/usr/bin/java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 16:25:01,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 16:25:01,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 16:25:01,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 16:25:01,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 16:25:01,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 16:25:01,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 16:25:01,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 16:25:01,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 16:25:01,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 16:25:01,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 16:25:01,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 16:25:01,092 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 16:25:01,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 16:25:01,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 16:25:01,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 16:25:01,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 16:25:01,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 16:25:01,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 16:25:01,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 16:25:01,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 16:25:01,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 16:25:01,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 16:25:01,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 16:25:01,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 16:25:01,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 16:25:01,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 16:25:01,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 16:25:01,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 16:25:01,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 16:25:01,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 16:25:01,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 16:25:01,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 16:25:01,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 16:25:01,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 16:25:01,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 16:25:01,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 16:25:01,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 16:25:01,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 16:25:01,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 16:25:01,135 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 16:25:01,137 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 16:25:01,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 16:25:01,141 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 16:25:01,141 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 16:25:01,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 16:25:01,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 16:25:01,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 16:25:01,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 16:25:01,425 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 16:25:01,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2022-04-15 16:25:01,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f1742cd/f9ff6d8b299c42b2a8aa9e9d57ed42cc/FLAG2fc426ac5 [2022-04-15 16:25:01,785 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 16:25:01,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2022-04-15 16:25:01,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f1742cd/f9ff6d8b299c42b2a8aa9e9d57ed42cc/FLAG2fc426ac5 [2022-04-15 16:25:02,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f1742cd/f9ff6d8b299c42b2a8aa9e9d57ed42cc [2022-04-15 16:25:02,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 16:25:02,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 16:25:02,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 16:25:02,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 16:25:02,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 16:25:02,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41526cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02, skipping insertion in model container [2022-04-15 16:25:02,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 16:25:02,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 16:25:02,461 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-scaling/prodbin-ll_unwindbound50.c[537,550] [2022-04-15 16:25:02,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 16:25:02,499 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 16:25:02,510 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-scaling/prodbin-ll_unwindbound50.c[537,550] [2022-04-15 16:25:02,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 16:25:02,528 INFO L208 MainTranslator]: Completed translation [2022-04-15 16:25:02,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02 WrapperNode [2022-04-15 16:25:02,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 16:25:02,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 16:25:02,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 16:25:02,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 16:25:02,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 16:25:02,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 16:25:02,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 16:25:02,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 16:25:02,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (1/1) ... [2022-04-15 16:25:02,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 16:25:02,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:25:02,589 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) [2022-04-15 16:25:02,615 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 [2022-04-15 16:25:02,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 16:25:02,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 16:25:02,637 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 16:25:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 16:25:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 16:25:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 16:25:02,638 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 16:25:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 16:25:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 16:25:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 16:25:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 16:25:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 16:25:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 16:25:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 16:25:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 16:25:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 16:25:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 16:25:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 16:25:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 16:25:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 16:25:02,704 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 16:25:02,705 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 16:25:02,826 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 16:25:02,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 16:25:02,832 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 16:25:02,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 04:25:02 BoogieIcfgContainer [2022-04-15 16:25:02,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 16:25:02,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 16:25:02,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 16:25:02,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 16:25:02,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 04:25:02" (1/3) ... [2022-04-15 16:25:02,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ede476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 04:25:02, skipping insertion in model container [2022-04-15 16:25:02,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:25:02" (2/3) ... [2022-04-15 