/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 00:40:43,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 00:40:43,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 00:40:43,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 00:40:43,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-20 00:40:43,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 00:40:43,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 00:40:43,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 00:40:43,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 00:40:43,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 00:40:43,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 00:40:43,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 00:40:43,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 00:40:43,242 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 00:40:43,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 00:40:43,243 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 00:40:43,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 00:40:43,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 00:40:43,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 00:40:43,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 00:40:43,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 00:40:43,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 00:40:43,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 00:40:43,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:40:43,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 00:40:43,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 00:40:43,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 00:40:43,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 00:40:43,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 00:40:43,246 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 00:40:43,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 00:40:43,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 00:40:43,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 00:40:43,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 00:40:43,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 00:40:43,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 00:40:43,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 00:40:43,507 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 00:40:43,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-03-20 00:40:43,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3582713/833b146886ca46d8932fc9d7b14ba6b1/FLAGdabe73881 [2022-03-20 00:40:43,966 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 00:40:43,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-03-20 00:40:43,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3582713/833b146886ca46d8932fc9d7b14ba6b1/FLAGdabe73881 [2022-03-20 00:40:44,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3582713/833b146886ca46d8932fc9d7b14ba6b1 [2022-03-20 00:40:44,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 00:40:44,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 00:40:44,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 00:40:44,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 00:40:44,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 00:40:44,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44, skipping insertion in model container [2022-03-20 00:40:44,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 00:40:44,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 00:40:44,562 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/egcd2-ll_valuebound2.c[490,503] [2022-03-20 00:40:44,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:40:44,586 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 00:40:44,596 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/egcd2-ll_valuebound2.c[490,503] [2022-03-20 00:40:44,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:40:44,616 INFO L208 MainTranslator]: Completed translation [2022-03-20 00:40:44,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44 WrapperNode [2022-03-20 00:40:44,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 00:40:44,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 00:40:44,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 00:40:44,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 00:40:44,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 00:40:44,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 00:40:44,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 00:40:44,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 00:40:44,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (1/1) ... [2022-03-20 00:40:44,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:40:44,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:44,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 00:40:44,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 00:40:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 00:40:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 00:40:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 00:40:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 00:40:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 00:40:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 00:40:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 00:40:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 00:40:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 00:40:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 00:40:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 00:40:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 00:40:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 00:40:44,772 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 00:40:44,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 00:40:44,897 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 00:40:44,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 00:40:44,903 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 00:40:44,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:40:44 BoogieIcfgContainer [2022-03-20 00:40:44,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 00:40:44,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 00:40:44,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 00:40:44,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 00:40:44,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:40:44" (1/3) ... [2022-03-20 00:40:44,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6b449d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:40:44, skipping insertion in model container [2022-03-20 00:40:44,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:40:44" (2/3) ... [2022-03-20 00:40:44,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6b449d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:40:44, skipping insertion in model container [2022-03-20 00:40:44,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:40:44" (3/3) ... [2022-03-20 00:40:44,918 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-03-20 00:40:44,924 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 00:40:44,924 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 00:40:44,982 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 00:40:45,000 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 00:40:45,000 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 00:40:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 00:40:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-20 00:40:45,034 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:45,035 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:45,036 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:45,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2022-03-20 00:40:45,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:45,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250111005] [2022-03-20 00:40:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 00:40:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 00:40:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 00:40:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 00:40:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 00:40:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 00:40:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 00:40:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-20 00:40:45,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:45,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250111005] [2022-03-20 00:40:45,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250111005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:40:45,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:40:45,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 00:40:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366208797] [2022-03-20 00:40:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:40:45,242 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 00:40:45,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 00:40:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 00:40:45,267 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 00:40:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:45,357 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-03-20 00:40:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 00:40:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-20 00:40:45,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:45,369 INFO L225 Difference]: With dead ends: 73 [2022-03-20 00:40:45,369 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 00:40:45,375 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 00:40:45,383 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:45,384 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:40:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 00:40:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-20 00:40:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 00:40:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-20 00:40:45,424 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-20 00:40:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:45,424 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-20 00:40:45,425 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 00:40:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-20 00:40:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 00:40:45,427 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:45,427 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:45,427 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 00:40:45,428 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2022-03-20 00:40:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:45,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560486112] [2022-03-20 00:40:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:45,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:45,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:45,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850222276] [2022-03-20 00:40:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:45,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:45,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:45,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 00:40:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:45,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 