/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/fermat2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 00:52:51,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 00:52:51,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 00:52:51,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 00:52:51,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 00:52:51,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 00:52:51,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 00:52:51,667 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 00:52:51,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 00:52:51,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 00:52:51,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 00:52:51,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 00:52:51,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 00:52:51,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 00:52:51,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 00:52:51,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 00:52:51,690 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 00:52:51,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 00:52:51,690 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 00:52:51,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 00:52:51,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 00:52:51,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 00:52:51,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:52:51,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 00:52:51,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 00:52:51,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 00:52:51,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 00:52:51,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 00:52:51,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 00:52:51,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 00:52:51,872 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 00:52:51,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2022-03-20 00:52:51,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5123b4739/7f292e622d01492ab8fbe97762c874a1/FLAG97f479400 [2022-03-20 00:52:52,257 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 00:52:52,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2022-03-20 00:52:52,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5123b4739/7f292e622d01492ab8fbe97762c874a1/FLAG97f479400 [2022-03-20 00:52:52,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5123b4739/7f292e622d01492ab8fbe97762c874a1 [2022-03-20 00:52:52,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 00:52:52,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 00:52:52,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 00:52:52,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 00:52:52,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 00:52:52,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bb37b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52, skipping insertion in model container [2022-03-20 00:52:52,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 00:52:52,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 00:52:52,372 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/fermat2-ll_unwindbound10.c[524,537] [2022-03-20 00:52:52,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:52:52,394 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 00:52:52,416 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/fermat2-ll_unwindbound10.c[524,537] [2022-03-20 00:52:52,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:52:52,433 INFO L208 MainTranslator]: Completed translation [2022-03-20 00:52:52,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52 WrapperNode [2022-03-20 00:52:52,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 00:52:52,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 00:52:52,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 00:52:52,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 00:52:52,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 00:52:52,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 00:52:52,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 00:52:52,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 00:52:52,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (1/1) ... [2022-03-20 00:52:52,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:52:52,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:52,500 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 00:52:52,502 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 00:52:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 00:52:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 00:52:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 00:52:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 00:52:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 00:52:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 00:52:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 00:52:52,575 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 00:52:52,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 00:52:52,653 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 00:52:52,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 00:52:52,657 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 00:52:52,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:52:52 BoogieIcfgContainer [2022-03-20 00:52:52,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 00:52:52,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 00:52:52,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 00:52:52,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 00:52:52,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:52:52" (1/3) ... [2022-03-20 00:52:52,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a506253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:52:52, skipping insertion in model container [2022-03-20 00:52:52,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:52:52" (2/3) ... [2022-03-20 00:52:52,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a506253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:52:52, skipping insertion in model container [2022-03-20 00:52:52,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:52:52" (3/3) ... [2022-03-20 00:52:52,662 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound10.c [2022-03-20 00:52:52,665 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 00:52:52,665 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 00:52:52,691 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 00:52:52,695 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 00:52:52,695 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 00:52:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 00:52:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 00:52:52,707 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:52,707 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:52:52,708 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2022-03-20 00:52:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:52,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905111062] [2022-03-20 00:52:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:52,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:52,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054511032] [2022-03-20 00:52:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:52,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:52,816 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 00:52:52,819 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 00:52:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:52:52,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-03-20 00:52:52,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:52:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 00:52:52,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:52:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:52:52,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905111062] [2022-03-20 00:52:52,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:52:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054511032] [2022-03-20 00:52:52,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054511032] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:52:52,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:52:52,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-20 00:52:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942098836] [2022-03-20 00:52:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:52:52,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-20 00:52:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:52:52,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-20 00:52:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-20 00:52:52,958 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 00:52:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:52:52,972 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2022-03-20 00:52:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-20 00:52:52,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-03-20 00:52:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:52:52,978 INFO L225 