16:25:02,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ede476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 04:25:02, skipping insertion in model container [2022-04-15 16:25:02,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 04:25:02" (3/3) ... [2022-04-15 16:25:02,864 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound50.c [2022-04-15 16:25:02,868 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 16:25:02,868 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 16:25:02,928 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 16:25:02,938 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-04-15 16:25:02,939 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 16:25:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 16:25:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-15 16:25:02,971 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:25:02,971 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:25:02,972 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:25:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:25:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1523633710, now seen corresponding path program 1 times [2022-04-15 16:25:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:02,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1846483907] [2022-04-15 16:25:02,993 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 16:25:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1523633710, now seen corresponding path program 2 times [2022-04-15 16:25:02,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:25:02,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381782093] [2022-04-15 16:25:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:25:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:25:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:25:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 16:25:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:25:03,160 INFO L290 TraceCheckUtils]: 0: Hoare triple {42#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-15 16:25:03,160 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-15 16:25:03,160 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #65#return; {33#true} is VALID [2022-04-15 16:25:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-15 16:25:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:25:03,169 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-15 16:25:03,170 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-15 16:25:03,171 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-15 16:25:03,171 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #59#return; {34#false} is VALID [2022-04-15 16:25:03,174 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {42#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 16:25:03,174 INFO L290 TraceCheckUtils]: 1: Hoare triple {42#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-15 16:25:03,174 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-15 16:25:03,174 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #65#return; {33#true} is VALID [2022-04-15 16:25:03,175 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret7 := main(); {33#true} is VALID [2022-04-15 16:25:03,179 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {33#true} is VALID [2022-04-15 16:25:03,179 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {33#true} is VALID [2022-04-15 16:25:03,180 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-15 16:25:03,181 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-15 16:25:03,181 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-15 16:25:03,181 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #59#return; {34#false} is VALID [2022-04-15 16:25:03,181 INFO L290 TraceCheckUtils]: 11: Hoare triple {34#false} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {34#false} is VALID [2022-04-15 16:25:03,182 INFO L290 TraceCheckUtils]: 12: Hoare triple {34#false} assume !true; {34#false} is VALID [2022-04-15 16:25:03,182 INFO L272 TraceCheckUtils]: 13: Hoare triple {34#false} call __VERIFIER_assert((if ~z~0 == ~a~0 * ~b~0 then 1 else 0)); {34#false} is VALID [2022-04-15 16:25:03,182 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-15 16:25:03,182 INFO L290 TraceCheckUtils]: 15: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-15 16:25:03,183 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-15 16:25:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:25:03,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:25:03,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381782093] [2022-04-15 16:25:03,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381782093] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:03,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:03,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 16:25:03,187 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:25:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1846483907] [2022-04-15 16:25:03,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1846483907] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:03,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:03,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 16:25:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462211305] [2022-04-15 16:25:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:25:03,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 16:25:03,195 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:25:03,197 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:03,221 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:03,221 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 16:25:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 16:25:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 16:25:03,242 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:03,373 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-04-15 16:25:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 16:25:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 16:25:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:25:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-04-15 16:25:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-04-15 16:25:03,392 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 66 transitions. [2022-04-15 16:25:03,471 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:03,479 INFO L225 Difference]: With dead ends: 52 [2022-04-15 16:25:03,479 INFO L226 Difference]: Without dead ends: 26 [2022-04-15 16:25:03,482 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 16:25:03,485 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:25:03,486 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:25:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-15 16:25:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-04-15 16:25:03,513 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:25:03,514 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:03,514 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:03,515 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:03,519 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-15 16:25:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-15 16:25:03,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:03,520 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:03,520 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 26 states. [2022-04-15 16:25:03,521 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 26 states. [2022-04-15 16:25:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:03,524 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-15 16:25:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-15 16:25:03,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:03,524 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:03,525 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:25:03,525 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:25:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-15 16:25:03,529 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2022-04-15 