00:40:45,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 00:40:45,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 00:40:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560486112] [2022-03-20 00:40:45,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850222276] [2022-03-20 00:40:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850222276] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:40:45,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:40:45,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-20 00:40:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525611304] [2022-03-20 00:40:45,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:45,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 00:40:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 00:40:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 00:40:45,970 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 00:40:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:46,065 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-20 00:40:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:40:46,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-03-20 00:40:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:46,068 INFO L225 Difference]: With dead ends: 52 [2022-03-20 00:40:46,068 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 00:40:46,068 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-20 00:40:46,069 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:46,070 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 184 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:40:46,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 00:40:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-20 00:40:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 00:40:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-20 00:40:46,082 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-03-20 00:40:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:46,082 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-20 00:40:46,083 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 00:40:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-20 00:40:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 00:40:46,084 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:46,084 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:46,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 00:40:46,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:46,308 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 1 times [2022-03-20 00:40:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:46,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66818470] [2022-03-20 00:40:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:46,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530294468] [2022-03-20 00:40:46,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:46,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:46,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:46,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 00:40:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:46,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 00:40:46,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 00:40:46,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-20 00:40:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:46,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66818470] [2022-03-20 00:40:46,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:46,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530294468] [2022-03-20 00:40:46,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530294468] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 00:40:46,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:40:46,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-20 00:40:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259058494] [2022-03-20 00:40:46,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:40:46,700 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:40:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:40:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-20 00:40:46,702 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 00:40:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:46,762 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-03-20 00:40:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:40:46,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-03-20 00:40:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:46,767 INFO L225 Difference]: With dead ends: 43 [2022-03-20 00:40:46,767 INFO L226 Difference]: Without dead ends: 41 [2022-03-20 00:40:46,768 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:40:46,770 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:46,771 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 146 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:40:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-20 00:40:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-20 00:40:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 00:40:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-03-20 00:40:46,784 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 45 [2022-03-20 00:40:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:46,784 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-03-20 00:40:46,785 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 00:40:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-03-20 00:40:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 00:40:46,786 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:46,789 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:46,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 00:40:47,019 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-20 00:40:47,020 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:47,020 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 1 times [2022-03-20 00:40:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:47,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254871893] [2022-03-20 00:40:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:47,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:47,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515451385] [2022-03-20 00:40:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:47,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:47,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 00:40:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:47,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-20 00:40:47,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-20 00:40:47,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254871893] [2022-03-20 00:40:47,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515451385] [2022-03-20 00:40:47,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515451385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 00:40:47,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:40:47,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-03-20 00:40:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243994118] [2022-03-20 00:40:47,415 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:47,419 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 00:40:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 00:40:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:40:47,421 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 00:40:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:47,597 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-03-20 00:40:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 00:40:47,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2022-03-20 00:40:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:47,605 INFO L225 Difference]: With dead ends: 54 [2022-03-20 00:40:47,605 INFO L226 Difference]: Without dead ends: 52 [2022-03-20 00:40:47,606 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:40:47,611 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:47,612 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 194 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:40:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-20 00:40:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-03-20 00:40:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-20 00:40:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-03-20 00:40:47,636 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 50 [2022-03-20 00:40:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:47,636 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-03-20 00:40:47,637 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 00:40:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-03-20 00:40:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 00:40:47,638 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:47,638 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:47,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:47,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:47,839 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 1 times [2022-03-20 00:40:47,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350433419] [2022-03-20 00:40:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:47,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:47,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:47,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196980989] [2022-03-20 00:40:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:47,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:47,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 00:40:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:47,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-20 00:40:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-03-20 00:40:48,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-20 00:40:48,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350433419] [2022-03-20 00:40:48,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196980989] [2022-03-20 00:40:48,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196980989] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 00:40:48,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:40:48,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-03-20 00:40:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855463010] [2022-03-20 00:40:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:40:48,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 00:40:48,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 00:40:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-03-20 00:40:48,495 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 00:40:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:48,562 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-03-20 00:40:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:40:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2022-03-20 00:40:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:48,565 INFO L225 Difference]: With dead ends: 58 [2022-03-20 00:40:48,565 INFO L226 Difference]: Without dead ends: 56 [2022-03-20 00:40:48,565 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:40:48,566 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 12 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:48,567 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 