/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench/egcd3-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:06:38,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:06:38,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:06:38,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:06:38,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:06:38,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:06:38,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:06:38,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:06:38,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:06:38,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:06:38,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:06:38,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:06:38,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:06:38,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:06:38,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:06:38,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:06:38,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:06:38,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:06:38,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:06:38,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:06:38,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:06:38,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:06:38,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:06:38,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:06:38,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:06:38,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:06:38,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:06:38,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:06:38,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:06:38,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:06:38,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:06:38,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:06:38,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:06:38,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:06:38,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:06:38,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:06:38,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:06:38,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:06:38,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:06:38,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:06:38,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:06:38,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:06:38,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:06:38,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:06:38,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:06:38,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:06:38,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:06:38,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:06:38,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:06:38,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:06:38,844 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:06:38,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:06:38,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:06:38,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:06:38,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:06:38,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:06:38,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:06:38,845 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:06:38,845 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:06:38,845 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:06:38,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:06:38,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:06:38,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:06:38,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:06:38,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:06:38,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:06:38,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:06:38,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:06:38,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:06:38,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:06:38,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:06:38,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:06:38,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:06:39,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:06:39,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:06:39,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:06:39,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:06:39,220 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:06:39,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd3-ll.c [2022-10-15 17:06:39,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440e64c0f/47e0a968d12e4386b6c0ad7ad92f0d7e/FLAG78e3b7199 [2022-10-15 17:06:40,033 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:06:40,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd3-ll.c [2022-10-15 17:06:40,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440e64c0f/47e0a968d12e4386b6c0ad7ad92f0d7e/FLAG78e3b7199 [2022-10-15 17:06:40,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440e64c0f/47e0a968d12e4386b6c0ad7ad92f0d7e [2022-10-15 17:06:40,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:06:40,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:06:40,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:06:40,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:06:40,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:06:40,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc38128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40, skipping insertion in model container [2022-10-15 17:06:40,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:06:40,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:06:40,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd3-ll.c[490,503] [2022-10-15 17:06:40,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:06:40,636 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:06:40,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd3-ll.c[490,503] [2022-10-15 17:06:40,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:06:40,681 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:06:40,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40 WrapperNode [2022-10-15 17:06:40,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:06:40,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:06:40,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:06:40,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:06:40,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,753 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2022-10-15 17:06:40,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:06:40,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:06:40,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:06:40,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:06:40,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:06:40,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:06:40,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:06:40,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:06:40,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (1/1) ... [2022-10-15 17:06:40,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:06:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:40,866 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) [2022-10-15 17:06:40,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:06:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:06:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:06:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:06:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:06:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:06:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:06:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 17:06:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 17:06:41,039 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:06:41,041 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:06:41,272 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:06:41,293 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:06:41,294 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 17:06:41,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:06:41 BoogieIcfgContainer [2022-10-15 17:06:41,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:06:41,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:06:41,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:06:41,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:06:41,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:06:40" (1/3) ... [2022-10-15 17:06:41,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b81b435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:06:41, skipping insertion in model container [2022-10-15 17:06:41,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:06:40" (2/3) ... [2022-10-15 17:06:41,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b81b435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:06:41, skipping insertion in model container [2022-10-15 17:06:41,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:06:41" (3/3) ... [2022-10-15 17:06:41,344 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll.c [2022-10-15 17:06:41,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:06:41,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 17:06:41,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:06:41,479 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15df885c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:06:41,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 17:06:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.619047619047619) internal successors, (34), 23 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-15 17:06:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 17:06:41,512 