16:25:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:25:03,529 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-15 16:25:03,529 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:03,530 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 28 transitions. [2022-04-15 16:25:03,561 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-15 16:25:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-15 16:25:03,562 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:25:03,562 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:25:03,562 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 16:25:03,563 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:25:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:25:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash -991958694, now seen corresponding path program 1 times [2022-04-15 16:25:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:03,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1264962442] [2022-04-15 16:25:03,565 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 16:25:03,565 INFO L85 PathProgramCache]: Analyzing trace with hash -991958694, now seen corresponding path program 2 times [2022-04-15 16:25:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:25:03,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875688468] [2022-04-15 16:25:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:25:03,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:25:03,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 16:25:03,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53894396] [2022-04-15 16:25:03,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 16:25:03,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:25:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:25:03,598 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) [2022-04-15 16:25:03,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 16:25:03,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 16:25:03,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 16:25:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-15 16:25:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:25:03,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 16:25:03,862 INFO L272 TraceCheckUtils]: 0: Hoare triple {251#true} call ULTIMATE.init(); {251#true} is VALID [2022-04-15 16:25:03,865 INFO L290 TraceCheckUtils]: 1: Hoare triple {251#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,866 INFO L290 TraceCheckUtils]: 2: Hoare triple {259#(<= ~counter~0 0)} assume true; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,866 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {259#(<= ~counter~0 0)} {251#true} #65#return; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,867 INFO L272 TraceCheckUtils]: 4: Hoare triple {259#(<= ~counter~0 0)} call #t~ret7 := main(); {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,868 INFO L290 TraceCheckUtils]: 5: Hoare triple {259#(<= ~counter~0 0)} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,868 INFO L272 TraceCheckUtils]: 6: Hoare triple {259#(<= ~counter~0 0)} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,869 INFO L290 TraceCheckUtils]: 7: Hoare triple {259#(<= ~counter~0 0)} ~cond := #in~cond; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,869 INFO L290 TraceCheckUtils]: 8: Hoare triple {259#(<= ~counter~0 0)} assume !(0 == ~cond); {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,870 INFO L290 TraceCheckUtils]: 9: Hoare triple {259#(<= ~counter~0 0)} assume true; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,871 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {259#(<= ~counter~0 0)} {259#(<= ~counter~0 0)} #59#return; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,871 INFO L290 TraceCheckUtils]: 11: Hoare triple {259#(<= ~counter~0 0)} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {259#(<= ~counter~0 0)} is VALID [2022-04-15 16:25:03,872 INFO L290 TraceCheckUtils]: 12: Hoare triple {259#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {293#(<= |main_#t~post6| 0)} is VALID [2022-04-15 16:25:03,873 INFO L290 TraceCheckUtils]: 13: Hoare triple {293#(<= |main_#t~post6| 0)} assume !(#t~post6 < 50);havoc #t~post6; {252#false} is VALID [2022-04-15 16:25:03,873 INFO L272 TraceCheckUtils]: 14: Hoare triple {252#false} call __VERIFIER_assert((if ~z~0 == ~a~0 * ~b~0 then 1 else 0)); {252#false} is VALID [2022-04-15 16:25:03,874 INFO L290 TraceCheckUtils]: 15: Hoare triple {252#false} ~cond := #in~cond; {252#false} is VALID [2022-04-15 16:25:03,874 INFO L290 TraceCheckUtils]: 16: Hoare triple {252#false} assume 0 == ~cond; {252#false} is VALID [2022-04-15 16:25:03,874 INFO L290 TraceCheckUtils]: 17: Hoare triple {252#false} assume !false; {252#false} is VALID [2022-04-15 16:25:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:25:03,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 16:25:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:25:03,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875688468] [2022-04-15 16:25:03,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 16:25:03,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53894396] [2022-04-15 16:25:03,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53894396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:03,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:03,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 16:25:03,878 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:25:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1264962442] [2022-04-15 16:25:03,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1264962442] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:03,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:03,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 16:25:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653062425] [2022-04-15 16:25:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:25:03,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-15 16:25:03,882 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:25:03,883 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 16:25:03,902 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:03,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-15 16:25:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-15 16:25:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 16:25:03,904 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 16:25:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:03,982 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-15 16:25:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-15 16:25:03,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-15 16:25:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:25:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 16:25:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-04-15 16:25:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 16:25:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-04-15 16:25:04,000 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 37 transitions. [2022-04-15 16:25:04,034 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:04,036 INFO L225 Difference]: With dead ends: 34 [2022-04-15 16:25:04,036 INFO L226 Difference]: Without dead ends: 27 [2022-04-15 16:25:04,038 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 16:25:04,040 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:25:04,045 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:25:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-15 16:25:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-15 16:25:04,067 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:25:04,067 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:04,068 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:04,069 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:04,072 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-04-15 16:25:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-15 16:25:04,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:04,073 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:04,073 