/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 15:51:54,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 15:51:54,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 15:51:54,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 15:51:54,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 15:51:54,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 15:51:54,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 15:51:54,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 15:51:54,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 15:51:54,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 15:51:54,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 15:51:54,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 15:51:54,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 15:51:54,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 15:51:54,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 15:51:54,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 15:51:54,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 15:51:54,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 15:51:54,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 15:51:54,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 15:51:54,845 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 15:51:54,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 15:51:54,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 15:51:54,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 15:51:54,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 15:51:54,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 15:51:54,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 15:51:54,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 15:51:54,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 15:51:54,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 15:51:54,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 15:51:54,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 15:51:54,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 15:51:54,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 15:51:54,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 15:51:54,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 15:51:54,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 15:51:54,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 15:51:54,886 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 15:51:54,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 15:51:54,886 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 15:51:54,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 15:51:54,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 15:51:54,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 15:51:54,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 15:51:54,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 15:51:54,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 15:51:54,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 15:51:54,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 15:51:54,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 15:51:54,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 15:51:54,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 15:51:54,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 15:51:54,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 15:51:54,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 15:51:54,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 15:51:54,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 15:51:54,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 15:51:55,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 15:51:55,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 15:51:55,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 15:51:55,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 15:51:55,114 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 15:51:55,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c [2022-03-18 15:51:55,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bb83d8d/ac3e9609b13a43b2b22de5b3e22fb6ef/FLAG1ea9d91ef [2022-03-18 15:51:55,481 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 15:51:55,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c [2022-03-18 15:51:55,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bb83d8d/ac3e9609b13a43b2b22de5b3e22fb6ef/FLAG1ea9d91ef [2022-03-18 15:51:55,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bb83d8d/ac3e9609b13a43b2b22de5b3e22fb6ef [2022-03-18 15:51:55,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 15:51:55,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 15:51:55,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 15:51:55,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 15:51:55,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 15:51:55,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 03:51:55" (1/1) ... [2022-03-18 15:51:55,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4468bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:55, skipping insertion in model container [2022-03-18 15:51:55,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 03:51:55" (1/1) ... [2022-03-18 15:51:55,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 15:51:55,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 15:51:56,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c[458,471] [2022-03-18 15:51:56,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 15:51:56,075 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 15:51:56,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound20.c[458,471] [2022-03-18 15:51:56,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 15:51:56,096 INFO L208 MainTranslator]: Completed translation [2022-03-18 15:51:56,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56 WrapperNode [2022-03-18 15:51:56,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 15:51:56,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 15:51:56,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 15:51:56,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 15:51:56,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 15:51:56,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 15:51:56,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 15:51:56,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 15:51:56,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (1/1) ... [2022-03-18 15:51:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 15:51:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:51:56,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 15:51:56,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 15:51:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 15:51:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 15:51:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 15:51:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 15:51:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 15:51:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 15:51:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 15:51:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 15:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 15:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 15:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-03-18 15:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 15:51:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 15:51:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 15:51:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 15:51:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 15:51:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 15:51:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 15:51:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 15:51:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 15:51:56,245 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 15:51:56,247 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 15:51:56,364 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 15:51:56,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 15:51:56,381 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 15:51:56,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 03:51:56 BoogieIcfgContainer [2022-03-18 15:51:56,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 15:51:56,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 15:51:56,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 15:51:56,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 15:51:56,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 03:51:55" (1/3) ... [2022-03-18 15:51:56,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211ec0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 03:51:56, skipping insertion in model container [2022-03-18 15:51:56,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:51:56" (2/3) ... [2022-03-18 15:51:56,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211ec0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 03:51:56, skipping insertion in model container [2022-03-18 15:51:56,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 03:51:56" (3/3) ... [2022-03-18 15:51:56,390 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound20.c [2022-03-18 15:51:56,395 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 15:51:56,396 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 15:51:56,436 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 15:51:56,446 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 15:51:56,446 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 15:51:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 15:51:56,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 15:51:56,476 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:51:56,476 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:51:56,477 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:51:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:51:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1098891495, now seen corresponding path program 1 times [2022-03-18 15:51:56,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:51:56,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899711054] [2022-03-18 15:51:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:51:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 15:51:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 15:51:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 15:51:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 