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:41,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:41,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -992932839, now seen corresponding path program 1 times [2022-10-15 17:06:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:41,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104780823] [2022-10-15 17:06:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:41,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:41,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104780823] [2022-10-15 17:06:41,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-15 17:06:41,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946115512] [2022-10-15 17:06:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:41,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:41,737 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) [2022-10-15 17:06:41,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:06:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:41,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-15 17:06:41,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 17:06:41,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:41,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946115512] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:41,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:41,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:06:41,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744266810] [2022-10-15 17:06:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 17:06:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 17:06:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:06:41,904 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.619047619047619) internal successors, (34), 23 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:06:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:41,926 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-10-15 17:06:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 17:06:41,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-10-15 17:06:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:41,939 INFO L225 Difference]: With dead ends: 33 [2022-10-15 17:06:41,940 INFO L226 Difference]: Without dead ends: 31 [2022-10-15 17:06:41,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:06:41,947 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-10-15 17:06:41,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:06:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-15 17:06:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-10-15 17:06:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-15 17:06:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-10-15 17:06:41,994 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2022-10-15 17:06:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:41,995 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-10-15 17:06:41,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:06:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-10-15 17:06:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 17:06:41,998 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:41,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:42,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:42,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-15 17:06:42,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1887218060, now seen corresponding path program 1 times [2022-10-15 17:06:42,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:42,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065395677] [2022-10-15 17:06:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:42,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:42,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492888557] [2022-10-15 17:06:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:42,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:42,255 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) [2022-10-15 17:06:42,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:06:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:42,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:06:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:42,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:42,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:42,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065395677] [2022-10-15 17:06:42,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:42,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492888557] [2022-10-15 17:06:42,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492888557] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:42,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:42,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:06:42,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880009507] [2022-10-15 17:06:42,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:42,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:06:42,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:06:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:06:42,428 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:06:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:42,546 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2022-10-15 17:06:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:06:42,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-10-15 17:06:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:42,549 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:06:42,549 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:06:42,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:06:42,552 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:42,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 116 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:06:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:06:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-10-15 17:06:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-15 17:06:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-10-15 17:06:42,569 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2022-10-15 17:06:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:42,570 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-10-15 17:06:42,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:06:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-10-15 17:06:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:06:42,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:42,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:42,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-15 17:06:42,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -588183371, now seen corresponding path program 1 times [2022-10-15 17:06:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277471759] [2022-10-15 17:06:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:42,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:42,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481000830] [2022-10-15 17:06:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:42,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:42,810 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) [2022-10-15 17:06:42,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:06:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:42,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 17:06:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:43,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:43,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:43,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277471759] [2022-10-15 17:06:43,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:43,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481000830] [2022-10-15 17:06:43,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481000830] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:43,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:43,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-15 17:06:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824681968] [2022-10-15 17:06:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:06:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:06:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:06:43,126 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:06:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:43,292 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2022-10-15 17:06:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:06:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-10-15 17:06:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:43,298 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:06:43,298 INFO L226 Difference]: Without dead ends: 47 [2022-10-15 17:06:43,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:06:43,308 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:43,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 172 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:06:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-15 17:06:43,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-10-15 17:06:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-15 17:06:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-10-15 17:06:43,333 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 22 [2022-10-15 17:06:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:43,333 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-10-15 17:06:43,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:06:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-10-15 17:06:43,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 17:06:43,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:43,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:43,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:43,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:43,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1879387901, now