Difference]: With dead ends: 53 [2022-03-20 00:52:52,978 INFO L226 Difference]: Without dead ends: 25 [2022-03-20 00:52:52,980 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-20 00:52:52,982 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:52:52,983 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:52:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-20 00:52:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-20 00:52:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 00:52:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-03-20 00:52:53,006 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-03-20 00:52:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:52:53,007 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-03-20 00:52:53,007 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 00:52:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-03-20 00:52:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 00:52:53,008 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:53,009 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:52:53,025 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 00:52:53,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-20 00:52:53,225 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 1 times [2022-03-20 00:52:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:53,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710497499] [2022-03-20 00:52:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:53,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:53,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034495268] [2022-03-20 00:52:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:53,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:53,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:53,262 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 00:52:53,263 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 00:52:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:52:53,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 00:52:53,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:52:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:53,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:52:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:52:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710497499] [2022-03-20 00:52:53,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:52:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034495268] [2022-03-20 00:52:53,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034495268] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:52:53,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:52:53,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 00:52:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374372384] [2022-03-20 00:52:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:52:53,432 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 00:52:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:52:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 00:52:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 00:52:53,433 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 00:52:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:52:53,447 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-03-20 00:52:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 00:52:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-03-20 00:52:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:52:53,448 INFO L225 Difference]: With dead ends: 34 [2022-03-20 00:52:53,448 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 00:52:53,449 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 00:52:53,449 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:52:53,450 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:52:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 00:52:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 00:52:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 00:52:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-03-20 00:52:53,454 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-03-20 00:52:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:52:53,455 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-03-20 00:52:53,455 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 00:52:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-03-20 00:52:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 00:52:53,456 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:53,456 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:52:53,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 00:52:53,658 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,SelfDestructingSolverStorable1 [2022-03-20 00:52:53,659 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 1 times [2022-03-20 00:52:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:53,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156756717] [2022-03-20 00:52:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:53,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:53,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873945219] [2022-03-20 00:52:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:53,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:53,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:53,707 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 00:52:53,724 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 00:52:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:52:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 00:52:53,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:52:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:54,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:52:54,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:52:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156756717] [2022-03-20 00:52:54,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:52:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873945219] [2022-03-20 00:52:54,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873945219] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:52:54,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:52:54,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 00:52:54,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029327084] [2022-03-20 00:52:54,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:52:54,017 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:52:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:52:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:52:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 00:52:54,017 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 00:52:56,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 00:52:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:52:56,058 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-03-20 00:52:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:52:56,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-20 00:52:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:52:56,060 INFO L225 Difference]: With dead ends: 37 [2022-03-20 00:52:56,060 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 00:52:56,061 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 00:52:56,061 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:52:56,062 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 00:52:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 00:52:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-03-20 00:52:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 00:52:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-03-20 00:52:56,070 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-03-20 00:52:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:52:56,071 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-03-20 00:52:56,071 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 00:52:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-03-20 00:52:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 00:52:56,071 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:56,072 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:52:56,088 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 00:52:56,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:56,288 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 1 times [2022-03-20 00:52:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:56,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878579257] [2022-03-20 00:52:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:56,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:56,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966838562] [2022-03-20 00:52:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:56,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:56,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:56,299 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 00:52:56,304 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 00:52:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:52:56,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 