15:51:56,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:51:56,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899711054] [2022-03-18 15:51:56,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899711054] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 15:51:56,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 15:51:56,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 15:51:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203831723] [2022-03-18 15:51:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 15:51:56,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 15:51:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:51:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 15:51:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 15:51:56,708 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 15:51:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:51:56,757 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-03-18 15:51:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 15:51:56,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-03-18 15:51:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:51:56,763 INFO L225 Difference]: With dead ends: 51 [2022-03-18 15:51:56,763 INFO L226 Difference]: Without dead ends: 24 [2022-03-18 15:51:56,766 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 15:51:56,770 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 15:51:56,771 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 15:51:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-18 15:51:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-03-18 15:51:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 15:51:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-03-18 15:51:56,808 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-03-18 15:51:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:51:56,809 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-03-18 15:51:56,809 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 15:51:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-03-18 15:51:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 15:51:56,810 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:51:56,810 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:51:56,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 15:51:56,812 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:51:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:51:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash 769620075, now seen corresponding path program 1 times [2022-03-18 15:51:56,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:51:56,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339214342] [2022-03-18 15:51:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:56,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:51:56,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:51:56,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096691656] [2022-03-18 15:51:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:56,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:56,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:51:56,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:51:56,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 15:51:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:56,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 15:51:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:51:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 15:51:57,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 15:51:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:51:57,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339214342] [2022-03-18 15:51:57,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:51:57,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096691656] [2022-03-18 15:51:57,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096691656] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 15:51:57,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 15:51:57,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 15:51:57,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810860660] [2022-03-18 15:51:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 15:51:57,027 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 15:51:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:51:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 15:51:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 15:51:57,029 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 15:51:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:51:57,075 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-03-18 15:51:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 15:51:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-03-18 15:51:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:51:57,083 INFO L225 Difference]: With dead ends: 35 [2022-03-18 15:51:57,083 INFO L226 Difference]: Without dead ends: 31 [2022-03-18 15:51:57,084 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 15:51:57,085 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 15:51:57,086 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 15:51:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-18 15:51:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-18 15:51:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 15:51:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-03-18 15:51:57,098 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-03-18 15:51:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:51:57,098 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-03-18 15:51:57,099 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 15:51:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-03-18 15:51:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 15:51:57,100 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:51:57,100 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:51:57,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 15:51:57,317 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:57,317 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:51:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:51:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash 645812411, now seen corresponding path program 1 times [2022-03-18 15:51:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:51:57,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386859926] [2022-03-18 15:51:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:57,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:51:57,343 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:51:57,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895473124] [2022-03-18 15:51:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:57,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:51:57,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:51:57,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 15:51:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:57,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 15:51:57,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:51:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 15:51:57,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:51:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-18 15:51:57,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:51:57,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386859926] [2022-03-18 15:51:57,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:51:57,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895473124] [2022-03-18 15:51:57,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895473124] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 15:51:57,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:51:57,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-18 15:51:57,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353049804] [2022-03-18 15:51:57,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 15:51:57,685 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 15:51:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:51:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 15:51:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 15:51:57,685 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 15:51:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:51:57,727 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-03-18 15:51:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 15:51:57,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-03-18 15:51:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:51:57,728 INFO L225 Difference]: With dead ends: 37 [2022-03-18 15:51:57,728 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 15:51:57,728 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 15:51:57,729 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 15:51:57,729 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 15:51:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 15:51:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 15:51:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 15:51:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-03-18 15:51:57,735 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-03-18 15:51:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:51:57,735 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-03-18 15:51:57,735 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 15:51:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-03-18 15:51:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 15:51:57,736 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:51:57,736 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:51:57,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 15:51:57,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 15:51:57,940 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:51:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:51:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash 463554397, now seen corresponding path program 1 times [2022-03-18 15:51:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:51:57,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896359700] [2022-03-18 15:51:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:51:57,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:51:57,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368969649] [2022-03-18 15:51:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:57,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:57,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:51:57,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:51:57,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 