seen corresponding path program 1 times [2022-10-15 17:06:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:43,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294881353] [2022-10-15 17:06:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:43,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:43,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:43,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816772546] [2022-10-15 17:06:43,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:43,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:43,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:43,576 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) [2022-10-15 17:06:43,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:06:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:43,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 17:06:43,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:43,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:06:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:43,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:43,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294881353] [2022-10-15 17:06:43,839 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:43,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816772546] [2022-10-15 17:06:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816772546] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:06:43,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:06:43,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-10-15 17:06:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932192150] [2022-10-15 17:06:43,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:06:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:06:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:06:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:06:43,844 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:06:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:44,121 INFO L93 Difference]: Finished difference Result 95 states and 133 transitions. [2022-10-15 17:06:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:06:44,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-10-15 17:06:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:44,123 INFO L225 Difference]: With dead ends: 95 [2022-10-15 17:06:44,123 INFO L226 Difference]: Without dead ends: 95 [2022-10-15 17:06:44,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:06:44,125 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 64 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:44,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 226 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:06:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-15 17:06:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 67. [2022-10-15 17:06:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 17:06:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2022-10-15 17:06:44,140 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 24 [2022-10-15 17:06:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:44,140 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2022-10-15 17:06:44,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:06:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2022-10-15 17:06:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:06:44,142 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:44,142 INFO L195 NwaCegarLoop]: 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] [2022-10-15 17:06:44,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:44,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:44,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2086472807, now seen corresponding path program 1 times [2022-10-15 17:06:44,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:44,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874070764] [2022-10-15 17:06:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:44,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:44,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:44,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250538628] [2022-10-15 17:06:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:44,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:44,378 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) [2022-10-15 17:06:44,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:06:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:44,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:06:44,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:44,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:44,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:44,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874070764] [2022-10-15 17:06:44,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:44,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250538628] [2022-10-15 17:06:44,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250538628] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:44,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:44,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:06:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983877589] [2022-10-15 17:06:44,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:44,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:06:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:06:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:06:44,645 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:06:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:44,785 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2022-10-15 17:06:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:06:44,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-10-15 17:06:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:44,787 INFO L225 Difference]: With dead ends: 73 [2022-10-15 17:06:44,788 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 17:06:44,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:06:44,789 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:44,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 154 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:06:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 17:06:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-10-15 17:06:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 17:06:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2022-10-15 17:06:44,803 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 27 [2022-10-15 17:06:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:44,803 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2022-10-15 17:06:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:06:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2022-10-15 17:06:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:06:44,805 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:44,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:44,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 17:06:45,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:45,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1230792226, now seen corresponding path program 1 times [2022-10-15 17:06:45,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:45,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990812461] [2022-10-15 17:06:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:45,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:45,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153728661] [2022-10-15 17:06:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:45,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:45,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:45,046 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) [2022-10-15 17:06:45,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:06:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:45,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-15 17:06:45,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:45,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:06:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 17:06:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:45,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990812461] [2022-10-15 17:06:45,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:45,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153728661] [2022-10-15 17:06:45,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153728661] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:06:45,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:06:45,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2022-10-15 17:06:45,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331667191] [2022-10-15 17:06:45,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:06:45,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:06:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:06:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:06:45,391 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:06:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:45,654 INFO L93 Difference]: Finished difference Result 108 states and 142 transitions. [2022-10-15 17:06:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:06:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-10-15 17:06:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:45,657 INFO L225 Difference]: With dead ends: 108 [2022-10-15 17:06:45,657 INFO L226 Difference]: Without dead ends: 108 [2022-10-15 17:06:45,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:06:45,659 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 46 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:45,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 259 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:06:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-10-15 17:06:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2022-10-15 17:06:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 