:50:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:50:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -191386235, now seen corresponding path program 2 times [2022-04-06 05:50:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:50:11,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889128555] [2022-04-06 05:50:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:50:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:50:11,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:50:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605290947] [2022-04-06 05:50:11,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 05:50:11,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:50:11,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:50:11,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:50:11,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 05:50:11,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 05:50:11,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 05:50:11,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 05:50:11,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:50:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 102 proven. 42 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-04-06 05:50:11,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:50:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-06 05:50:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:50:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889128555] [2022-04-06 05:50:11,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:50:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605290947] [2022-04-06 05:50:11,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605290947] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:50:11,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:50:11,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-04-06 05:50:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481936616] [2022-04-06 05:50:11,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 05:50:11,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 05:50:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:50:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 05:50:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-06 05:50:11,744 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 9 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 9 states have call predecessors, (35), 9 states have call successors, (35) [2022-04-06 05:50:11,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:50:11,829 INFO L93 Difference]: Finished difference Result 153 states and 194 transitions. [2022-04-06 05:50:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 05:50:11,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 9 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 9 states have call predecessors, (35), 9 states have call successors, (35) Word has length 117 [2022-04-06 05:50:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:50:11,831 INFO L225 Difference]: With dead ends: 153 [2022-04-06 05:50:11,831 INFO L226 Difference]: Without dead ends: 130 [2022-04-06 05:50:11,832 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 223 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-06 05:50:11,832 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 05:50:11,832 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 217 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 05:50:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-04-06 05:50:11,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-04-06 05:50:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 82 states have internal predecessors, (91), 36 states have call successors, (36), 16 states have call predecessors, (36), 15 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-06 05:50:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 161 transitions. [2022-04-06 05:50:11,839 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 161 transitions. Word has length 117 [2022-04-06 05:50:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:50:11,839 INFO L478 AbstractCegarLoop]: Abstraction has 130 states and 161 transitions. [2022-04-06 05:50:11,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 9 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 9 states have call predecessors, (35), 9 states have call successors, (35) [2022-04-06 05:50:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 161 transitions. [2022-04-06 05:50:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-04-06 05:50:11,840 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:50:11,841 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:50:11,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 05:50:12,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:50:12,056 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:50:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:50:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash 525706014, now seen corresponding path program 3 times [2022-04-06 05:50:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:50:12,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306872794] [2022-04-06 05:50:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:50:12,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:50:12,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:50:12,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714352522] [2022-04-06 05:50:12,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 05:50:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:50:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:50:12,065 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:50:12,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 05:50:12,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-06 05:50:12,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 05:50:12,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 05:50:12,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:50:12,379 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 05:50:12,426 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 05:50:12,509 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 05:50:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-04-06 05:50:12,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:50:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:50:18,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306872794] [2022-04-06 05:50:18,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:50:18,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714352522] [2022-04-06 05:50:18,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714352522] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 05:50:18,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 05:50:18,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-06 05:50:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487517476] [2022-04-06 05:50:18,969 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 05:50:18,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 05:50:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:50:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 05:50:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-04-06 05:50:18,970 INFO L87 Difference]: Start difference. First operand 130 states and 161 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 05:50:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:50:19,060 INFO L93 Difference]: Finished difference Result 134 states and 164 transitions. [2022-04-06 05:50:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 05:50:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 118 [2022-04-06 05:50:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:50:19,062 INFO L225 Difference]: With dead ends: 134 [2022-04-06 05:50:19,062 INFO L226 Difference]: Without dead ends: 132 [2022-04-06 05:50:19,062 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-04-06 05:50:19,063 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 05:50:19,063 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 56 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 05:50:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-06 05:50:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2022-04-06 05:50:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 28 states have call successors, (28), 16 states have call