162 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:40:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-20 00:40:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-03-20 00:40:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-20 00:40:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-20 00:40:48,585 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 55 [2022-03-20 00:40:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:48,586 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-20 00:40:48,586 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 00:40:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-20 00:40:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 00:40:48,590 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:48,590 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:48,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:48,818 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:48,818 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 1 times [2022-03-20 00:40:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264862007] [2022-03-20 00:40:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:48,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:48,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:48,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023480895] [2022-03-20 00:40:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:48,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:48,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:48,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 00:40:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:48,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-20 00:40:48,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-20 00:40:49,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:49,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:49,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264862007] [2022-03-20 00:40:49,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:49,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023480895] [2022-03-20 00:40:49,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023480895] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 00:40:49,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:40:49,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-20 00:40:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425581127] [2022-03-20 00:40:49,193 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:49,193 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 00:40:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 00:40:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 00:40:49,194 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-20 00:40:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:49,291 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-03-20 00:40:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 00:40:49,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2022-03-20 00:40:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:49,298 INFO L225 Difference]: With dead ends: 62 [2022-03-20 00:40:49,298 INFO L226 Difference]: Without dead ends: 60 [2022-03-20 00:40:49,301 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:40:49,302 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:49,302 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 154 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:40:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-20 00:40:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-03-20 00:40:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-20 00:40:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-03-20 00:40:49,317 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 60 [2022-03-20 00:40:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:49,317 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-03-20 00:40:49,318 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-20 00:40:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-03-20 00:40:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 00:40:49,319 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:49,319 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:49,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:49,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:49,532 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:49,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 1 times [2022-03-20 00:40:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:49,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726284604] [2022-03-20 00:40:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:49,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:49,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428843957] [2022-03-20 00:40:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:49,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:49,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:49,550 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:49,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 00:40:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:49,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 00:40:49,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-20 00:40:49,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-20 00:40:49,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:49,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726284604] [2022-03-20 00:40:49,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:49,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428843957] [2022-03-20 00:40:49,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428843957] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:40:49,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:40:49,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-20 00:40:49,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352581438] [2022-03-20 00:40:49,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:49,924 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 00:40:49,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:49,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 00:40:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 00:40:49,925 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-20 00:40:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:50,084 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2022-03-20 00:40:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 00:40:50,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-03-20 00:40:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:50,086 INFO L225 Difference]: With dead ends: 106 [2022-03-20 00:40:50,086 INFO L226 Difference]: Without dead ends: 98 [2022-03-20 00:40:50,087 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:40:50,087 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 32 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:50,088 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 333 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:40:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-20 00:40:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-03-20 00:40:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-20 00:40:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-03-20 00:40:50,109 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-03-20 00:40:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:50,110 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-03-20 00:40:50,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-20 00:40:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-03-20 00:40:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 00:40:50,112 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:50,112 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-03-20 00:40:50,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-20 00:40:50,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:50,327 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 1 times [2022-03-20 00:40:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977596227] [2022-03-20 00:40:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:50,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:50,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462501804] [2022-03-20 00:40:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:50,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:50,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 00:40:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:50,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-20 00:40:50,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-20 00:40:50,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-20 00:40:50,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:50,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977596227] [2022-03-20 00:40:50,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:50,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462501804] [2022-03-20 00:40:50,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462501804] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:40:50,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:40:50,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-03-20 00:40:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038026764] [2022-03-20 00:40:50,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:50,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 00:40:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 00:40:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-20 00:40:50,771 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-03-20 00:40:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:51,020 INFO L93 Difference]: Finished difference Result 132 states and 187 transitions. [2022-03-20 00:40:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 00:40:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2022-03-20 00:40:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:51,024 INFO L225 Difference]: With dead ends: 132 [2022-03-20 00:40:51,024 INFO L226 Difference]: Without dead ends: 128 [2022-03-20 00:40:51,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-03-20 00:40:51,025 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:51,025 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 267 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 00:40:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-20 00:40:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 96. [2022-03-20 00:40:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 53 states have internal predecessors, (60), 36 states have call successors, (36), 9 states have call predecessors, (36), 8 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-20 00:40:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2022-03-20 00:40:51,053 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 75 [2022-03-20 00:40:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:51,053 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2022-03-20 00:40:51,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-03-20 00:40:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2022-03-20 00:40:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 00:40:51,057 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:51,057 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-03-20 