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-15 16:25:04,076 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-15 16:25:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:04,080 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-04-15 16:25:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-15 16:25:04,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:04,080 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:04,081 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:25:04,081 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:25:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:25:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-04-15 16:25:04,083 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2022-04-15 16:25:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:25:04,083 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-04-15 16:25:04,084 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 16:25:04,084 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 30 transitions. [2022-04-15 16:25:04,113 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-15 16:25:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-15 16:25:04,115 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:25:04,115 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:25:04,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 16:25:04,338 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:25:04,339 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:25:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:25:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash -990171234, now seen corresponding path program 1 times [2022-04-15 16:25:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:04,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [559414489] [2022-04-15 16:25:04,340 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 16:25:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -990171234, now seen corresponding path program 2 times [2022-04-15 16:25:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:25:04,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160838729] [2022-04-15 16:25:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:25:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:25:04,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 16:25:04,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156050503] [2022-04-15 16:25:04,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 16:25:04,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:25:04,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:25:04,359 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) [2022-04-15 16:25:04,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 16:25:04,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 16:25:04,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 16:25:04,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-15 16:25:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:25:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 16:25:04,567 INFO L272 TraceCheckUtils]: 0: Hoare triple {484#true} call ULTIMATE.init(); {484#true} is VALID [2022-04-15 16:25:04,567 INFO L290 TraceCheckUtils]: 1: Hoare triple {484#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {484#true} is VALID [2022-04-15 16:25:04,568 INFO L290 TraceCheckUtils]: 2: Hoare triple {484#true} assume true; {484#true} is VALID [2022-04-15 16:25:04,568 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {484#true} {484#true} #65#return; {484#true} is VALID [2022-04-15 16:25:04,568 INFO L272 TraceCheckUtils]: 4: Hoare triple {484#true} call #t~ret7 := main(); {484#true} is VALID [2022-04-15 16:25:04,568 INFO L290 TraceCheckUtils]: 5: Hoare triple {484#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {484#true} is VALID [2022-04-15 16:25:04,569 INFO L272 TraceCheckUtils]: 6: Hoare triple {484#true} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {484#true} is VALID [2022-04-15 16:25:04,569 INFO L290 TraceCheckUtils]: 7: Hoare triple {484#true} ~cond := #in~cond; {484#true} is VALID [2022-04-15 16:25:04,569 INFO L290 TraceCheckUtils]: 8: Hoare triple {484#true} assume !(0 == ~cond); {484#true} is VALID [2022-04-15 16:25:04,569 INFO L290 TraceCheckUtils]: 9: Hoare triple {484#true} assume true; {484#true} is VALID [2022-04-15 16:25:04,569 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {484#true} {484#true} #59#return; {484#true} is VALID [2022-04-15 16:25:04,572 INFO L290 TraceCheckUtils]: 11: Hoare triple {484#true} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {522#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-15 16:25:04,573 INFO L290 TraceCheckUtils]: 12: Hoare triple {522#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {522#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-15 16:25:04,575 INFO L290 TraceCheckUtils]: 13: Hoare triple {522#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} assume !!(#t~post6 < 50);havoc #t~post6; {522#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-15 16:25:04,576 INFO L272 TraceCheckUtils]: 14: Hoare triple {522#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {532#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 16:25:04,577 INFO L290 TraceCheckUtils]: 15: Hoare triple {532#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {536#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 16:25:04,577 INFO L290 TraceCheckUtils]: 16: Hoare triple {536#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {485#false} is VALID [2022-04-15 16:25:04,577 INFO L290 TraceCheckUtils]: 17: Hoare triple {485#false} assume !false; {485#false} is VALID [2022-04-15 16:25:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:25:04,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 16:25:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:25:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160838729] [2022-04-15 16:25:04,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 16:25:04,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156050503] [2022-04-15 16:25:04,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156050503] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:04,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:04,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 16:25:04,579 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:25:04,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [559414489] [2022-04-15 16:25:04,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [559414489] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:04,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:04,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 16:25:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087473483] [2022-04-15 16:25:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:25:04,581 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-15 16:25:04,581 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:25:04,581 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:04,596 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:04,596 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 16:25:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 16:25:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 16:25:04,597 INFO L87 Difference]: Start difference. First operand 27 states and 30 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:04,758 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-04-15 16:25:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 16:25:04,759 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-15 16:25:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:25:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-15 16:25:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-15 16:25:04,766 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 43 transitions. [2022-04-15 16:25:04,805 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:04,812 INFO L225 Difference]: With dead ends: 38 [2022-04-15 16:25:04,813 INFO L226 Difference]: Without dead ends: 36 [2022-04-15 16:25:04,813 