00:52:56,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:52:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:56,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:52:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:52:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878579257] [2022-03-20 00:52:56,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:52:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966838562] [2022-03-20 00:52:56,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966838562] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:52:56,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:52:56,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-20 00:52:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44087540] [2022-03-20 00:52:56,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:52:56,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 00:52:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:52:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 00:52:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-20 00:52:56,555 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:52:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:52:56,616 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-03-20 00:52:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 00:52:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-03-20 00:52:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:52:56,618 INFO L225 Difference]: With dead ends: 39 [2022-03-20 00:52:56,618 INFO L226 Difference]: Without dead ends: 34 [2022-03-20 00:52:56,619 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 00:52:56,619 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:52:56,620 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 112 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:52:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-20 00:52:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-03-20 00:52:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 00:52:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-03-20 00:52:56,624 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-03-20 00:52:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:52:56,625 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-03-20 00:52:56,625 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:52:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-03-20 00:52:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 00:52:56,626 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:56,626 INFO L499 BasicCegarLoop]: trace histogram [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 00:52:56,644 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 00:52:56,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:56,845 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 1 times [2022-03-20 00:52:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:56,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522058005] [2022-03-20 00:52:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:56,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:56,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670746203] [2022-03-20 00:52:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:56,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:56,872 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 00:52:56,876 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 00:52:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:52:56,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 00:52:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:52:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:56,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:52:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:57,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:52:57,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522058005] [2022-03-20 00:52:57,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:52:57,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670746203] [2022-03-20 00:52:57,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670746203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:52:57,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:52:57,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-03-20 00:52:57,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626060696] [2022-03-20 00:52:57,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:52:57,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 00:52:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:52:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 00:52:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-20 00:52:57,036 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-03-20 00:52:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:52:57,092 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-03-20 00:52:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 00:52:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32 [2022-03-20 00:52:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:52:57,095 INFO L225 Difference]: With dead ends: 61 [2022-03-20 00:52:57,096 INFO L226 Difference]: Without dead ends: 56 [2022-03-20 00:52:57,096 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:52:57,101 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:52:57,103 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 116 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:52:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-20 00:52:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-20 00:52:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 00:52:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-03-20 00:52:57,110 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 32 [2022-03-20 00:52:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:52:57,110 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-03-20 00:52:57,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-03-20 00:52:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-03-20 00:52:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 00:52:57,112 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:57,112 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:52:57,135 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 00:52:57,329 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:57,329 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1632159894, now seen corresponding path program 2 times [2022-03-20 00:52:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:57,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653792392] [2022-03-20 00:52:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:57,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:57,342 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:57,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959139431] [2022-03-20 00:52:57,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 00:52:57,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:57,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:57,359 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 00:52:57,383 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 00:52:57,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 00:52:57,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:52:57,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 00:52:57,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:52:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 00:52:57,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:52:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 00:52:57,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:52:57,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653792392] [2022-03-20 00:52:57,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:52:57,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959139431] [2022-03-20 00:52:57,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959139431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:52:57,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:52:57,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-03-20 00:52:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187469346] [2022-03-20 00:52:57,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:52:57,709 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 00:52:57,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:52:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 00:52:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:52:57,709 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2022-03-20 00:52:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:52:57,836 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2022-03-20 00:52:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 00:52:57,836 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 59 [2022-03-20 00:52:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:52:57,837 INFO L225 Difference]: With dead ends: 115 [2022-03-20 00:52:57,837 INFO L226 Difference]: Without dead ends: 110 [2022-03-20 00:52:57,838 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-03-20 00:52:57,838 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 97 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:52:57,838 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 148 