15:51:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:51:58,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 15:51:58,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:51:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-18 15:51:58,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:51:58,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:51:58,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896359700] [2022-03-18 15:51:58,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:51:58,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368969649] [2022-03-18 15:51:58,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368969649] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:51:58,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:51:58,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-18 15:51:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805790876] [2022-03-18 15:51:58,516 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:51:58,516 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 15:51:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:51:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 15:51:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 15:51:58,517 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-18 15:51:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:51:58,602 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-03-18 15:51:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 15:51:58,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-03-18 15:51:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:51:58,604 INFO L225 Difference]: With dead ends: 42 [2022-03-18 15:51:58,604 INFO L226 Difference]: Without dead ends: 36 [2022-03-18 15:51:58,604 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-18 15:51:58,605 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:51:58,605 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:51:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-18 15:51:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-18 15:51:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 15:51:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-03-18 15:51:58,616 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-03-18 15:51:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:51:58,616 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-03-18 15:51:58,617 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-18 15:51:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-03-18 15:51:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 15:51:58,617 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:51:58,618 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:51:58,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 15:51:58,828 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:58,828 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:51:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:51:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1886956461, now seen corresponding path program 2 times [2022-03-18 15:51:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:51:58,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678335406] [2022-03-18 15:51:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:51:58,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:51:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514352829] [2022-03-18 15:51:58,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 15:51:58,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:58,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:51:58,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:51:58,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 15:51:58,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 15:51:58,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 15:51:58,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 15:51:58,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:51:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-18 15:51:59,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:51:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:51:59,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678335406] [2022-03-18 15:51:59,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:51:59,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514352829] [2022-03-18 15:51:59,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514352829] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:51:59,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:51:59,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-03-18 15:51:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131592357] [2022-03-18 15:51:59,294 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:51:59,294 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 15:51:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:51:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 15:51:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 15:51:59,295 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-03-18 15:51:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:51:59,354 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-03-18 15:51:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 15:51:59,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-03-18 15:51:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:51:59,355 INFO L225 Difference]: With dead ends: 45 [2022-03-18 15:51:59,355 INFO L226 Difference]: Without dead ends: 39 [2022-03-18 15:51:59,355 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-18 15:51:59,356 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 15:51:59,356 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 195 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 15:51:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-18 15:51:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-18 15:51:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 15:51:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-03-18 15:51:59,361 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-03-18 15:51:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:51:59,361 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-03-18 15:51:59,362 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-03-18 15:51:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-03-18 15:51:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 15:51:59,362 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:51:59,363 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:51:59,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 15:51:59,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:59,567 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:51:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:51:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1213805219, now seen corresponding path program 3 times [2022-03-18 15:51:59,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:51:59,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053739750] [2022-03-18 15:51:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:51:59,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:51:59,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:51:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225692246] [2022-03-18 15:51:59,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 15:51:59,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:51:59,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:51:59,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:51:59,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 15:51:59,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-18 15:51:59,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 15:51:59,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-18 15:51:59,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:51:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-18 15:51:59,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:52:00,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:52:00,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053739750] [2022-03-18 15:52:00,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:52:00,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225692246] [2022-03-18 15:52:00,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225692246] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:52:00,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:52:00,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-18 15:52:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105183846] [2022-03-18 15:52:00,067 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:52:00,067 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 15:52:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:52:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 15:52:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 15:52:00,068 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-03-18 15:52:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:52:00,155 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-03-18 15:52:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 15:52:00,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 54 [2022-03-18 15:52:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:52:00,157 INFO L225 Difference]: With dead ends: 48 [2022-03-18 15:52:00,157 INFO L226 Difference]: Without dead ends: 42 [2022-03-18 15:52:00,157 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-18 15:52:00,157 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:52:00,158 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 239 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:52:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-18 15:52:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-18 15:52:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 15:52:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-03-18 15:52:00,166 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 54 [2022-03-18 15:52:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:52:00,167 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-03-18 15:52:00,168 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-03-18 15:52:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-03-18 15:52:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 15:52:00,169 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:52:00,170 