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 16:25:04,814 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:25:04,814 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:25:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-15 16:25:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-04-15 16:25:04,829 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:25:04,830 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:04,830 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:04,832 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:04,836 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-15 16:25:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-15 16:25:04,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:04,838 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:04,839 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 36 states. [2022-04-15 16:25:04,839 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 36 states. [2022-04-15 16:25:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:04,842 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-15 16:25:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-15 16:25:04,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:04,848 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:04,848 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:25:04,848 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:25:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-15 16:25:04,854 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2022-04-15 16:25:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:25:04,854 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-15 16:25:04,854 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:25:04,855 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 35 transitions. [2022-04-15 16:25:04,891 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-15 16:25:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-15 16:25:04,892 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:25:04,892 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:25:04,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 16:25:05,103 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-15 16:25:05,104 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:25:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:25:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1094479982, now seen corresponding path program 1 times [2022-04-15 16:25:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:05,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [592726165] [2022-04-15 16:25:05,105 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 16:25:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1094479982, now seen corresponding path program 2 times [2022-04-15 16:25:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:25:05,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502172159] [2022-04-15 16:25:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:25:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:25:05,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 16:25:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544453919] [2022-04-15 16:25:05,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 16:25:05,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:25:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:25:05,139 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) [2022-04-15 16:25:05,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 16:25:05,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 16:25:05,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 16:25:05,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-15 16:25:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:25:05,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 16:25:05,296 INFO L272 TraceCheckUtils]: 0: Hoare triple {756#true} call ULTIMATE.init(); {756#true} is VALID [2022-04-15 16:25:05,297 INFO L290 TraceCheckUtils]: 1: Hoare triple {756#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {756#true} is VALID [2022-04-15 16:25:05,297 INFO L290 TraceCheckUtils]: 2: Hoare triple {756#true} assume true; {756#true} is VALID [2022-04-15 16:25:05,297 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {756#true} {756#true} #65#return; {756#true} is VALID [2022-04-15 16:25:05,297 INFO L272 TraceCheckUtils]: 4: Hoare triple {756#true} call #t~ret7 := main(); {756#true} is VALID [2022-04-15 16:25:05,297 INFO L290 TraceCheckUtils]: 5: Hoare triple {756#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {756#true} is VALID [2022-04-15 16:25:05,298 INFO L272 TraceCheckUtils]: 6: Hoare triple {756#true} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {756#true} is VALID [2022-04-15 16:25:05,298 INFO L290 TraceCheckUtils]: 7: Hoare triple {756#true} ~cond := #in~cond; {782#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-15 16:25:05,298 INFO L290 TraceCheckUtils]: 8: Hoare triple {782#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {786#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-15 16:25:05,299 INFO L290 TraceCheckUtils]: 9: Hoare triple {786#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {786#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-15 16:25:05,299 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {786#(not (= |assume_abort_if_not_#in~cond| 0))} {756#true} #59#return; {793#(<= 1 main_~b~0)} is VALID [2022-04-15 16:25:05,300 INFO L290 TraceCheckUtils]: 11: Hoare triple {793#(<= 1 main_~b~0)} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {797#(<= 1 main_~y~0)} is VALID [2022-04-15 16:25:05,300 INFO L290 TraceCheckUtils]: 12: Hoare triple {797#(<= 1 main_~y~0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {797#(<= 1 main_~y~0)} is VALID [2022-04-15 16:25:05,301 INFO L290 TraceCheckUtils]: 13: Hoare triple {797#(<= 1 main_~y~0)} assume !!(#t~post6 < 50);havoc #t~post6; {797#(<= 1 main_~y~0)} is VALID [2022-04-15 16:25:05,301 INFO L272 TraceCheckUtils]: 14: Hoare triple {797#(<= 1 main_~y~0)} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {756#true} is VALID [2022-04-15 16:25:05,301 INFO L290 TraceCheckUtils]: 15: Hoare triple {756#true} ~cond := #in~cond; {756#true} is VALID [2022-04-15 16:25:05,301 INFO L290 TraceCheckUtils]: 16: Hoare triple {756#true} assume !(0 == ~cond); {756#true} is VALID [2022-04-15 16:25:05,301 INFO L290 TraceCheckUtils]: 17: Hoare triple {756#true} assume true; {756#true} is VALID [2022-04-15 16:25:05,302 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {756#true} {797#(<= 1 main_~y~0)} #61#return; {797#(<= 1 main_~y~0)} is VALID [2022-04-15 16:25:05,302 INFO L290 TraceCheckUtils]: 19: Hoare triple {797#(<= 1 main_~y~0)} assume !(0 != ~y~0); {757#false} is VALID [2022-04-15 16:25:05,303 INFO L272 TraceCheckUtils]: 20: Hoare triple {757#false} call __VERIFIER_assert((if ~z~0 == ~a~0 * ~b~0 then 1 else 0)); {757#false} is VALID [2022-04-15 16:25:05,303 INFO L290 TraceCheckUtils]: 21: Hoare triple {757#false} ~cond := #in~cond; {757#false} is VALID [2022-04-15 16:25:05,303 INFO L290 TraceCheckUtils]: 22: Hoare triple {757#false} assume 0 == ~cond; {757#false} is VALID [2022-04-15 16:25:05,303 INFO L290 TraceCheckUtils]: 23: Hoare triple {757#false} assume !false; {757#false} is VALID [2022-04-15 16:25:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:25:05,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 16:25:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:25:05,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502172159] [2022-04-15 16:25:05,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 16:25:05,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544453919] [2022-04-15 16:25:05,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544453919] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:05,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:05,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 16:25:05,304 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:25:05,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [592726165] [2022-04-15 