00:40:51,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:51,272 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:51,273 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:51,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 2 times [2022-03-20 00:40:51,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:51,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100563800] [2022-03-20 00:40:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:51,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:51,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434448395] [2022-03-20 00:40:51,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 00:40:51,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:51,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:51,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:51,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 00:40:51,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 00:40:51,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:40:51,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-20 00:40:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-20 00:40:51,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100563800] [2022-03-20 00:40:52,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434448395] [2022-03-20 00:40:52,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434448395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 00:40:52,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:40:52,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-03-20 00:40:52,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799135224] [2022-03-20 00:40:52,030 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:52,030 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 00:40:52,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:52,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 00:40:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-20 00:40:52,032 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-20 00:40:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:52,320 INFO L93 Difference]: Finished difference Result 128 states and 169 transitions. [2022-03-20 00:40:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 00:40:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-03-20 00:40:52,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:52,322 INFO L225 Difference]: With dead ends: 128 [2022-03-20 00:40:52,322 INFO L226 Difference]: Without dead ends: 126 [2022-03-20 00:40:52,323 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-20 00:40:52,323 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 35 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:52,324 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 283 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 00:40:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-03-20 00:40:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2022-03-20 00:40:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 67 states have (on average 1.164179104477612) internal successors, (78), 69 states have internal predecessors, (78), 44 states have call successors, (44), 12 states have call predecessors, (44), 11 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-20 00:40:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2022-03-20 00:40:52,341 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 80 [2022-03-20 00:40:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:52,341 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2022-03-20 00:40:52,342 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-20 00:40:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2022-03-20 00:40:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-20 00:40:52,343 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:52,343 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-03-20 00:40:52,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:52,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-20 00:40:52,560 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 3 times [2022-03-20 00:40:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:52,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50566154] [2022-03-20 00:40:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:52,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:52,573 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:52,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654823874] [2022-03-20 00:40:52,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 00:40:52,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:52,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:52,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:52,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 00:40:52,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-20 00:40:52,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:40:52,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-20 00:40:52,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-03-20 00:40:53,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:53,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:53,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50566154] [2022-03-20 00:40:53,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:53,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654823874] [2022-03-20 00:40:53,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654823874] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 00:40:53,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:40:53,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-20 00:40:53,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101224937] [2022-03-20 00:40:53,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:53,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 00:40:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 00:40:53,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:40:53,173 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-03-20 00:40:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:53,391 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2022-03-20 00:40:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 00:40:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 85 [2022-03-20 00:40:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:53,393 INFO L225 Difference]: With dead ends: 132 [2022-03-20 00:40:53,393 INFO L226 Difference]: Without dead ends: 130 [2022-03-20 00:40:53,393 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:40:53,394 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:53,394 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 262 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 00:40:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-03-20 00:40:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2022-03-20 00:40:53,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 72 states have internal predecessors, (81), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-20 00:40:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2022-03-20 00:40:53,412 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 85 [2022-03-20 00:40:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:53,412 INFO L478 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2022-03-20 00:40:53,413 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-03-20 00:40:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2022-03-20 00:40:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-20 00:40:53,413 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:53,414 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-03-20 00:40:53,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:53,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-20 00:40:53,628 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 1 times [2022-03-20 00:40:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:53,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175304981] [2022-03-20 00:40:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:53,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:53,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451450129] [2022-03-20 00:40:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:53,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:53,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:53,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 00:40:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:53,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-20 00:40:53,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-20 00:40:54,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-20 00:40:54,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175304981] [2022-03-20 00:40:54,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451450129] [2022-03-20 00:40:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451450129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:40:54,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:40:54,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-03-20 00:40:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287080251] [2022-03-20 00:40:54,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:54,838 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 00:40:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 00:40:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:40:54,839 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 14 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-20 00:40:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:57,093 INFO L93 Difference]: Finished difference Result 212 states and 299 transitions. [2022-03-20 00:40:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 00:40:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 91 [2022-03-20 00:40:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:57,095 INFO L225 Difference]: With dead ends: 212 [2022-03-20 00:40:57,095 INFO L226 Difference]: Without dead ends: 208 [2022-03-20 00:40:57,096 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2022-03-20 00:40:57,097 INFO L913 BasicCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:57,097 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 595 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 00:40:57,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-03-20 00:40:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2022-03-20 00:40:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 108 states have internal predecessors, (128), 81 states have call successors, (81), 16 states have call predecessors, (81), 15 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-03-20 00:40:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 288 transitions. [2022-03-20 00:40:57,140 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 288 transitions. Word has length 91 [2022-03-20 00:40:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:57,140 INFO L478 AbstractCegarLoop]: Abstraction has 204 states and 288 transitions. [2022-03-20 00:40:57,140 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-20 00:40:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 288 transitions. [2022-03-20 00:40:57,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-20 00:40:57,141 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:57,142 