72 states have internal predecessors, (89), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-15 17:06:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2022-10-15 17:06:45,675 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 27 [2022-10-15 17:06:45,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:45,675 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2022-10-15 17:06:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:06:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2022-10-15 17:06:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 17:06:45,677 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:45,677 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:45,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:45,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:45,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:45,894 INFO L85 PathProgramCache]: Analyzing trace with hash 918638325, now seen corresponding path program 1 times [2022-10-15 17:06:45,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:45,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645599860] [2022-10-15 17:06:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:45,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:45,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862738770] [2022-10-15 17:06:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:45,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:45,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:45,938 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) [2022-10-15 17:06:45,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:06:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:46,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:06:46,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 17:06:46,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:46,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645599860] [2022-10-15 17:06:46,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:46,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862738770] [2022-10-15 17:06:46,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862738770] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:46,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:46,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:06:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016204594] [2022-10-15 17:06:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:06:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:06:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:06:46,069 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:06:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:46,128 INFO L93 Difference]: Finished difference Result 145 states and 205 transitions. [2022-10-15 17:06:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:06:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-10-15 17:06:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:46,131 INFO L225 Difference]: With dead ends: 145 [2022-10-15 17:06:46,132 INFO L226 Difference]: Without dead ends: 145 [2022-10-15 17:06:46,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:06:46,133 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:46,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:06:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-15 17:06:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2022-10-15 17:06:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 89 states have internal predecessors, (113), 43 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-10-15 17:06:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 199 transitions. [2022-10-15 17:06:46,154 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 199 transitions. Word has length 32 [2022-10-15 17:06:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:46,155 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 199 transitions. [2022-10-15 17:06:46,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:06:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 199 transitions. [2022-10-15 17:06:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 17:06:46,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:46,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:46,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:46,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:46,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1646676976, now seen corresponding path program 1 times [2022-10-15 17:06:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:46,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763626811] [2022-10-15 17:06:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:46,388 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:46,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374731403] [2022-10-15 17:06:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:46,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:46,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:46,390 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:06:46,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:06:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:46,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 17:06:46,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:06:46,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:06:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 17:06:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763626811] [2022-10-15 17:06:46,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374731403] [2022-10-15 17:06:46,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374731403] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:06:46,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:06:46,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-10-15 17:06:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157469589] [2022-10-15 17:06:46,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:06:46,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 17:06:46,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 17:06:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:06:46,927 INFO L87 Difference]: Start difference. First operand 139 states and 199 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 13 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-15 17:06:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:52,897 INFO L93 Difference]: Finished difference Result 266 states and 388 transitions. [2022-10-15 17:06:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 17:06:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 13 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 32 [2022-10-15 17:06:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:52,902 INFO L225 Difference]: With dead ends: 266 [2022-10-15 17:06:52,902 INFO L226 Difference]: Without dead ends: 266 [2022-10-15 17:06:52,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:06:52,904 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 175 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:52,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 305 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-10-15 17:06:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-10-15 17:06:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 207. [2022-10-15 17:06:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 138 states have (on average 1.289855072463768) internal successors, (178), 139 states have internal predecessors, (178), 59 states have call successors, (59), 8 states have call predecessors, (59), 8 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-10-15 17:06:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 296 transitions. [2022-10-15 17:06:52,935 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 296 transitions. Word has length 32 [2022-10-15 17:06:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:52,935 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 296 transitions. [2022-10-15 17:06:52,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 13 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-15 17:06:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 296 transitions. [2022-10-15 17:06:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 17:06:52,937 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:52,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:52,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:53,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-15 17:06:53,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash -790996395, now seen corresponding path program 2 times [2022-10-15 17:06:53,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:53,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755406773] [2022-10-15 17:06:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:53,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:53,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015725953] [2022-10-15 17:06:53,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:06:53,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:53,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:53,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:06:53,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:06:53,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:06:53,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:06:53,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 17:06:53,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 17:06:53,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:53,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755406773] [2022-10-15 17:06:53,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:53,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015725953] [2022-10-15 17:06:53,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015725953] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:53,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:53,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:06:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801149350] [2022-10-15 