predecessors, (28), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-06 05:50:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-04-06 05:50:19,069 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 118 [2022-04-06 05:50:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:50:19,069 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-04-06 05:50:19,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 05:50:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-04-06 05:50:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-04-06 05:50:19,070 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 05:50:19,070 INFO L499 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:50:19,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 05:50:19,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-06 05:50:19,271 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 05:50:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 05:50:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1635698089, now seen corresponding path program 3 times [2022-04-06 05:50:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 05:50:19,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617881760] [2022-04-06 05:50:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 05:50:19,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 05:50:19,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 05:50:19,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459147350] [2022-04-06 05:50:19,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 05:50:19,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 05:50:19,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 05:50:19,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 05:50:19,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 05:50:19,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-06 05:50:19,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 05:50:19,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 05:50:19,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 05:50:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-04-06 05:50:19,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 05:50:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-04-06 05:50:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 05:50:19,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617881760] [2022-04-06 05:50:19,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 05:50:19,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459147350] [2022-04-06 05:50:19,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459147350] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 05:50:19,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 05:50:19,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-04-06 05:50:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039562976] [2022-04-06 05:50:19,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 05:50:19,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 05:50:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 05:50:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 05:50:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-06 05:50:19,738 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 05:50:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 05:50:19,835 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-04-06 05:50:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 05:50:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 121 [2022-04-06 05:50:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 05:50:19,836 INFO L225 Difference]: With dead ends: 118 [2022-04-06 05:50:19,836 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 05:50:19,836 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-06 05:50:19,837 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 05:50:19,837 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 108 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 05:50:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 05:50:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 05:50:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 05:50:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 05:50:19,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2022-04-06 05:50:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 05:50:19,838 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 05:50:19,838 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 05:50:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 05:50:19,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 05:50:19,841 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 05:50:19,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-04-06 05:50:20,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 05:50:20,066 INFO L719 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 05:50:20,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 05:50:20,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:50:20 BasicIcfg [2022-04-06 05:50:20,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 05:50:20,071 INFO L158 Benchmark]: Toolchain (without parser) took 64469.22ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 129.7MB in the beginning and 113.6MB in the end (delta: 16.1MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. [2022-04-06 05:50:20,071 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 05:50:20,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.74ms. Allocated memory is still 180.4MB. Free memory was 129.7MB in the beginning and 157.2MB in the end (delta: -27.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 05:50:20,072 INFO L158 Benchmark]: Boogie Preprocessor took 30.13ms. Allocated memory is still 180.4MB. Free memory was 157.2MB in the beginning and 155.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 05:50:20,072 INFO L158 Benchmark]: RCFGBuilder took 224.28ms. Allocated memory is still 180.4MB. Free memory was 155.8MB in the beginning and 145.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 05:50:20,073 INFO L158 Benchmark]: IcfgTransformer took 34.22ms. Allocated memory is still 180.4MB. Free memory was 145.6MB in the beginning and 144.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 05:50:20,073 INFO L158 Benchmark]: TraceAbstraction took 63939.16ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 143.9MB in the beginning and 113.6MB in the end (delta: 30.3MB). Peak memory consumption was 79.4MB. Max. memory is 8.0GB. [2022-04-06 05:50:20,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.74ms. Allocated memory is still 180.4MB. Free memory was 129.7MB in the beginning and 157.2MB in the end (delta: -27.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.13ms. Allocated memory is still 180.4MB. Free memory was 157.2MB in the beginning and 155.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 224.28ms. Allocated memory is still 180.4MB. Free memory was 155.8MB in the beginning and 145.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 34.22ms. Allocated memory is still 180.4MB. Free memory was 145.6MB in the beginning and 144.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 63939.16ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 143.9MB in the beginning and 113.6MB in the end (delta: 30.3MB). Peak memory consumption was 79.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.8s, OverallIterations: 13, TraceHistogramMax: 20, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 378 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 1555 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 447 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2186 IncrementalHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 447 mSolverCounterUnsat, 461 mSDtfsCounter, 2186 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1477 GetRequests, 1334 SyntacticMatches, 22 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 23.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=10, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 75 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 867 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1442 ConstructedInterpolants, 0 QuantifiedInterpolants, 15881 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1855 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 6338/6540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-06 05:50:20,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...