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:57,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:57,354 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-20 00:40:57,355 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:57,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 703654790, now seen corresponding path program 4 times [2022-03-20 00:40:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:57,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132934800] [2022-03-20 00:40:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:57,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367259484] [2022-03-20 00:40:57,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 00:40:57,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:57,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:57,370 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:57,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 00:40:57,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 00:40:57,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:40:57,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 00:40:57,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 00:40:57,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:40:57,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132934800] [2022-03-20 00:40:57,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367259484] [2022-03-20 00:40:57,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367259484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:40:57,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:40:57,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 00:40:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341626105] [2022-03-20 00:40:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:40:57,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:40:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:40:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 00:40:57,565 INFO L87 Difference]: Start difference. First operand 204 states and 288 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-03-20 00:40:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:57,659 INFO L93 Difference]: Finished difference Result 257 states and 360 transitions. [2022-03-20 00:40:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:40:57,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 105 [2022-03-20 00:40:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:57,661 INFO L225 Difference]: With dead ends: 257 [2022-03-20 00:40:57,661 INFO L226 Difference]: Without dead ends: 185 [2022-03-20 00:40:57,662 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-20 00:40:57,663 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:57,663 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 183 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:40:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-03-20 00:40:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2022-03-20 00:40:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 91 states have internal predecessors, (103), 65 states have call successors, (65), 16 states have call predecessors, (65), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-03-20 00:40:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2022-03-20 00:40:57,695 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 105 [2022-03-20 00:40:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:57,696 INFO L478 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2022-03-20 00:40:57,696 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-03-20 00:40:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2022-03-20 00:40:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 00:40:57,697 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:57,697 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:40:57,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:57,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 00:40:57,924 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:57,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 1 times [2022-03-20 00:40:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:57,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742458867] [2022-03-20 00:40:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:57,933 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:57,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884776723] [2022-03-20 00:40:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:57,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:57,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:57,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:57,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 00:40:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:40:57,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 00:40:57,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-03-20 00:40:58,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-03-20 00:40:58,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:58,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742458867] [2022-03-20 00:40:58,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:58,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884776723] [2022-03-20 00:40:58,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884776723] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:40:58,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:40:58,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2022-03-20 00:40:58,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492251364] [2022-03-20 00:40:58,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:58,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 00:40:58,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 00:40:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-03-20 00:40:58,538 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-03-20 00:40:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:40:58,861 INFO L93 Difference]: Finished difference Result 215 states and 287 transitions. [2022-03-20 00:40:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 00:40:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 107 [2022-03-20 00:40:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:40:58,866 INFO L225 Difference]: With dead ends: 215 [2022-03-20 00:40:58,866 INFO L226 Difference]: Without dead ends: 144 [2022-03-20 00:40:58,867 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2022-03-20 00:40:58,868 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 50 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:40:58,868 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 374 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:40:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-03-20 00:40:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2022-03-20 00:40:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.12) internal successors, (84), 76 states have internal predecessors, (84), 53 states have call successors, (53), 14 states have call predecessors, (53), 13 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-20 00:40:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 188 transitions. [2022-03-20 00:40:58,899 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 188 transitions. Word has length 107 [2022-03-20 00:40:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:40:58,901 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 188 transitions. [2022-03-20 00:40:58,902 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-03-20 00:40:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 188 transitions. [2022-03-20 00:40:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-20 00:40:58,903 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:40:58,903 INFO L499 BasicCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-03-20 00:40:58,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-20 00:40:59,120 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-20 00:40:59,120 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:40:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:40:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash 541794983, now seen corresponding path program 2 times [2022-03-20 00:40:59,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:40:59,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256646061] [2022-03-20 00:40:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:40:59,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:40:59,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:40:59,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105867632] [2022-03-20 00:40:59,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 00:40:59,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:40:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:40:59,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:40:59,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 00:40:59,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 00:40:59,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:40:59,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 00:40:59,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:40:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 154 proven. 18 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-03-20 00:40:59,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:40:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-03-20 00:40:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:40:59,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256646061] [2022-03-20 00:40:59,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:40:59,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105867632] [2022-03-20 00:40:59,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105867632] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:40:59,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:40:59,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-20 00:40:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035020141] [2022-03-20 00:40:59,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:40:59,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 00:40:59,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:40:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 00:40:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-20 00:40:59,763 INFO L87 Difference]: Start difference. First operand 142 states and 188 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-03-20 00:41:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:41:00,088 INFO L93 Difference]: Finished difference Result 185 states and 244 transitions. [2022-03-20 00:41:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 00:41:00,088 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 127 [2022-03-20 00:41:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:41:00,092 INFO L225 Difference]: With dead ends: 185 [2022-03-20 00:41:00,092 INFO L226 Difference]: Without dead ends: 146 [2022-03-20 00:41:00,093 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-03-20 00:41:00,093 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 28 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:41:00,094 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 411 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:41:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-03-20 00:41:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2022-03-20 