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:52:00,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-18 15:52:00,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:00,376 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:52:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:52:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 307258797, now seen corresponding path program 4 times [2022-03-18 15:52:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:52:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665507436] [2022-03-18 15:52:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:52:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:52:00,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:52:00,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745242159] [2022-03-18 15:52:00,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 15:52:00,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:52:00,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:52:00,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 15:52:00,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 15:52:00,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 15:52:00,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 15:52:00,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:52:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-18 15:52:00,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:52:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:52:00,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665507436] [2022-03-18 15:52:00,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:52:00,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745242159] [2022-03-18 15:52:00,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745242159] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:52:00,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:52:00,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-03-18 15:52:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251225809] [2022-03-18 15:52:00,780 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:52:00,781 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 15:52:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:52:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 15:52:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 15:52:00,782 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-03-18 15:52:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:52:00,883 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-03-18 15:52:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 15:52:00,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2022-03-18 15:52:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:52:00,886 INFO L225 Difference]: With dead ends: 51 [2022-03-18 15:52:00,887 INFO L226 Difference]: Without dead ends: 45 [2022-03-18 15:52:00,887 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-18 15:52:00,887 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:52:00,888 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 287 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:52:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-18 15:52:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-03-18 15:52:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 15:52:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-03-18 15:52:00,904 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 61 [2022-03-18 15:52:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:52:00,904 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-03-18 15:52:00,905 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-03-18 15:52:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-03-18 15:52:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 15:52:00,905 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:52:00,905 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:52:00,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 15:52:01,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:01,115 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:52:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:52:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1082774365, now seen corresponding path program 5 times [2022-03-18 15:52:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:52:01,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890193791] [2022-03-18 15:52:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:52:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:52:01,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:52:01,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62632567] [2022-03-18 15:52:01,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 15:52:01,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:01,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:52:01,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:52:01,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 15:52:15,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-18 15:52:15,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 15:52:15,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-18 15:52:15,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:52:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 15:52:16,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:52:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:52:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890193791] [2022-03-18 15:52:16,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:52:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62632567] [2022-03-18 15:52:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62632567] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:52:16,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:52:16,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-18 15:52:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076081912] [2022-03-18 15:52:16,190 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:52:16,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 15:52:16,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:52:16,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 15:52:16,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 15:52:16,191 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-18 15:52:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:52:16,300 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-03-18 15:52:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 15:52:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 68 [2022-03-18 15:52:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:52:16,301 INFO L225 Difference]: With dead ends: 54 [2022-03-18 15:52:16,301 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 15:52:16,301 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 15:52:16,302 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:52:16,302 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 339 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:52:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 15:52:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-03-18 15:52:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 13 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-18 15:52:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-03-18 15:52:16,319 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 68 [2022-03-18 15:52:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:52:16,319 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-03-18 15:52:16,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-18 15:52:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-03-18 15:52:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 15:52:16,323 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:52:16,323 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:52:16,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-18 15:52:16,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:16,533 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:52:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:52:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1692754003, now seen corresponding path program 6 times [2022-03-18 15:52:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:52:16,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024005951] [2022-03-18 15:52:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:52:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:52:16,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:52:16,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183508009] [2022-03-18 15:52:16,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 15:52:16,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:16,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:52:16,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:52:16,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 15:52:28,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-18 15:52:28,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 15:52:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-18 15:52:28,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:52:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-18 15:52:28,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:52:29,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:52:29,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024005951] [2022-03-18 15:52:29,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:52:29,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183508009] [2022-03-18 15:52:29,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183508009] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:52:29,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:52:29,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-03-18 15:52:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499210935] [2022-03-18 15:52:29,005 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:52:29,006 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 15:52:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:52:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 15:52:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-18 15:52:29,006 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-03-18 15:52:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:52:29,152 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-03-18 15:52:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 15:52:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 