17:06:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:53,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:06:53,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:06:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:06:53,257 INFO L87 Difference]: Start difference. First operand 207 states and 296 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:06:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:53,360 INFO L93 Difference]: Finished difference Result 130 states and 172 transitions. [2022-10-15 17:06:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:06:53,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-10-15 17:06:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:53,363 INFO L225 Difference]: With dead ends: 130 [2022-10-15 17:06:53,363 INFO L226 Difference]: Without dead ends: 130 [2022-10-15 17:06:53,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:06:53,364 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 20 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:53,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 126 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:06:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-15 17:06:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2022-10-15 17:06:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 78 states have internal predecessors, (93), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-10-15 17:06:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 163 transitions. [2022-10-15 17:06:53,378 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 163 transitions. Word has length 32 [2022-10-15 17:06:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:53,379 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 163 transitions. [2022-10-15 17:06:53,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:06:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 163 transitions. [2022-10-15 17:06:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 17:06:53,380 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:53,381 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:53,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-15 17:06:53,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:53,595 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1400978215, now seen corresponding path program 1 times [2022-10-15 17:06:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:53,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107945451] [2022-10-15 17:06:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:53,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797837052] [2022-10-15 17:06:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:53,611 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:06:53,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:06:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:53,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:06:53,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:06:53,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:06:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:53,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107945451] [2022-10-15 17:06:53,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:53,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797837052] [2022-10-15 17:06:53,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797837052] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:06:53,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:06:53,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:06:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687767203] [2022-10-15 17:06:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:06:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:06:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:06:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:06:53,700 INFO L87 Difference]: Start difference. First operand 122 states and 163 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:06:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:06:53,752 INFO L93 Difference]: Finished difference Result 188 states and 272 transitions. [2022-10-15 17:06:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:06:53,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-10-15 17:06:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:06:53,756 INFO L225 Difference]: With dead ends: 188 [2022-10-15 17:06:53,757 INFO L226 Difference]: Without dead ends: 188 [2022-10-15 17:06:53,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:06:53,759 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:06:53,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 132 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:06:53,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-15 17:06:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 166. [2022-10-15 17:06:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 97 states have internal predecessors, (104), 67 states have call successors, (67), 9 states have call predecessors, (67), 9 states have return successors, (67), 59 states have call predecessors, (67), 67 states have call successors, (67) [2022-10-15 17:06:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 238 transitions. [2022-10-15 17:06:53,805 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 238 transitions. Word has length 37 [2022-10-15 17:06:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:06:53,805 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 238 transitions. [2022-10-15 17:06:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:06:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 238 transitions. [2022-10-15 17:06:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 17:06:53,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:06:53,811 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:06:53,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:06:54,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 17:06:54,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:06:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:06:54,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2055214038, now seen corresponding path program 1 times [2022-10-15 17:06:54,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:06:54,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772829326] [2022-10-15 17:06:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:54,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:06:54,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:06:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562411608] [2022-10-15 17:06:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:06:54,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:06:54,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:06:54,031 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:06:54,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 17:06:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:06:54,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 53 conjunts are in the unsatisfiable core [2022-10-15 17:06:54,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:06:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:06:54,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:06:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 17:06:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:06:55,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772829326] [2022-10-15 17:06:55,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:06:55,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562411608] [2022-10-15 17:06:55,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562411608] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:06:55,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:06:55,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-10-15 17:06:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330962483] [2022-10-15 17:06:55,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:06:55,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 17:06:55,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:06:55,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 17:06:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:06:55,549 INFO L87 Difference]: Start difference. First operand 166 states and 238 transitions. Second operand has 21 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2022-10-15 17:07:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:07:05,861 INFO L93 Difference]: Finished difference Result 305 states and 454 transitions. [2022-10-15 17:07:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-15 17:07:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) Word has length 49 [2022-10-15 17:07:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:07:05,869 INFO L225 Difference]: With dead ends: 305 [2022-10-15 17:07:05,869 INFO L226 Difference]: Without dead ends: 305 [2022-10-15 17:07:05,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-10-15 17:07:05,877 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 117 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:07:05,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 232 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-10-15 17:07:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-10-15 17:07:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 249. [2022-10-15 17:07:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 151 states have internal predecessors, (177), 92 states have call successors, (92), 12 states have call predecessors, (92), 12 states have return successors, (92), 85 states have call predecessors, (92), 92 states have call successors, (92) [2022-10-15 17:07:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 361 transitions. [2022-10-15 17:07:05,919 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 361 transitions. Word has length 49 [2022-10-15 