00:41:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 76 states have internal predecessors, (82), 53 states have call successors, (53), 14 states have call predecessors, (53), 13 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-20 00:41:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2022-03-20 00:41:00,123 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 127 [2022-03-20 00:41:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:41:00,124 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2022-03-20 00:41:00,124 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-03-20 00:41:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2022-03-20 00:41:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-20 00:41:00,125 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:41:00,125 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 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] [2022-03-20 00:41:00,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 00:41:00,342 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-20 00:41:00,343 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:41:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:41:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 2 times [2022-03-20 00:41:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:41:00,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402074403] [2022-03-20 00:41:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:41:00,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:41:00,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:41:00,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812320545] [2022-03-20 00:41:00,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 00:41:00,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:41:00,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:41:00,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:41:00,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 00:41:00,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 00:41:00,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:41:00,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 96 conjunts are in the unsatisfiable core [2022-03-20 00:41:00,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:41:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 119 proven. 151 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-03-20 00:41:01,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:41:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2022-03-20 00:41:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:41:02,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402074403] [2022-03-20 00:41:02,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:41:02,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812320545] [2022-03-20 00:41:02,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812320545] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:41:02,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:41:02,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 28 [2022-03-20 00:41:02,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116926972] [2022-03-20 00:41:02,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:41:02,743 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-20 00:41:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:41:02,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-20 00:41:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-03-20 00:41:02,744 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 28 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-03-20 00:41:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:41:04,338 INFO L93 Difference]: Finished difference Result 204 states and 264 transitions. [2022-03-20 00:41:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-20 00:41:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 138 [2022-03-20 00:41:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:41:04,340 INFO L225 Difference]: With dead ends: 204 [2022-03-20 00:41:04,340 INFO L226 Difference]: Without dead ends: 159 [2022-03-20 00:41:04,341 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2022-03-20 00:41:04,341 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 84 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:41:04,341 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 387 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 00:41:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-20 00:41:04,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2022-03-20 00:41:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-20 00:41:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 186 transitions. [2022-03-20 00:41:04,370 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 186 transitions. Word has length 138 [2022-03-20 00:41:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:41:04,371 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 186 transitions. [2022-03-20 00:41:04,371 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-03-20 00:41:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 186 transitions. [2022-03-20 00:41:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-20 00:41:04,372 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:41:04,373 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2022-03-20 00:41:04,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-20 00:41:04,587 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:41:04,587 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:41:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:41:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 75042921, now seen corresponding path program 3 times [2022-03-20 00:41:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:41:04,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024614678] [2022-03-20 00:41:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:41:04,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:41:04,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:41:04,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664179126] [2022-03-20 00:41:04,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 00:41:04,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:41:04,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:41:04,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:41:04,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 00:41:04,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-20 00:41:04,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:41:04,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-20 00:41:04,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:41:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 118 proven. 59 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-03-20 00:41:05,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:41:05,862 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 00:41:06,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:41:06,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024614678] [2022-03-20 00:41:06,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:41:06,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664179126] [2022-03-20 00:41:06,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664179126] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 00:41:06,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:41:06,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-03-20 00:41:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266781566] [2022-03-20 00:41:06,008 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 00:41:06,008 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 00:41:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:41:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 00:41:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-20 00:41:06,009 INFO L87 Difference]: Start difference. First operand 146 states and 186 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-20 00:41:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:41:06,296 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2022-03-20 00:41:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 00:41:06,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 146 [2022-03-20 00:41:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:41:06,298 INFO L225 Difference]: With dead ends: 182 [2022-03-20 00:41:06,298 INFO L226 Difference]: Without dead ends: 180 [2022-03-20 00:41:06,299 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-03-20 00:41:06,299 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:41:06,300 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 170 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 00:41:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-03-20 00:41:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2022-03-20 00:41:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 96 states have (on average 1.0625) internal successors, (102), 96 states have internal predecessors, (102), 64 states have call successors, (64), 19 states have call predecessors, (64), 18 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-03-20 00:41:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2022-03-20 00:41:06,351 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 146 [2022-03-20 00:41:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:41:06,352 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2022-03-20 00:41:06,352 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-20 00:41:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2022-03-20 00:41:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-20 00:41:06,353 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:41:06,353 INFO L499 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-03-20 00:41:06,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-20 00:41:06,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-20 00:41:06,575 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:41:06,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:41:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -162755237, now seen corresponding path program 4 times [2022-03-20 00:41:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:41:06,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351968705] [2022-03-20 00:41:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:41:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:41:06,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:41:06,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895545658] [2022-03-20 00:41:06,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 00:41:06,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:41:06,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:41:06,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:41:06,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 00:41:06,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 00:41:06,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:41:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 00:41:06,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:41:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-03-20 00:41:06,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:41:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 51 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-03-20 