75 [2022-03-18 15:52:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:52:29,153 INFO L225 Difference]: With dead ends: 57 [2022-03-18 15:52:29,153 INFO L226 Difference]: Without dead ends: 51 [2022-03-18 15:52:29,153 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-03-18 15:52:29,154 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:52:29,154 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 395 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:52:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-18 15:52:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-03-18 15:52:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 14 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 15:52:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-03-18 15:52:29,161 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 75 [2022-03-18 15:52:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:52:29,161 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-03-18 15:52:29,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 9 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-03-18 15:52:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-03-18 15:52:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-18 15:52:29,162 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:52:29,162 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:52:29,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 15:52:29,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-18 15:52:29,362 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:52:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:52:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 615143773, now seen corresponding path program 7 times [2022-03-18 15:52:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:52:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137946299] [2022-03-18 15:52:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:52:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:52:29,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:52:29,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137770925] [2022-03-18 15:52:29,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 15:52:29,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:29,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:52:29,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:52:29,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 15:52:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 15:52:30,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-18 15:52:30,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:52:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 18 proven. 84 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-03-18 15:52:30,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:52:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:52:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137946299] [2022-03-18 15:52:30,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:52:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137770925] [2022-03-18 15:52:30,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137770925] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:52:30,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:52:30,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-03-18 15:52:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709995122] [2022-03-18 15:52:30,758 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:52:30,759 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 15:52:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:52:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 15:52:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-18 15:52:30,760 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-03-18 15:52:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:52:30,911 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-03-18 15:52:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 15:52:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 82 [2022-03-18 15:52:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:52:30,912 INFO L225 Difference]: With dead ends: 60 [2022-03-18 15:52:30,912 INFO L226 Difference]: Without dead ends: 54 [2022-03-18 15:52:30,912 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-03-18 15:52:30,912 INFO L912 BasicCegarLoop]: 48 mSDtfsCounter, 2 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:52:30,913 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 455 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:52:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-18 15:52:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-18 15:52:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 15:52:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-03-18 15:52:30,918 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 82 [2022-03-18 15:52:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:52:30,918 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-03-18 15:52:30,918 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 10 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-03-18 15:52:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-03-18 15:52:30,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 15:52:30,919 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:52:30,919 INFO L500 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:52:30,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-18 15:52:31,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 15:52:31,129 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:52:31,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:52:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1334355539, now seen corresponding path program 8 times [2022-03-18 15:52:31,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:52:31,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760099106] [2022-03-18 15:52:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:52:31,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:52:31,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:52:31,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740450470] [2022-03-18 15:52:31,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 15:52:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:52:31,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:52:31,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 15:52:39,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 15:52:39,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 15:52:39,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-18 15:52:39,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 15:52:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-03-18 15:52:39,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 15:52:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 15:52:39,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760099106] [2022-03-18 15:52:39,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 15:52:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740450470] [2022-03-18 15:52:39,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740450470] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 15:52:39,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 15:52:39,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-03-18 15:52:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519738809] [2022-03-18 15:52:39,638 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-18 15:52:39,638 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 15:52:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 15:52:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 15:52:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-03-18 15:52:39,639 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-03-18 15:52:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 15:52:39,771 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2022-03-18 15:52:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 15:52:39,772 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) Word has length 89 [2022-03-18 15:52:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 15:52:39,773 INFO L225 Difference]: With dead ends: 63 [2022-03-18 15:52:39,773 INFO L226 Difference]: Without dead ends: 57 [2022-03-18 15:52:39,773 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-18 15:52:39,773 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 15:52:39,773 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 519 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 15:52:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-18 15:52:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-03-18 15:52:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 16 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 15:52:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2022-03-18 15:52:39,778 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 89 [2022-03-18 15:52:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 15:52:39,779 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2022-03-18 15:52:39,779 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-03-18 15:52:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2022-03-18 15:52:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-18 15:52:39,779 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 15:52:39,779 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 15:52:39,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-18 15:52:39,989 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-18 15:52:39,989 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 15:52:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 15:52:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash 711483229, now seen corresponding path program 9 times [2022-03-18 15:52:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 15:52:39,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836649019] [2022-03-18 15:52:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 15:52:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 15:52:39,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 15:52:39,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387185746] [2022-03-18 15:52:39,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 15:52:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 15:52:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 15:52:39,999 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 15:52:40,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process