16:25:05,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [592726165] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:25:05,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:25:05,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 16:25:05,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463289823] [2022-04-15 16:25:05,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:25:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-15 16:25:05,306 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:25:05,306 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:25:05,327 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:05,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-15 16:25:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-15 16:25:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-15 16:25:05,328 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:25:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:05,500 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-04-15 16:25:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 16:25:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-15 16:25:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:25:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:25:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-15 16:25:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:25:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-15 16:25:05,512 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 43 transitions. [2022-04-15 16:25:05,542 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:05,543 INFO L225 Difference]: With dead ends: 42 [2022-04-15 16:25:05,543 INFO L226 Difference]: Without dead ends: 35 [2022-04-15 16:25:05,543 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-15 16:25:05,544 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:25:05,544 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 85 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:25:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-15 16:25:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-04-15 16:25:05,574 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:25:05,574 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:05,575 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:05,575 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:05,577 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-04-15 16:25:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-04-15 16:25:05,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:05,578 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:05,579 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 35 states. [2022-04-15 16:25:05,579 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 35 states. [2022-04-15 16:25:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:25:05,584 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-04-15 16:25:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-04-15 16:25:05,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:25:05,585 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:25:05,585 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:25:05,585 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:25:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:25:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-04-15 16:25:05,588 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2022-04-15 16:25:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:25:05,588 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-04-15 16:25:05,589 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:25:05,589 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 36 transitions. [2022-04-15 16:25:05,623 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:25:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-15 16:25:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-15 16:25:05,625 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:25:05,625 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:25:05,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-15 16:25:05,839 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:25:05,839 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:25:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:25:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 584619061, now seen corresponding path program 1 times [2022-04-15 16:25:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:25:05,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [606974333] [2022-04-15 16:25:08,066 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialTermUtils.applyModuloToAllCoefficients(PolynomialTermUtils.java:313) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.AffineTerm.applyModuloToAllCoefficients(AffineTerm.java:208) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.mod(SmtUtils.java:1867) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1454) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1378) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.convertApplicationTerm(SmtUtils.java:1367) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.convertApplicationTerm(Substitution.java:53) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:352) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:285) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.getUpdates(QvasrAbstractor.java:1247) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:110) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:129) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:91) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:246) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:195) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:261) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-15 16:25:08,084 INFO L158 Benchmark]: Toolchain (without parser) took 5860.61ms. Allocated memory was 188.7MB in the beginning and 306.2MB in the end (delta: 117.4MB). Free memory was 133.5MB in the beginning and 277.6MB in the end (delta: -144.1MB). Peak memory consumption was 156.8MB. Max. memory is 8.0GB. [2022-04-15 16:25:08,084 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 16:25:08,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.19ms. Allocated memory was 188.7MB in the beginning and 306.2MB in the end (delta: 117.4MB). Free memory was 133.4MB in the beginning and 276.8MB in the end (delta: -143.5MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-04-15 16:25:08,092 INFO L158 Benchmark]: Boogie Preprocessor took 26.55ms. Allocated memory is still 306.2MB. Free memory was 276.8MB in the beginning and 275.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-15 16:25:08,093 INFO L158 Benchmark]: RCFGBuilder took 283.99ms. Allocated memory is still 306.2MB. Free memory was 275.2MB in the beginning and 263.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-15 16:25:08,093 INFO L158 Benchmark]: TraceAbstraction took 5238.64ms. Allocated memory is still 306.2MB. Free memory was 262.7MB in the beginning and 277.9MB in the end (delta: -15.2MB). Peak memory consumption was 167.3MB. Max. memory is 8.0GB. [2022-04-15 16:25:08,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.19ms. Allocated memory was 188.7MB in the beginning and 306.2MB in the end (delta: 117.4MB). Free memory was 133.4MB in the beginning and 276.8MB in the end (delta: -143.5MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.55ms. Allocated memory is still 306.2MB. Free memory was 276.8MB in the beginning and 275.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 283.99ms. Allocated memory is still 306.2MB. Free memory was 275.2MB in the beginning and 263.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 5238.64ms. Allocated memory is still 306.2MB. Free memory was 262.7MB in the beginning and 277.9MB in the end (delta: -15.2MB). Peak memory consumption was 167.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialTermUtils.applyModuloToAllCoefficients(PolynomialTermUtils.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-15 16:25:08,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...