00:41:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:41:07,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351968705] [2022-03-20 00:41:07,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:41:07,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895545658] [2022-03-20 00:41:07,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895545658] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:41:07,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:41:07,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-03-20 00:41:07,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124313650] [2022-03-20 00:41:07,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:41:07,313 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 00:41:07,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:41:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 00:41:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-03-20 00:41:07,314 INFO L87 Difference]: Start difference. First operand 179 states and 229 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-03-20 00:41:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:41:07,614 INFO L93 Difference]: Finished difference Result 214 states and 274 transitions. [2022-03-20 00:41:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 00:41:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 151 [2022-03-20 00:41:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:41:07,615 INFO L225 Difference]: With dead ends: 214 [2022-03-20 00:41:07,616 INFO L226 Difference]: Without dead ends: 124 [2022-03-20 00:41:07,616 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-03-20 00:41:07,617 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:41:07,617 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 442 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:41:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-03-20 00:41:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-03-20 00:41:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 40 states have call successors, (40), 15 states have call predecessors, (40), 14 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-20 00:41:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2022-03-20 00:41:07,645 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 151 [2022-03-20 00:41:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:41:07,645 INFO L478 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2022-03-20 00:41:07,645 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-03-20 00:41:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2022-03-20 00:41:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-20 00:41:07,646 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:41:07,646 INFO L499 BasicCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:41:07,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-20 00:41:07,862 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-20 00:41:07,862 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:41:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:41:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2136188073, now seen corresponding path program 5 times [2022-03-20 00:41:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:41:07,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219073445] [2022-03-20 00:41:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:41:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:41:07,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:41:07,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405254962] [2022-03-20 00:41:07,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 00:41:07,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:41:07,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:41:07,879 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 00:41:07,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-20 00:41:07,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-03-20 00:41:07,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:41:07,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-20 00:41:07,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:41:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2022-03-20 00:41:08,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:41:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 84 proven. 62 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-03-20 00:41:08,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:41:08,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219073445] [2022-03-20 00:41:08,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:41:08,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405254962] [2022-03-20 00:41:08,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405254962] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:41:08,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:41:08,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-03-20 00:41:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866612798] [2022-03-20 00:41:08,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:41:08,745 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 00:41:08,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:41:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 00:41:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-03-20 00:41:08,746 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 15 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) [2022-03-20 00:41:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:41:09,052 INFO L93 Difference]: Finished difference Result 128 states and 154 transitions. [2022-03-20 00:41:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 00:41:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 15 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) Word has length 171 [2022-03-20 00:41:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:41:09,053 INFO L225 Difference]: With dead ends: 128 [2022-03-20 00:41:09,053 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 00:41:09,054 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2022-03-20 00:41:09,054 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:41:09,055 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 521 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 00:41:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 00:41:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 00:41:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 00:41:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 00:41:09,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 171 [2022-03-20 00:41:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:41:09,056 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 00:41:09,056 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 15 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) [2022-03-20 00:41:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 00:41:09,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 00:41:09,059 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 00:41:09,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-20 00:41:09,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-20 00:41:09,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 00:41:29,304 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-20 00:41:29,305 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-20 00:41:29,305 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-20 00:41:29,305 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-03-20 00:41:29,305 INFO L882 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-03-20 00:41:29,305 INFO L882 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-03-20 00:41:29,305 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-03-20 00:41:29,305 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-03-20 00:41:29,305 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 18 74) no Hoare annotation was computed. [2022-03-20 00:41:29,306 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse21 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse11 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse12 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse13 (<= 1 main_~x~0)) (.cse14 (= main_~r~0 1)) (.cse15 (= main_~a~0 main_~y~0)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse19 (< main_~b~0 2)) (.cse2 (<= 1 main_~a~0)) (.cse20 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 .cse21)) (.cse22 (<= 0 main_~c~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse8 (= main_~a~0 main_~x~0)) (.cse9 (<= main_~x~0 2)) (.cse10 (= main_~p~0 1))) (or (and (<= main_~y~0 2) (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~c~0 main_~x~0) .cse9 .cse10) (and .cse11 (<= 1 main_~c~0) .cse12 .cse13 .cse1 .cse14 .cse15 (<= main_~c~0 2) .cse16 (<= main_~a~0 2) .cse17 .cse18 .cse19 .cse7) (and .cse11 .cse12 .cse13 .cse1 .cse14 .cse15 .cse16 (= main_~k~0 2) .cse20 .cse17 .cse18 .cse19 .cse7) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse21) .cse0 .cse1 .cse2 .cse22 .cse3 .cse4 .cse20 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse22 .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse9 .cse10)))) [2022-03-20 00:41:29,306 INFO L878 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse21 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse11 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse14 (* main_~y~0 main_~s~0)) (.cse12 (<= 1 main_~x~0)) (.cse13 (= main_~r~0 1)) (.cse15 (= main_~a~0 main_~y~0)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse19 (< main_~b~0 2)) (.cse2 (<= 1 main_~a~0)) (.cse20 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 .cse21)) (.cse22 (<= 0 main_~c~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse8 (= main_~a~0 main_~x~0)) (.cse9 (<= main_~x~0 2)) (.cse10 (= main_~p~0 1))) (or (and (<= main_~y~0 2) (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~c~0 main_~x~0) .cse9 .cse10) (and .cse11 (<= 1 main_~c~0) .cse12 .cse1 .cse13 (= (+ main_~x~0 .cse14) main_~b~0) .cse15 (<= main_~c~0 2) .cse16 (<= main_~a~0 2) .cse17 .cse18 .cse19 .cse7) (and .cse11 (= main_~b~0 (+ (* main_~q~0 main_~x~0) .cse14)) .cse12 .cse1 .cse13 .cse15 .cse16 (= main_~k~0 2) .cse20 .cse17 .cse18 .cse19 .cse7) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse21) .cse0 .cse1 .cse2 .cse22 .cse3 .cse4 .cse20 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse22 .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse9 .cse10)))) [2022-03-20 00:41:29,306 INFO L878 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse21 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse11 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse14 (* main_~y~0 main_~s~0)) (.cse12 (<= 1 main_~x~0)) (.cse13 (= main_~r~0 1)) (.cse15 (= main_~a~0 main_~y~0)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse19 (< main_~b~0 2)) (.cse2 (<= 1 main_~a~0)) (.cse20 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 .cse21)) (.cse22 (<= 0 main_~c~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse8 (= main_~a~0 main_~x~0)) (.cse9 (<= main_~x~0 2)) (.cse10 (= main_~p~0 1))) (or (and (<= main_~y~0 2) (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~c~0 main_~x~0) .cse9 .cse10) (and .cse11 (<= 1 main_~c~0) .cse12 .cse1 .cse13 (= (+ main_~x~0 .cse14) main_~b~0) .cse15 (<= main_~c~0 2) .cse16 (<= main_~a~0 2) .cse17 .cse18 .cse19 .cse7) (and .cse11 (= main_~b~0 (+ (* main_~q~0 main_~x~0) .cse14)) .cse12 .cse1 .cse13 .cse15 .cse16 (= main_~k~0 2) .cse20 .cse17 .cse18 .cse19 .cse7) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse21) .cse0 .cse1 .cse2 .cse22 .cse3 .cse4 .cse20 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse22 .