17:07:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:07:05,920 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 361 transitions. [2022-10-15 17:07:05,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2022-10-15 17:07:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 361 transitions. [2022-10-15 17:07:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 17:07:05,927 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:07:05,927 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:07:05,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 17:07:06,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:07:06,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:07:06,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:07:06,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2127467249, now seen corresponding path program 1 times [2022-10-15 17:07:06,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:07:06,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073269516] [2022-10-15 17:07:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:07:06,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:07:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344536010] [2022-10-15 17:07:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:06,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:07:06,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:07:06,184 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:07:06,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 17:07:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:07:06,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 17:07:06,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:07:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-15 17:07:06,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:07:06,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:07:06,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073269516] [2022-10-15 17:07:06,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:07:06,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344536010] [2022-10-15 17:07:06,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344536010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:07:06,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:07:06,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:07:06,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911615825] [2022-10-15 17:07:06,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:07:06,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:07:06,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:07:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:07:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:07:06,290 INFO L87 Difference]: Start difference. First operand 249 states and 361 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 17:07:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:07:06,307 INFO L93 Difference]: Finished difference Result 248 states and 360 transitions. [2022-10-15 17:07:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:07:06,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 52 [2022-10-15 17:07:06,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:07:06,311 INFO L225 Difference]: With dead ends: 248 [2022-10-15 17:07:06,311 INFO L226 Difference]: Without dead ends: 245 [2022-10-15 17:07:06,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:07:06,312 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:07:06,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:07:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-10-15 17:07:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-10-15 17:07:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 148 states have internal predecessors, (172), 91 states have call successors, (91), 12 states have call predecessors, (91), 12 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2022-10-15 17:07:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 353 transitions. [2022-10-15 17:07:06,330 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 353 transitions. Word has length 52 [2022-10-15 17:07:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:07:06,330 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 353 transitions. [2022-10-15 17:07:06,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 17:07:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 353 transitions. [2022-10-15 17:07:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-15 17:07:06,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:07:06,332 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:07:06,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 17:07:06,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 17:07:06,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:07:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:07:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2089105690, now seen corresponding path program 1 times [2022-10-15 17:07:06,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:07:06,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567990837] [2022-10-15 17:07:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:06,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:07:06,561 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:07:06,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146174200] [2022-10-15 17:07:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:06,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:07:06,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:07:06,563 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:07:06,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 17:07:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:07:06,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 17:07:06,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:07:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-15 17:07:06,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:07:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-15 17:07:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:07:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567990837] [2022-10-15 17:07:06,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:07:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146174200] [2022-10-15 17:07:06,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146174200] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-15 17:07:06,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:07:06,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-10-15 17:07:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131602202] [2022-10-15 17:07:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:07:06,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:07:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:07:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:07:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:07:06,842 INFO L87 Difference]: Start difference. First operand 245 states and 353 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:07:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:07:06,885 INFO L93 Difference]: Finished difference Result 249 states and 356 transitions. [2022-10-15 17:07:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:07:06,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-10-15 17:07:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:07:06,888 INFO L225 Difference]: With dead ends: 249 [2022-10-15 17:07:06,888 INFO L226 Difference]: Without dead ends: 249 [2022-10-15 17:07:06,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:07:06,890 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:07:06,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:07:06,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-10-15 17:07:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-10-15 17:07:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 144 states have (on average 1.2152777777777777) internal successors, (175), 151 states have internal predecessors, (175), 91 states have call successors, (91), 13 states have call predecessors, (91), 13 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2022-10-15 17:07:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 356 transitions. [2022-10-15 17:07:06,904 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 356 transitions. Word has length 59 [2022-10-15 17:07:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:07:06,904 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 356 transitions. [2022-10-15 17:07:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 17:07:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 356 transitions. [2022-10-15 17:07:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-15 17:07:06,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:07:06,906 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:07:06,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 17:07:07,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:07:07,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:07:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:07:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1455037036, now seen corresponding path program 1 times [2022-10-15 17:07:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:07:07,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692186095] [2022-10-15 17:07:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:07:07,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:07:07,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012134418] [2022-10-15 17:07:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:07,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:07:07,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:07:07,138 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:07:07,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 17:07:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:07:07,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-15 