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:52:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-20 00:52:57,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-03-20 00:52:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 00:52:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-03-20 00:52:57,850 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 59 [2022-03-20 00:52:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:52:57,850 INFO L478 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-03-20 00:52:57,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2022-03-20 00:52:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-03-20 00:52:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-20 00:52:57,852 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:52:57,853 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:52:57,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 00:52:58,070 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:58,070 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:52:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:52:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1468805930, now seen corresponding path program 3 times [2022-03-20 00:52:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:52:58,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501236843] [2022-03-20 00:52:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:52:58,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:52:58,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:52:58,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674884236] [2022-03-20 00:52:58,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 00:52:58,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:52:58,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:52:58,081 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 00:52:58,104 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 00:53:00,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-03-20 00:53:00,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-20 00:53:00,274 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 00:53:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 00:53:00,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 00:53:00,338 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 00:53:00,339 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 00:53:00,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-20 00:53:00,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:53:00,562 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-03-20 00:53:00,564 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 00:53:00,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:53:00 BoogieIcfgContainer [2022-03-20 00:53:00,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 00:53:00,606 INFO L158 Benchmark]: Toolchain (without parser) took 8333.27ms. Allocated memory was 164.6MB in the beginning and 198.2MB in the end (delta: 33.6MB). Free memory was 114.1MB in the beginning and 138.4MB in the end (delta: -24.3MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2022-03-20 00:53:00,606 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory was 130.7MB in the beginning and 130.7MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 00:53:00,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.45ms. Allocated memory is still 164.6MB. Free memory was 113.9MB in the beginning and 139.0MB in the end (delta: -25.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-20 00:53:00,607 INFO L158 Benchmark]: Boogie Preprocessor took 30.51ms. Allocated memory is still 164.6MB. Free memory was 139.0MB in the beginning and 137.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 00:53:00,607 INFO L158 Benchmark]: RCFGBuilder took 192.82ms. Allocated memory is still 164.6MB. Free memory was 137.7MB in the beginning and 127.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 00:53:00,607 INFO L158 Benchmark]: TraceAbstraction took 7947.25ms. Allocated memory was 164.6MB in the beginning and 198.2MB in the end (delta: 33.6MB). Free memory was 126.9MB in the beginning and 138.4MB in the end (delta: -11.5MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. [2022-03-20 00:53:00,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory was 130.7MB in the beginning and 130.7MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.45ms. Allocated memory is still 164.6MB. Free memory was 113.9MB in the beginning and 139.0MB in the end (delta: -25.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.51ms. Allocated memory is still 164.6MB. Free memory was 139.0MB in the beginning and 137.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 192.82ms. Allocated memory is still 164.6MB. Free memory was 137.7MB in the beginning and 127.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 7947.25ms. Allocated memory was 164.6MB in the beginning and 198.2MB in the end (delta: 33.6MB). Free memory was 126.9MB in the beginning and 138.4MB in the end (delta: -11.5MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=14, counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(counter)=0, A=2603, counter=0, R=52] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [\old(counter)=0, A=2603, counter=0, R=52] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [\old(counter)=0, A=2603, counter=0, r=101, R=52, u=105, v=1] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=1, counter++=0, r=101, R=52, u=105, v=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=1, R=52, r=101, u=105, v=1] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=1, R=52, r=101, u=105, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=1, R=52, r=100, u=105, v=3] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=2, counter++=1, R=52, r=100, u=105, v=3] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=2, R=52, r=100, u=105, v=3] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=2, R=52, r=100, u=105, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=2, R=52, r=97, u=105, v=5] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=3, counter++=2, R=52, r=97, u=105, v=5] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=3, r=97, R=52, u=105, v=5] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=3, r=97, R=52, u=105, v=5] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=3, R=52, r=92, u=105, v=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=4, counter++=3, r=92, R=52, u=105, v=7] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=4, r=92, R=52, u=105, v=7] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=4, r=92, R=52, u=105, v=7] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=4, R=52, r=85, u=105, v=9] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=5, counter++=4, r=85, R=52, u=105, v=9] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=5, r=85, R=52, u=105, v=9] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=5, R=52, r=85, u=105, v=9] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=5, r=76, R=52, u=105, v=11] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=6, counter++=5, R=52, r=76, u=105, v=11] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=6, r=76, R=52, u=105, v=11] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=6, R=52, r=76, u=105, v=11] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=6, R=52, r=65, u=105, v=13] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=7, counter++=6, r=65, R=52, u=105, v=13] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=7, r=65, R=52, u=105, v=13] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=7, R=52, r=65, u=105, v=13] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=7, r=52, R=52, u=105, v=15] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=8, counter++=7, r=52, R=52, u=105, v=15] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=8, r=52, R=52, u=105, v=15] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=8, R=52, r=52, u=105, v=15] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=8, r=37, R=52, u=105, v=17] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=9, counter++=8, R=52, r=37, u=105, v=17] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=9, r=37, R=52, u=105, v=17] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=9, R=52, r=37, u=105, v=17] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=9, r=20, R=52, u=105, v=19] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=10, counter++=9, R=52, r=20, u=105, v=19] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=2603, counter=10, r=20, R=52, u=105, v=19] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=2603, counter=10, R=52, r=20, u=105, v=19] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=2603, counter=10, R=52, r=1, u=105, v=21] [L34] EXPR counter++ VAL [\old(counter)=0, A=2603, counter=11, counter++=10, R=52, r=1, u=105, v=21] [L34] COND FALSE !(counter++<10) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 565 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 396 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 169 mSDtfsCounter, 153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 779 SizeOfPredicates, 17 NumberOfNonLiveVariables, 665 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-20 00:53:00,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...