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse9 .cse10)))) [2022-03-20 00:41:29,306 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 18 74) no Hoare annotation was computed. [2022-03-20 00:41:29,306 INFO L882 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-03-20 00:41:29,306 INFO L878 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (or (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (= main_~b~0 0)) (<= 1 main_~y~0)) [2022-03-20 00:41:29,306 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~a~0) (<= 0 main_~c~0) (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (< main_~c~0 main_~b~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) [2022-03-20 00:41:29,306 INFO L878 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~a~0) (<= 0 main_~c~0) (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (< main_~c~0 main_~b~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) [2022-03-20 00:41:29,307 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 74) the Hoare annotation is: true [2022-03-20 00:41:29,307 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-03-20 00:41:29,307 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-20 00:41:29,307 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-20 00:41:29,307 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-20 00:41:29,307 INFO L882 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-03-20 00:41:29,307 INFO L882 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-03-20 00:41:29,307 INFO L878 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse21 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse11 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse14 (* main_~y~0 main_~s~0)) (.cse12 (<= 1 main_~x~0)) (.cse13 (= main_~r~0 1)) (.cse15 (= main_~a~0 main_~y~0)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse19 (< main_~b~0 2)) (.cse2 (<= 1 main_~a~0)) (.cse20 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 .cse21)) (.cse22 (<= 0 main_~c~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse8 (= main_~a~0 main_~x~0)) (.cse9 (<= main_~x~0 2)) (.cse10 (= main_~p~0 1))) (or (and (<= main_~y~0 2) (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~c~0 main_~x~0) .cse9 .cse10) (and .cse11 (<= 1 main_~c~0) .cse12 .cse1 .cse13 (= (+ main_~x~0 .cse14) main_~b~0) .cse15 (<= main_~c~0 2) .cse16 (<= main_~a~0 2) .cse17 .cse18 .cse19 .cse7) (and .cse11 (= main_~b~0 (+ (* main_~q~0 main_~x~0) .cse14)) .cse12 .cse1 .cse13 .cse15 .cse16 (= main_~k~0 2) .cse20 .cse17 .cse18 .cse19 .cse7) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse21) .cse0 .cse1 .cse2 .cse22 .cse3 .cse4 .cse20 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse22 .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse9 .cse10)))) [2022-03-20 00:41:29,307 INFO L878 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse21 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse11 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse14 (* main_~y~0 main_~s~0)) (.cse12 (<= 1 main_~x~0)) (.cse13 (= main_~r~0 1)) (.cse15 (= main_~a~0 main_~y~0)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse19 (< main_~b~0 2)) (.cse2 (<= 1 main_~a~0)) (.cse20 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 .cse21)) (.cse22 (<= 0 main_~c~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse8 (= main_~a~0 main_~x~0)) (.cse9 (<= main_~x~0 2)) (.cse10 (= main_~p~0 1))) (or (and (<= main_~y~0 2) (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~c~0 main_~x~0) .cse9 .cse10) (and .cse11 (<= 1 main_~c~0) .cse12 .cse1 .cse13 (= (+ main_~x~0 .cse14) main_~b~0) .cse15 (<= main_~c~0 2) .cse16 (<= main_~a~0 2) .cse17 .cse18 .cse19 .cse7) (and .cse11 (= main_~b~0 (+ (* main_~q~0 main_~x~0) .cse14)) .cse12 .cse1 .cse13 .cse15 .cse16 (= main_~k~0 2) .cse20 .cse17 .cse18 .cse19 .cse7) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse21) .cse0 .cse1 .cse2 .cse22 .cse3 .cse4 .cse20 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse22 .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse9 .cse10)))) [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L878 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse5 (<= main_~b~0 main_~c~0)) (.cse0 (< main_~b~0 main_~a~0)) (.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 2)) (.cse8 (* main_~b~0 2)) (.cse6 (<= 1 main_~y~0)) (.cse7 (* main_~y~0 main_~s~0)) (.cse3 (= main_~s~0 1)) (.cse4 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse10 (<= 0 main_~c~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse11 (<= main_~x~0 2))) (or (and .cse0 (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) .cse1 .cse2 .cse3 .cse4 (< main_~x~0 main_~y~0) (= (+ main_~q~0 2) 0) .cse5 .cse6) (and (= main_~p~0 0) (= main_~r~0 1) (= (+ main_~x~0 .cse7) main_~b~0) (= main_~a~0 main_~y~0) (< main_~c~0 .cse8) (= main_~b~0 main_~x~0) .cse5 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (= main_~q~0 1) .cse9) (and .cse0 (< (* main_~c~0 2) 2) .cse1 .cse2 (< .cse8 2) .cse4 .cse10 (<= 0 main_~b~0) .cse6 (= (+ (* main_~q~0 main_~x~0) .cse7) 0) .cse11) (and .cse3 .cse4 (<= 1 main_~a~0) .cse10 (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (< main_~c~0 main_~b~0) .cse9 (= main_~a~0 main_~x~0) .cse11 (= main_~p~0 1)))) [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L878 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (and (<= 1 main_~x~0) (<= main_~y~0 2) (= main_~b~0 0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~y~0) (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0)) [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 00:41:29,308 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-03-20 00:41:29,308 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-03-20 00:41:29,311 INFO L719 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:41:29,312 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 00:41:29,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:41:29 BoogieIcfgContainer [2022-03-20 00:41:29,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 00:41:29,329 INFO L158 Benchmark]: Toolchain (without parser) took 44938.00ms. Allocated memory was 180.4MB in the beginning and 288.4MB in the end (delta: 108.0MB). Free memory was 124.3MB in the beginning and 160.6MB in the end (delta: -36.2MB). Peak memory consumption was 140.8MB. Max. memory is 8.0GB. [2022-03-20 00:41:29,330 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 00:41:29,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.60ms. Allocated memory is still 180.4MB. Free memory was 124.2MB in the beginning and 155.8MB in the end (delta: -31.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 00:41:29,330 INFO L158 Benchmark]: Boogie Preprocessor took 24.50ms. Allocated memory is still 180.4MB. Free memory was 155.8MB in the beginning and 154.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 00:41:29,331 INFO L158 Benchmark]: RCFGBuilder took 262.46ms. Allocated memory is still 180.4MB. Free memory was 154.2MB in the beginning and 142.9MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 00:41:29,331 INFO L158 Benchmark]: TraceAbstraction took 44423.33ms. Allocated memory was 180.4MB in the beginning and 288.4MB in the end (delta: 108.0MB). Free memory was 142.3MB in the beginning and 160.6MB in the end (delta: -18.3MB). Peak memory consumption was 158.2MB. Max. memory is 8.0GB. [2022-03-20 00:41:29,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.60ms. Allocated memory is still 180.4MB. Free memory was 124.2MB in the beginning and 155.8MB in the end (delta: -31.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.50ms. Allocated memory is still 180.4MB. Free memory was 155.8MB in the beginning and 154.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 262.46ms. Allocated memory is still 180.4MB. Free memory was 154.2MB in the beginning and 142.9MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 44423.33ms. Allocated memory was 180.4MB in the beginning and 288.4MB in the end (delta: 108.0MB). Free memory was 142.3MB in the beginning and 160.6MB in the end (delta: -18.3MB). Peak memory consumption was 158.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.3s, OverallIterations: 18, TraceHistogramMax: 23, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 618 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 525 mSDsluCounter, 5110 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4253 mSDsCounter, 827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3513 IncrementalHoareTripleChecker+Invalid, 4340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 827 mSolverCounterUnsat, 857 mSDtfsCounter, 3513 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2853 GetRequests, 2538 SyntacticMatches, 19 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=11, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 95 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 193 PreInvPairs, 249 NumberOfFragments, 1890 HoareAnnotationTreeSize, 193 FomulaSimplifications, 2286 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 20 FomulaSimplificationsInter, 7197 FormulaSimplificationTreeSizeReductionInter, 19.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 1642 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2686 ConstructedInterpolants, 0 QuantifiedInterpolants, 9120 SizeOfPredicates, 113 NumberOfNonLiveVariables, 3743 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 29 InterpolantComputations, 4 PerfectInterpolantSequences, 8794/9490 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((y <= 2 && k == 0) && s == 1) && a == y * r + p * x) && 1 <= a) && b == y) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && c == x) && x <= 2) && p == 1) || (((((((((((((a == c + b * k && 1 <= c) && 1 <= x) && a == y * r + p * x) && r == 1) && x + y * s == b) && a == y) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1) && b < 2) && xy == y * x)) || ((((((((((((a == c + b * k && b == q * x + y * s) && 1 <= x) && a == y * r + p * x) && r == 1) && a == y) && x < a) && k == 2) && c + b * 2 <= 2) && 1 <= b) && q == 1) && b < 2) && xy == y * x)) || (((((((((((((k * y * s + q * k * x == y * r + p * x && s == 1) && a == y * r + p * x) && 1 <= a) && 0 <= c) && b == y) && yy == y * y) && c + b * 2 <= 2) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1)) || ((((((((((((s == 1 && a == y * r + p * x) && 0 <= c) && b == y) && k == 1) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x == c + y) && x <= 2) && p == 1) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((b < a && x * 2 + b == y) && 1 <= x) && y <= 2) && s == 1) && a == y * r + p * x) && x < y) && q + 2 == 0) && b <= c) && 1 <= y) || ((((((((((p == 0 && r == 1) && x + y * s == b) && a == y) && c < b * 2) && b == x) && b <= c) && x < a) && a <= 2) && q == 1) && xy == y * x)) || ((((((((((b < a && c * 2 < 2) && 1 <= x) && y <= 2) && b * 2 < 2) && a == y * r + p * x) && 0 <= c) && 0 <= b) && 1 <= y) && q * x + y * s == 0) && x <= 2)) || ((((((((((((s == 1 && a == y * r + p * x) && 1 <= a) && 0 <= c) && b == y) && c + b <= 2) && yy == y * y) && q == 0) && c < b) && xy == y * x) && a == x) && x <= 2) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-03-20 00:41:29,364 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...