17:07:07,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:07:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 17:07:07,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:07:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 17:07:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:07:07,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692186095] [2022-10-15 17:07:07,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:07:07,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012134418] [2022-10-15 17:07:07,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012134418] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:07:07,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:07:07,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2022-10-15 17:07:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956927279] [2022-10-15 17:07:07,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:07:07,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:07:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:07:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:07:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:07:07,531 INFO L87 Difference]: Start difference. First operand 249 states and 356 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-15 17:07:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:07:08,236 INFO L93 Difference]: Finished difference Result 302 states and 428 transitions. [2022-10-15 17:07:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:07:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 57 [2022-10-15 17:07:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:07:08,240 INFO L225 Difference]: With dead ends: 302 [2022-10-15 17:07:08,240 INFO L226 Difference]: Without dead ends: 302 [2022-10-15 17:07:08,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:07:08,242 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 65 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:07:08,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 221 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:07:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-10-15 17:07:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2022-10-15 17:07:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 160 states have internal predecessors, (184), 91 states have call successors, (91), 16 states have call predecessors, (91), 16 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2022-10-15 17:07:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 365 transitions. [2022-10-15 17:07:08,259 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 365 transitions. Word has length 57 [2022-10-15 17:07:08,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:07:08,259 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 365 transitions. [2022-10-15 17:07:08,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-10-15 17:07:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 365 transitions. [2022-10-15 17:07:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-15 17:07:08,261 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:07:08,261 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:07:08,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-15 17:07:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:07:08,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:07:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:07:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -882383617, now seen corresponding path program 2 times [2022-10-15 17:07:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:07:08,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703939019] [2022-10-15 17:07:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:07:08,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:07:08,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370941661] [2022-10-15 17:07:08,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:07:08,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:07:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:07:08,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:07:08,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 17:07:08,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:07:08,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:07:08,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:07:08,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:07:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 17:07:08,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:07:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:07:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703939019] [2022-10-15 17:07:08,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:07:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370941661] [2022-10-15 17:07:08,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370941661] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:07:08,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:07:08,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:07:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619587548] [2022-10-15 17:07:08,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:07:08,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:07:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:07:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:07:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:07:08,596 INFO L87 Difference]: Start difference. First operand 261 states and 365 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-15 17:07:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:07:08,649 INFO L93 Difference]: Finished difference Result 272 states and 367 transitions. [2022-10-15 17:07:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:07:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-10-15 17:07:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:07:08,652 INFO L225 Difference]: With dead ends: 272 [2022-10-15 17:07:08,652 INFO L226 Difference]: Without dead ends: 272 [2022-10-15 17:07:08,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:07:08,653 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:07:08,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:07:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-10-15 17:07:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 252. [2022-10-15 17:07:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 152 states have (on average 1.1973684210526316) internal successors, (182), 153 states have internal predecessors, (182), 83 states have call successors, (83), 16 states have call predecessors, (83), 16 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-10-15 17:07:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 347 transitions. [2022-10-15 17:07:08,668 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 347 transitions. Word has length 62 [2022-10-15 17:07:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:07:08,668 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 347 transitions. [2022-10-15 17:07:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-15 17:07:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 347 transitions. [2022-10-15 17:07:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-15 17:07:08,669 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:07:08,670 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:07:08,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-15 17:07:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 17:07:08,885 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 17:07:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:07:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash 847268378, now seen corresponding path program 3 times [2022-10-15 17:07:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:07:08,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888877759] [2022-10-15 17:07:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:07:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:07:08,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 17:07:08,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583496511] [2022-10-15 17:07:08,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:07:08,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:07:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:07:08,902 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:07:08,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-15 17:07:08,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-15 17:07:08,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:07:08,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-15 17:07:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:07:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-15 17:07:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:07:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-15 17:07:21,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:07:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888877759] [2022-10-15 17:07:21,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 17:07:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583496511] [2022-10-15 17:07:21,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583496511] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:07:21,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:07:21,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2022-10-15 17:07:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075670503] [2022-10-15 17:07:21,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:07:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-15 17:07:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:07:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-15 17:07:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=638, Unknown=1, NotChecked=0, Total=756 [2022-10-15 17:07:21,134 INFO L87 Difference]: Start difference. First operand 252 states and 347 transitions. Second operand has 28 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-10-15 17:07:22,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []