/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/bench/exp1x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:11:34,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:11:34,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:11:34,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:11:34,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:11:34,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:11:34,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:11:34,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:11:34,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:11:34,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:11:34,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:11:34,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:11:34,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:11:34,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:11:34,283 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:11:34,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:11:34,283 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:11:34,284 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:11:34,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:11:34,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:11:34,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:11:34,285 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:11:34,286 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:11:34,286 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:11:34,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:11:34,286 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:11:34,286 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:11:34,287 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:11:34,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:11:34,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:11:34,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:11:34,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:11:34,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:11:34,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:11:34,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:11:34,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:11:34,288 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:11:34,289 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:11:34,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:11:34,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:11:34,290 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:11:34,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:11:34,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:11:34,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:11:34,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:11:34,698 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:11:34,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench/exp1x3.wvr.c [2021-10-06 21:11:34,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22d731e66/d770529834fd4b27a052fd1f7919ff37/FLAG80c574970 [2021-10-06 21:11:35,476 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:11:35,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp1x3.wvr.c [2021-10-06 21:11:35,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22d731e66/d770529834fd4b27a052fd1f7919ff37/FLAG80c574970 [2021-10-06 21:11:35,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22d731e66/d770529834fd4b27a052fd1f7919ff37 [2021-10-06 21:11:35,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:11:35,853 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:11:35,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:11:35,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:11:35,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:11:35,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:11:35" (1/1) ... [2021-10-06 21:11:35,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3421fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:35, skipping insertion in model container [2021-10-06 21:11:35,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:11:35" (1/1) ... [2021-10-06 21:11:35,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:11:35,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:11:36,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp1x3.wvr.c[1802,1815] [2021-10-06 21:11:36,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:11:36,084 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:11:36,106 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench/exp1x3.wvr.c[1802,1815] [2021-10-06 21:11:36,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:11:36,125 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:11:36,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36 WrapperNode [2021-10-06 21:11:36,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:11:36,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:11:36,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:11:36,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:11:36,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:11:36,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:11:36,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:11:36,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:11:36,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:11:36,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:11:36,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:11:36,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:11:36,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (1/1) ... [2021-10-06 21:11:36,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:11:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:11:36,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:11:36,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:11:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:11:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:11:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:11:36,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:11:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:11:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:11:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:11:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:11:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:11:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:11:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:11:36,319 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:11:36,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:11:36,767 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:11:36,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:11:36 BoogieIcfgContainer [2021-10-06 21:11:36,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:11:36,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:11:36,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:11:36,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:11:36,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:11:35" (1/3) ... [2021-10-06 21:11:36,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f732f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:11:36, skipping insertion in model container [2021-10-06 21:11:36,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:11:36" (2/3) ... [2021-10-06 21:11:36,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f732f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:11:36, skipping insertion in model container [2021-10-06 21:11:36,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:11:36" (3/3) ... [2021-10-06 21:11:36,780 INFO L111 eAbstractionObserver]: Analyzing ICFG exp1x3.wvr.c [2021-10-06 21:11:36,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:11:36,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:11:36,802 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:11:36,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,867 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,867 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,879 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,879 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:11:36,893 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:11:36,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:11:36,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:11:36,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:11:37,015 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:11:37,032 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 82 transitions, 180 flow [2021-10-06 21:11:37,036 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 82 transitions, 180 flow [2021-10-06 21:11:37,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 180 flow [2021-10-06 21:11:37,119 INFO L129 PetriNetUnfolder]: 6/80 cut-off events. [2021-10-06 21:11:37,119 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:11:37,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-10-06 21:11:37,129 INFO L116 LiptonReduction]: Number of co-enabled transitions 348 [2021-10-06 21:11:46,866 INFO L131 LiptonReduction]: Checked pairs total: 458 [2021-10-06 21:11:46,866 INFO L133 LiptonReduction]: Total number of compositions: 85 [2021-10-06 21:11:46,877 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-06 21:11:46,890 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:11:46,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:46,900 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:11:46,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:46,907 INFO L82 PathProgramCache]: Analyzing trace with hash 317, now seen corresponding path program 1 times [2021-10-06 21:11:46,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:46,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554231705] [2021-10-06 21:11:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:46,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:46,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:46,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:11:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:47,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:11:47,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:47,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:47,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:47,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554231705] [2021-10-06 21:11:47,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554231705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:47,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:47,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:11:47,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298147073] [2021-10-06 21:11:47,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:11:47,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:11:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:11:47,063 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:47,081 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-06 21:11:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:11:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:11:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:47,094 INFO L225 Difference]: With dead ends: 36 [2021-10-06 21:11:47,095 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 21:11:47,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:11:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 21:11:47,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-06 21:11:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-06 21:11:47,134 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-06 21:11:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:47,134 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-06 21:11:47,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-06 21:11:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:11:47,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:47,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:11:47,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:11:47,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:47,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash 312993, now seen corresponding path program 1 times [2021-10-06 21:11:47,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:47,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747750951] [2021-10-06 21:11:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:47,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:47,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:47,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:11:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:47,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:11:47,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:47,517 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 21:11:47,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-06 21:11:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:47,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:47,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:47,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747750951] [2021-10-06 21:11:47,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747750951] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:47,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:47,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:11:47,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488646397] [2021-10-06 21:11:47,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:11:47,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:47,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:11:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:11:47,610 INFO L87 Difference]: Start difference. First operand 36 states and 80 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:47,657 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-06 21:11:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:47,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:11:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:47,663 INFO L225 Difference]: With dead ends: 32 [2021-10-06 21:11:47,663 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:11:47,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:11:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:11:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:11:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-06 21:11:47,677 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-06 21:11:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:47,678 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-06 21:11:47,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-06 21:11:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:11:47,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:47,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:11:47,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:47,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:47,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 312995, now seen corresponding path program 1 times [2021-10-06 21:11:47,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:47,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407924360] [2021-10-06 21:11:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:47,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:47,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:47,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:47,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:11:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:47,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:11:47,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:48,048 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:11:48,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:11:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:48,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:48,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:48,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407924360] [2021-10-06 21:11:48,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407924360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:48,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:48,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:48,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401675825] [2021-10-06 21:11:48,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:48,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:48,194 INFO L87 Difference]: Start difference. First operand 32 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:48,214 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-06 21:11:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:48,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:11:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:48,216 INFO L225 Difference]: With dead ends: 28 [2021-10-06 21:11:48,217 INFO L226 Difference]: Without dead ends: 28 [2021-10-06 21:11:48,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-06 21:11:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-06 21:11:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-06 21:11:48,223 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-06 21:11:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:48,224 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-06 21:11:48,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-06 21:11:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:11:48,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:48,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:11:48,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:48,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:48,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:48,446 INFO L82 PathProgramCache]: Analyzing trace with hash 300793722, now seen corresponding path program 1 times [2021-10-06 21:11:48,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:48,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095575890] [2021-10-06 21:11:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:48,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:48,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:48,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:48,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:11:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:48,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:11:48,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:48,533 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 21:11:48,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-06 21:11:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:48,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:48,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095575890] [2021-10-06 21:11:48,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095575890] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:48,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:48,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:11:48,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299925044] [2021-10-06 21:11:48,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:11:48,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:11:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:11:48,610 INFO L87 Difference]: Start difference. First operand 28 states and 64 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:48,639 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-06 21:11:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:11:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:48,645 INFO L225 Difference]: With dead ends: 24 [2021-10-06 21:11:48,645 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 21:11:48,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:11:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 21:11:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 21:11:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-06 21:11:48,659 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-06 21:11:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:48,661 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-06 21:11:48,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-06 21:11:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:11:48,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:48,674 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:11:48,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:48,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:48,887 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash 300793723, now seen corresponding path program 1 times [2021-10-06 21:11:48,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:48,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011809565] [2021-10-06 21:11:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:48,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:48,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:48,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:48,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:11:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:48,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:11:48,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:49,078 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:11:49,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 47 [2021-10-06 21:11:49,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2021-10-06 21:11:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:49,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:49,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:49,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011809565] [2021-10-06 21:11:49,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011809565] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:49,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:49,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:49,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594009217] [2021-10-06 21:11:49,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:49,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:49,362 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:49,379 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-06 21:11:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:49,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:11:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:49,381 INFO L225 Difference]: With dead ends: 20 [2021-10-06 21:11:49,381 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 21:11:49,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 21:11:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 21:11:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-06 21:11:49,385 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-06 21:11:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:49,385 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-06 21:11:49,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-06 21:11:49,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:11:49,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:49,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:49,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:49,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:49,588 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:49,588 INFO L82 PathProgramCache]: Analyzing trace with hash 605642453, now seen corresponding path program 1 times [2021-10-06 21:11:49,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:49,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103076242] [2021-10-06 21:11:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:49,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:49,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:49,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:49,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:11:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:49,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:11:49,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:49,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:49,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:49,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103076242] [2021-10-06 21:11:49,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103076242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:49,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:49,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:49,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524780634] [2021-10-06 21:11:49,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:49,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:49,827 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:49,845 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-06 21:11:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:49,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 21:11:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:49,848 INFO L225 Difference]: With dead ends: 37 [2021-10-06 21:11:49,848 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:11:49,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:11:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:11:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-06 21:11:49,854 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-06 21:11:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:49,855 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-06 21:11:49,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-06 21:11:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:11:49,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:49,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:49,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:50,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:50,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1095228700, now seen corresponding path program 1 times [2021-10-06 21:11:50,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:50,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095524927] [2021-10-06 21:11:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:50,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:50,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:50,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:50,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:11:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:50,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:11:50,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:50,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:50,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:50,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095524927] [2021-10-06 21:11:50,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095524927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:50,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:50,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:11:50,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237092212] [2021-10-06 21:11:50,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:11:50,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:11:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:50,449 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:50,675 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2021-10-06 21:11:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:11:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:11:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:50,677 INFO L225 Difference]: With dead ends: 101 [2021-10-06 21:11:50,678 INFO L226 Difference]: Without dead ends: 96 [2021-10-06 21:11:50,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 154.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:11:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-06 21:11:50,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 46. [2021-10-06 21:11:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 45 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2021-10-06 21:11:50,686 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 12 [2021-10-06 21:11:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:50,686 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2021-10-06 21:11:50,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2021-10-06 21:11:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:11:50,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:50,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:50,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:50,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash 216170569, now seen corresponding path program 1 times [2021-10-06 21:11:50,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:50,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288944079] [2021-10-06 21:11:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:50,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:50,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:50,906 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:50,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:11:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:50,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:11:50,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:51,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:51,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:51,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288944079] [2021-10-06 21:11:51,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288944079] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:51,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:51,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-06 21:11:51,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387948724] [2021-10-06 21:11:51,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:51,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:11:51,182 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:51,241 INFO L93 Difference]: Finished difference Result 52 states and 115 transitions. [2021-10-06 21:11:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:11:51,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:11:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:51,243 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:11:51,243 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 21:11:51,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:51,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 21:11:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-06 21:11:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.395348837209302) internal successors, (103), 43 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 103 transitions. [2021-10-06 21:11:51,249 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 103 transitions. Word has length 12 [2021-10-06 21:11:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:51,249 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 103 transitions. [2021-10-06 21:11:51,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 103 transitions. [2021-10-06 21:11:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:11:51,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:51,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:51,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-06 21:11:51,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:51,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1580323921, now seen corresponding path program 2 times [2021-10-06 21:11:51,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:51,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002100620] [2021-10-06 21:11:51,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:51,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:51,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:51,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:51,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:11:51,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:51,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:51,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:11:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:51,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:51,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:51,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002100620] [2021-10-06 21:11:51,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002100620] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:51,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:51,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:11:51,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293375794] [2021-10-06 21:11:51,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:11:51,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:11:51,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:51,809 INFO L87 Difference]: Start difference. First operand 44 states and 103 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:52,040 INFO L93 Difference]: Finished difference Result 93 states and 197 transitions. [2021-10-06 21:11:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:11:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:11:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:52,042 INFO L225 Difference]: With dead ends: 93 [2021-10-06 21:11:52,042 INFO L226 Difference]: Without dead ends: 88 [2021-10-06 21:11:52,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:11:52,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-06 21:11:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2021-10-06 21:11:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 141 transitions. [2021-10-06 21:11:52,050 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 141 transitions. Word has length 12 [2021-10-06 21:11:52,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:52,050 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 141 transitions. [2021-10-06 21:11:52,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:52,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 141 transitions. [2021-10-06 21:11:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:11:52,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:52,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:52,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:52,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:52,265 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1527245184, now seen corresponding path program 1 times [2021-10-06 21:11:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:52,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598557234] [2021-10-06 21:11:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:52,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:52,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:52,272 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:52,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:11:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:52,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:11:52,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:52,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:52,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:52,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598557234] [2021-10-06 21:11:52,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598557234] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:52,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:52,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:11:52,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745041512] [2021-10-06 21:11:52,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:11:52,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:11:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:52,695 INFO L87 Difference]: Start difference. First operand 56 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:54,081 INFO L93 Difference]: Finished difference Result 102 states and 234 transitions. [2021-10-06 21:11:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:54,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:11:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:54,089 INFO L225 Difference]: With dead ends: 102 [2021-10-06 21:11:54,090 INFO L226 Difference]: Without dead ends: 92 [2021-10-06 21:11:54,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-06 21:11:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 64. [2021-10-06 21:11:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.6984126984126986) internal successors, (170), 63 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 170 transitions. [2021-10-06 21:11:54,097 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 170 transitions. Word has length 13 [2021-10-06 21:11:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:54,097 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 170 transitions. [2021-10-06 21:11:54,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 170 transitions. [2021-10-06 21:11:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:11:54,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:54,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:54,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:54,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:54,311 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:54,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1992168318, now seen corresponding path program 2 times [2021-10-06 21:11:54,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:54,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025983542] [2021-10-06 21:11:54,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:54,313 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:54,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:54,314 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:54,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:11:54,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:54,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:54,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:11:54,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:54,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:54,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:54,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025983542] [2021-10-06 21:11:54,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025983542] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:54,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:54,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:11:54,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114869362] [2021-10-06 21:11:54,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:11:54,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:54,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:11:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:54,745 INFO L87 Difference]: Start difference. First operand 64 states and 170 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:56,516 INFO L93 Difference]: Finished difference Result 106 states and 255 transitions. [2021-10-06 21:11:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:56,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:11:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:56,518 INFO L225 Difference]: With dead ends: 106 [2021-10-06 21:11:56,518 INFO L226 Difference]: Without dead ends: 96 [2021-10-06 21:11:56,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:11:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-06 21:11:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-10-06 21:11:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.7971014492753623) internal successors, (193), 69 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 193 transitions. [2021-10-06 21:11:56,529 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 193 transitions. Word has length 13 [2021-10-06 21:11:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:56,529 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 193 transitions. [2021-10-06 21:11:56,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 193 transitions. [2021-10-06 21:11:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:11:56,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:56,531 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:56,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-06 21:11:56,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:56,743 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash 874134121, now seen corresponding path program 3 times [2021-10-06 21:11:56,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:56,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624578731] [2021-10-06 21:11:56,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:11:56,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:56,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:56,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:56,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:11:56,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:11:56,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:56,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:11:56,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:57,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:57,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:57,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624578731] [2021-10-06 21:11:57,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624578731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:57,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:57,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:11:57,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801587610] [2021-10-06 21:11:57,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:11:57,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:11:57,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:57,624 INFO L87 Difference]: Start difference. First operand 70 states and 193 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:59,146 INFO L93 Difference]: Finished difference Result 144 states and 354 transitions. [2021-10-06 21:11:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:11:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:11:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:59,149 INFO L225 Difference]: With dead ends: 144 [2021-10-06 21:11:59,149 INFO L226 Difference]: Without dead ends: 144 [2021-10-06 21:11:59,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1362.4ms TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:11:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-06 21:11:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-10-06 21:11:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.8241758241758244) internal successors, (257), 91 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 257 transitions. [2021-10-06 21:11:59,158 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 257 transitions. Word has length 14 [2021-10-06 21:11:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:59,158 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 257 transitions. [2021-10-06 21:11:59,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 257 transitions. [2021-10-06 21:11:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:11:59,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:59,160 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:59,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:59,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:59,373 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:11:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1422161500, now seen corresponding path program 4 times [2021-10-06 21:11:59,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:59,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248714169] [2021-10-06 21:11:59,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:11:59,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:59,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:59,376 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:59,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:11:59,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:11:59,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:59,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:11:59,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:59,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:00,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:00,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248714169] [2021-10-06 21:12:00,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248714169] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:00,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:00,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:00,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880525542] [2021-10-06 21:12:00,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:00,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:00,150 INFO L87 Difference]: Start difference. First operand 92 states and 257 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:01,292 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2021-10-06 21:12:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:12:01,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:12:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:01,295 INFO L225 Difference]: With dead ends: 144 [2021-10-06 21:12:01,295 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 21:12:01,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1119.5ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:12:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 21:12:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 102. [2021-10-06 21:12:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.722772277227723) internal successors, (275), 101 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 275 transitions. [2021-10-06 21:12:01,303 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 275 transitions. Word has length 14 [2021-10-06 21:12:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:01,303 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 275 transitions. [2021-10-06 21:12:01,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 275 transitions. [2021-10-06 21:12:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:12:01,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:01,305 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:01,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:01,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:01,518 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash -457437235, now seen corresponding path program 5 times [2021-10-06 21:12:01,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:01,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363060460] [2021-10-06 21:12:01,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:12:01,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:01,522 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:12:01,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:12:01,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:01,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:01,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:01,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:02,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:02,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363060460] [2021-10-06 21:12:02,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363060460] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:02,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:02,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:02,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037140596] [2021-10-06 21:12:02,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:02,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:02,286 INFO L87 Difference]: Start difference. First operand 102 states and 275 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:04,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:04,094 INFO L93 Difference]: Finished difference Result 234 states and 544 transitions. [2021-10-06 21:12:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:12:04,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:12:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:04,097 INFO L225 Difference]: With dead ends: 234 [2021-10-06 21:12:04,097 INFO L226 Difference]: Without dead ends: 234 [2021-10-06 21:12:04,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1192.3ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:12:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-06 21:12:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 114. [2021-10-06 21:12:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.893805309734513) internal successors, (327), 113 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 327 transitions. [2021-10-06 21:12:04,106 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 327 transitions. Word has length 14 [2021-10-06 21:12:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:04,106 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 327 transitions. [2021-10-06 21:12:04,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 327 transitions. [2021-10-06 21:12:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:12:04,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:04,108 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:04,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:04,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:04,320 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:04,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:04,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1070278031, now seen corresponding path program 6 times [2021-10-06 21:12:04,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:04,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878108566] [2021-10-06 21:12:04,322 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:12:04,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:04,323 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:04,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:12:04,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:12:04,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:04,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:04,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:04,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:05,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:05,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878108566] [2021-10-06 21:12:05,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878108566] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:05,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:05,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:05,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785921185] [2021-10-06 21:12:05,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:05,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:05,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:05,107 INFO L87 Difference]: Start difference. First operand 114 states and 327 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:06,805 INFO L93 Difference]: Finished difference Result 272 states and 641 transitions. [2021-10-06 21:12:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:12:06,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:12:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:06,809 INFO L225 Difference]: With dead ends: 272 [2021-10-06 21:12:06,810 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 21:12:06,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1166.8ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:12:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 21:12:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 126. [2021-10-06 21:12:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.0) internal successors, (375), 125 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 375 transitions. [2021-10-06 21:12:06,825 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 375 transitions. Word has length 14 [2021-10-06 21:12:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:06,827 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 375 transitions. [2021-10-06 21:12:06,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 375 transitions. [2021-10-06 21:12:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:12:06,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:06,832 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:06,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:07,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:07,045 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:07,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1066115509, now seen corresponding path program 7 times [2021-10-06 21:12:07,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:07,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023051690] [2021-10-06 21:12:07,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:12:07,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:07,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:07,049 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:07,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:12:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:07,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:12:07,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:07,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:07,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:07,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023051690] [2021-10-06 21:12:07,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023051690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:07,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:07,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:07,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994082645] [2021-10-06 21:12:07,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:07,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:07,809 INFO L87 Difference]: Start difference. First operand 126 states and 375 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:09,103 INFO L93 Difference]: Finished difference Result 206 states and 525 transitions. [2021-10-06 21:12:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:12:09,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:12:09,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:09,106 INFO L225 Difference]: With dead ends: 206 [2021-10-06 21:12:09,106 INFO L226 Difference]: Without dead ends: 200 [2021-10-06 21:12:09,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1097.8ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:12:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-06 21:12:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 132. [2021-10-06 21:12:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.9923664122137406) internal successors, (392), 131 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 392 transitions. [2021-10-06 21:12:09,114 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 392 transitions. Word has length 14 [2021-10-06 21:12:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:09,115 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 392 transitions. [2021-10-06 21:12:09,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 392 transitions. [2021-10-06 21:12:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:12:09,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:09,116 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:09,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:09,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:09,332 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:09,333 INFO L82 PathProgramCache]: Analyzing trace with hash 937077327, now seen corresponding path program 8 times [2021-10-06 21:12:09,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:09,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681602697] [2021-10-06 21:12:09,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:09,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:09,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:09,335 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:09,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:12:09,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:09,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:09,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:12:09,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:09,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:10,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:10,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681602697] [2021-10-06 21:12:10,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681602697] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:10,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:10,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:12:10,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311758015] [2021-10-06 21:12:10,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:10,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:10,118 INFO L87 Difference]: Start difference. First operand 132 states and 392 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:11,022 INFO L93 Difference]: Finished difference Result 156 states and 430 transitions. [2021-10-06 21:12:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:12:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:12:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:11,024 INFO L225 Difference]: With dead ends: 156 [2021-10-06 21:12:11,024 INFO L226 Difference]: Without dead ends: 152 [2021-10-06 21:12:11,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 906.3ms TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:12:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-06 21:12:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 134. [2021-10-06 21:12:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.954887218045113) internal successors, (393), 133 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 393 transitions. [2021-10-06 21:12:11,030 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 393 transitions. Word has length 14 [2021-10-06 21:12:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:11,031 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 393 transitions. [2021-10-06 21:12:11,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 393 transitions. [2021-10-06 21:12:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:12:11,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:11,032 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:11,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:11,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:11,245 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:11,246 INFO L82 PathProgramCache]: Analyzing trace with hash -50522315, now seen corresponding path program 9 times [2021-10-06 21:12:11,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:11,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516386566] [2021-10-06 21:12:11,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:12:11,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:11,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:11,248 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:11,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:12:11,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:12:11,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:11,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:11,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:11,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:11,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:11,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516386566] [2021-10-06 21:12:11,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516386566] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:11,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:11,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:12:11,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191647937] [2021-10-06 21:12:11,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:11,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:11,865 INFO L87 Difference]: Start difference. First operand 134 states and 393 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:14,077 INFO L93 Difference]: Finished difference Result 238 states and 615 transitions. [2021-10-06 21:12:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:12:14,077 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:12:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:14,079 INFO L225 Difference]: With dead ends: 238 [2021-10-06 21:12:14,080 INFO L226 Difference]: Without dead ends: 228 [2021-10-06 21:12:14,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 217.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-06 21:12:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 144. [2021-10-06 21:12:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 3.041958041958042) internal successors, (435), 143 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 435 transitions. [2021-10-06 21:12:14,089 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 435 transitions. Word has length 15 [2021-10-06 21:12:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:14,089 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 435 transitions. [2021-10-06 21:12:14,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 435 transitions. [2021-10-06 21:12:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:12:14,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:14,090 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:14,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:14,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:14,303 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:14,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2054038396, now seen corresponding path program 10 times [2021-10-06 21:12:14,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:14,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996546671] [2021-10-06 21:12:14,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:12:14,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:14,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:14,307 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:14,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:12:14,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:12:14,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:14,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:12:14,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:14,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:15,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:15,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996546671] [2021-10-06 21:12:15,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996546671] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:15,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:15,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:12:15,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248808841] [2021-10-06 21:12:15,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:12:15,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:12:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:12:15,506 INFO L87 Difference]: Start difference. First operand 144 states and 435 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:20,507 INFO L93 Difference]: Finished difference Result 308 states and 778 transitions. [2021-10-06 21:12:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:12:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:12:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:20,511 INFO L225 Difference]: With dead ends: 308 [2021-10-06 21:12:20,511 INFO L226 Difference]: Without dead ends: 308 [2021-10-06 21:12:20,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2579.0ms TimeCoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:12:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-06 21:12:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 168. [2021-10-06 21:12:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.1676646706586826) internal successors, (529), 167 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 529 transitions. [2021-10-06 21:12:20,522 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 529 transitions. Word has length 15 [2021-10-06 21:12:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:20,523 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 529 transitions. [2021-10-06 21:12:20,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 529 transitions. [2021-10-06 21:12:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:12:20,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:20,524 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:20,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:20,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:20,737 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2069565967, now seen corresponding path program 11 times [2021-10-06 21:12:20,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:20,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171790762] [2021-10-06 21:12:20,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:12:20,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:20,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:20,740 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:20,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:12:20,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:12:20,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:20,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:20,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:21,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:21,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:21,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171790762] [2021-10-06 21:12:21,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171790762] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:21,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:21,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:12:21,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240268883] [2021-10-06 21:12:21,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:21,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:21,551 INFO L87 Difference]: Start difference. First operand 168 states and 529 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:23,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:23,471 INFO L93 Difference]: Finished difference Result 304 states and 829 transitions. [2021-10-06 21:12:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:12:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:12:23,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:23,475 INFO L225 Difference]: With dead ends: 304 [2021-10-06 21:12:23,475 INFO L226 Difference]: Without dead ends: 294 [2021-10-06 21:12:23,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 365.3ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-06 21:12:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 186. [2021-10-06 21:12:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 3.2972972972972974) internal successors, (610), 185 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 610 transitions. [2021-10-06 21:12:23,487 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 610 transitions. Word has length 15 [2021-10-06 21:12:23,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:23,487 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 610 transitions. [2021-10-06 21:12:23,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 610 transitions. [2021-10-06 21:12:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:12:23,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:23,504 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:23,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-06 21:12:23,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:23,722 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2126395910, now seen corresponding path program 12 times [2021-10-06 21:12:23,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:23,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012733934] [2021-10-06 21:12:23,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:12:23,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:23,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:23,726 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:23,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:12:23,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:12:23,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:12:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:24,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:24,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:24,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012733934] [2021-10-06 21:12:24,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012733934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:24,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:24,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:12:24,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892822434] [2021-10-06 21:12:24,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:12:24,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:12:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:12:25,000 INFO L87 Difference]: Start difference. First operand 186 states and 610 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:28,894 INFO L93 Difference]: Finished difference Result 318 states and 866 transitions. [2021-10-06 21:12:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:12:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:12:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:28,897 INFO L225 Difference]: With dead ends: 318 [2021-10-06 21:12:28,897 INFO L226 Difference]: Without dead ends: 318 [2021-10-06 21:12:28,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1738.0ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:12:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-06 21:12:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 190. [2021-10-06 21:12:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 3.291005291005291) internal successors, (622), 189 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 622 transitions. [2021-10-06 21:12:28,908 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 622 transitions. Word has length 15 [2021-10-06 21:12:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:28,912 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 622 transitions. [2021-10-06 21:12:28,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 622 transitions. [2021-10-06 21:12:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:12:28,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:28,914 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:28,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:29,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:29,124 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2128796879, now seen corresponding path program 13 times [2021-10-06 21:12:29,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:29,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741683232] [2021-10-06 21:12:29,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:12:29,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:29,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:29,127 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:29,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:12:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:29,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:29,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:29,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:29,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:29,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741683232] [2021-10-06 21:12:29,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741683232] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:29,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:29,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:12:29,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048114244] [2021-10-06 21:12:29,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:29,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:29,954 INFO L87 Difference]: Start difference. First operand 190 states and 622 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:34,088 INFO L93 Difference]: Finished difference Result 294 states and 804 transitions. [2021-10-06 21:12:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:12:34,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:12:34,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:34,092 INFO L225 Difference]: With dead ends: 294 [2021-10-06 21:12:34,092 INFO L226 Difference]: Without dead ends: 284 [2021-10-06 21:12:34,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 378.2ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-06 21:12:34,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 188. [2021-10-06 21:12:34,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 3.27807486631016) internal successors, (613), 187 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 613 transitions. [2021-10-06 21:12:34,102 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 613 transitions. Word has length 15 [2021-10-06 21:12:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:34,102 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 613 transitions. [2021-10-06 21:12:34,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 613 transitions. [2021-10-06 21:12:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:12:34,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:34,104 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:34,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:34,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:34,317 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash -396503921, now seen corresponding path program 14 times [2021-10-06 21:12:34,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:34,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814204152] [2021-10-06 21:12:34,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:34,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:34,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:34,321 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:34,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:12:34,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:34,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:34,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:12:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:34,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:35,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:35,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814204152] [2021-10-06 21:12:35,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814204152] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:35,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:35,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:12:35,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950718818] [2021-10-06 21:12:35,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:35,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:35,097 INFO L87 Difference]: Start difference. First operand 188 states and 613 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:37,590 INFO L93 Difference]: Finished difference Result 270 states and 804 transitions. [2021-10-06 21:12:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:12:37,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:12:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:37,594 INFO L225 Difference]: With dead ends: 270 [2021-10-06 21:12:37,594 INFO L226 Difference]: Without dead ends: 260 [2021-10-06 21:12:37,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 300.0ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-06 21:12:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 208. [2021-10-06 21:12:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.3381642512077296) internal successors, (691), 207 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 691 transitions. [2021-10-06 21:12:37,604 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 691 transitions. Word has length 15 [2021-10-06 21:12:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:37,605 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 691 transitions. [2021-10-06 21:12:37,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 691 transitions. [2021-10-06 21:12:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:12:37,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:37,606 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:37,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:37,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:37,820 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 57690398, now seen corresponding path program 15 times [2021-10-06 21:12:37,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:37,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027758021] [2021-10-06 21:12:37,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:12:37,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:37,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:37,823 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:37,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:12:38,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:12:38,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:38,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:12:38,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:38,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:39,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:39,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027758021] [2021-10-06 21:12:39,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027758021] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:39,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:39,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:12:39,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933950687] [2021-10-06 21:12:39,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:12:39,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:12:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:12:39,073 INFO L87 Difference]: Start difference. First operand 208 states and 691 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:42,494 INFO L93 Difference]: Finished difference Result 464 states and 1227 transitions. [2021-10-06 21:12:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:12:42,495 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:12:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:42,499 INFO L225 Difference]: With dead ends: 464 [2021-10-06 21:12:42,499 INFO L226 Difference]: Without dead ends: 464 [2021-10-06 21:12:42,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2848.3ms TimeCoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:12:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-06 21:12:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 250. [2021-10-06 21:12:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.42570281124498) internal successors, (853), 249 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 853 transitions. [2021-10-06 21:12:42,513 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 853 transitions. Word has length 16 [2021-10-06 21:12:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:42,513 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 853 transitions. [2021-10-06 21:12:42,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 853 transitions. [2021-10-06 21:12:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:12:42,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:42,515 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:42,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-06 21:12:42,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:42,728 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1585405664, now seen corresponding path program 16 times [2021-10-06 21:12:42,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:42,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692896229] [2021-10-06 21:12:42,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:12:42,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:42,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:42,731 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:42,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:12:42,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:12:42,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:42,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:12:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:43,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:44,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:44,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692896229] [2021-10-06 21:12:44,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692896229] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:44,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:44,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:12:44,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195139794] [2021-10-06 21:12:44,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:12:44,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:12:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:12:44,400 INFO L87 Difference]: Start difference. First operand 250 states and 853 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:53,389 INFO L93 Difference]: Finished difference Result 476 states and 1379 transitions. [2021-10-06 21:12:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:12:53,390 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:12:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:53,394 INFO L225 Difference]: With dead ends: 476 [2021-10-06 21:12:53,395 INFO L226 Difference]: Without dead ends: 476 [2021-10-06 21:12:53,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4616.5ms TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:12:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-06 21:12:53,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 286. [2021-10-06 21:12:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 3.5403508771929824) internal successors, (1009), 285 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 1009 transitions. [2021-10-06 21:12:53,411 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 1009 transitions. Word has length 16 [2021-10-06 21:12:53,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:53,411 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 1009 transitions. [2021-10-06 21:12:53,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 1009 transitions. [2021-10-06 21:12:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:12:53,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:53,413 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:53,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:53,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:53,626 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:12:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1640707742, now seen corresponding path program 17 times [2021-10-06 21:12:53,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:53,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723513430] [2021-10-06 21:12:53,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:12:53,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:53,629 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:53,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:12:53,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:12:53,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:53,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:12:53,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:54,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:12:54,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:54,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723513430] [2021-10-06 21:12:54,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723513430] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:54,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:54,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:12:54,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682962165] [2021-10-06 21:12:54,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:12:54,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:12:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:12:54,959 INFO L87 Difference]: Start difference. First operand 286 states and 1009 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:07,108 INFO L93 Difference]: Finished difference Result 540 states and 1573 transitions. [2021-10-06 21:13:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:13:07,109 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:13:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:07,113 INFO L225 Difference]: With dead ends: 540 [2021-10-06 21:13:07,113 INFO L226 Difference]: Without dead ends: 540 [2021-10-06 21:13:07,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 7621.0ms TimeCoverageRelationStatistics Valid=304, Invalid=1254, Unknown=2, NotChecked=0, Total=1560 [2021-10-06 21:13:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-10-06 21:13:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 320. [2021-10-06 21:13:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.6300940438871474) internal successors, (1158), 319 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1158 transitions. [2021-10-06 21:13:07,130 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1158 transitions. Word has length 16 [2021-10-06 21:13:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:07,130 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 1158 transitions. [2021-10-06 21:13:07,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1158 transitions. [2021-10-06 21:13:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:13:07,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:07,132 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:07,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:07,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:07,346 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:07,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1679887603, now seen corresponding path program 18 times [2021-10-06 21:13:07,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:07,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647388268] [2021-10-06 21:13:07,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:13:07,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:07,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:07,350 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:07,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:13:07,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:13:07,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:07,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:07,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:07,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:08,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:08,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647388268] [2021-10-06 21:13:08,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647388268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:08,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:08,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:13:08,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424091400] [2021-10-06 21:13:08,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:08,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:08,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:08,504 INFO L87 Difference]: Start difference. First operand 320 states and 1158 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:11,269 INFO L93 Difference]: Finished difference Result 488 states and 1476 transitions. [2021-10-06 21:13:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:13:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:13:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:11,274 INFO L225 Difference]: With dead ends: 488 [2021-10-06 21:13:11,275 INFO L226 Difference]: Without dead ends: 482 [2021-10-06 21:13:11,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1959.1ms TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:13:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-06 21:13:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 328. [2021-10-06 21:13:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.5902140672782874) internal successors, (1174), 327 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1174 transitions. [2021-10-06 21:13:11,291 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1174 transitions. Word has length 16 [2021-10-06 21:13:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:11,291 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1174 transitions. [2021-10-06 21:13:11,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1174 transitions. [2021-10-06 21:13:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:13:11,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:11,293 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:11,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:11,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:11,501 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1888811221, now seen corresponding path program 19 times [2021-10-06 21:13:11,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:11,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634451299] [2021-10-06 21:13:11,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:13:11,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:11,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:11,504 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:11,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:13:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:11,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:13:11,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:12,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:13,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:13,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634451299] [2021-10-06 21:13:13,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634451299] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:13,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:13,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:13:13,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573484203] [2021-10-06 21:13:13,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:13,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:13,087 INFO L87 Difference]: Start difference. First operand 328 states and 1174 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:19,652 INFO L93 Difference]: Finished difference Result 530 states and 1566 transitions. [2021-10-06 21:13:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:13:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:13:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:19,656 INFO L225 Difference]: With dead ends: 530 [2021-10-06 21:13:19,657 INFO L226 Difference]: Without dead ends: 522 [2021-10-06 21:13:19,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 6216.4ms TimeCoverageRelationStatistics Valid=436, Invalid=1634, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:13:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-06 21:13:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 328. [2021-10-06 21:13:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.5688073394495414) internal successors, (1167), 327 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1167 transitions. [2021-10-06 21:13:19,672 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1167 transitions. Word has length 16 [2021-10-06 21:13:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:19,673 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1167 transitions. [2021-10-06 21:13:19,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1167 transitions. [2021-10-06 21:13:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:13:19,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:19,675 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:19,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:19,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:19,888 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1327587405, now seen corresponding path program 20 times [2021-10-06 21:13:19,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:19,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787252197] [2021-10-06 21:13:19,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:13:19,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:19,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:19,891 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:19,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:13:20,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:13:20,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:20,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:13:20,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:20,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:21,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:21,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787252197] [2021-10-06 21:13:21,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787252197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:21,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:21,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:13:21,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847309397] [2021-10-06 21:13:21,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:13:21,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:13:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:13:21,704 INFO L87 Difference]: Start difference. First operand 328 states and 1167 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:52,476 INFO L93 Difference]: Finished difference Result 648 states and 1866 transitions. [2021-10-06 21:13:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:13:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:13:52,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:52,483 INFO L225 Difference]: With dead ends: 648 [2021-10-06 21:13:52,483 INFO L226 Difference]: Without dead ends: 648 [2021-10-06 21:13:52,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 9943.5ms TimeCoverageRelationStatistics Valid=384, Invalid=1174, Unknown=2, NotChecked=0, Total=1560 [2021-10-06 21:13:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-10-06 21:13:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 358. [2021-10-06 21:13:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.630252100840336) internal successors, (1296), 357 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1296 transitions. [2021-10-06 21:13:52,513 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1296 transitions. Word has length 16 [2021-10-06 21:13:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:52,514 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1296 transitions. [2021-10-06 21:13:52,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1296 transitions. [2021-10-06 21:13:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:13:52,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:52,516 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:52,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:52,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:52,732 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:52,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1751078210, now seen corresponding path program 21 times [2021-10-06 21:13:52,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:52,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035254908] [2021-10-06 21:13:52,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:13:52,733 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:52,735 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:52,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:13:53,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:13:53,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:53,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:53,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:53,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:54,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:54,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035254908] [2021-10-06 21:13:54,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035254908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:13:54,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:13:54,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:13:54,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617970598] [2021-10-06 21:13:54,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:54,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:54,063 INFO L87 Difference]: Start difference. First operand 358 states and 1296 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:58,685 INFO L93 Difference]: Finished difference Result 474 states and 1491 transitions. [2021-10-06 21:13:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:13:58,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:13:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:58,689 INFO L225 Difference]: With dead ends: 474 [2021-10-06 21:13:58,689 INFO L226 Difference]: Without dead ends: 460 [2021-10-06 21:13:58,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2096.2ms TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:13:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-06 21:13:58,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 360. [2021-10-06 21:13:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 3.618384401114206) internal successors, (1299), 359 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1299 transitions. [2021-10-06 21:13:58,702 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1299 transitions. Word has length 16 [2021-10-06 21:13:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:58,703 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 1299 transitions. [2021-10-06 21:13:58,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1299 transitions. [2021-10-06 21:13:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:13:58,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:58,705 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:58,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:58,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:58,915 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:58,916 INFO L82 PathProgramCache]: Analyzing trace with hash -825362146, now seen corresponding path program 22 times [2021-10-06 21:13:58,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:58,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096600029] [2021-10-06 21:13:58,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:58,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:58,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:58,919 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:58,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:13:59,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:59,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:13:59,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:59,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:00,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:00,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096600029] [2021-10-06 21:14:00,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096600029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:00,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:00,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:14:00,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574698601] [2021-10-06 21:14:00,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:14:00,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:14:00,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:14:00,580 INFO L87 Difference]: Start difference. First operand 360 states and 1299 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:28,559 INFO L93 Difference]: Finished difference Result 662 states and 1939 transitions. [2021-10-06 21:14:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:14:28,560 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:14:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:28,565 INFO L225 Difference]: With dead ends: 662 [2021-10-06 21:14:28,565 INFO L226 Difference]: Without dead ends: 662 [2021-10-06 21:14:28,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 10851.7ms TimeCoverageRelationStatistics Valid=383, Invalid=1175, Unknown=2, NotChecked=0, Total=1560 [2021-10-06 21:14:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-06 21:14:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 400. [2021-10-06 21:14:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.6766917293233083) internal successors, (1467), 399 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1467 transitions. [2021-10-06 21:14:28,584 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1467 transitions. Word has length 16 [2021-10-06 21:14:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:28,584 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1467 transitions. [2021-10-06 21:14:28,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1467 transitions. [2021-10-06 21:14:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:14:28,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:28,586 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:28,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-06 21:14:28,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:28,790 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:14:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash -829524668, now seen corresponding path program 23 times [2021-10-06 21:14:28,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:28,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307374356] [2021-10-06 21:14:28,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:14:28,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:28,794 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:28,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:14:29,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:14:29,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:29,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:14:29,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:29,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:30,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:30,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307374356] [2021-10-06 21:14:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307374356] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:30,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:14:30,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341700924] [2021-10-06 21:14:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:14:30,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:14:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:14:30,077 INFO L87 Difference]: Start difference. First operand 400 states and 1467 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:33,967 INFO L93 Difference]: Finished difference Result 522 states and 1683 transitions. [2021-10-06 21:14:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:14:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:14:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:33,971 INFO L225 Difference]: With dead ends: 522 [2021-10-06 21:14:33,971 INFO L226 Difference]: Without dead ends: 516 [2021-10-06 21:14:33,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2590.7ms TimeCoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:14:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-06 21:14:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 404. [2021-10-06 21:14:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.660049627791563) internal successors, (1475), 403 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1475 transitions. [2021-10-06 21:14:33,995 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1475 transitions. Word has length 16 [2021-10-06 21:14:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:33,995 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1475 transitions. [2021-10-06 21:14:33,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1475 transitions. [2021-10-06 21:14:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:14:33,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:33,998 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:34,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:34,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:34,211 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:14:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:34,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2005792365, now seen corresponding path program 24 times [2021-10-06 21:14:34,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:34,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45539725] [2021-10-06 21:14:34,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:14:34,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:34,214 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:34,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:14:34,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:14:34,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:34,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:14:34,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:14:34,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:35,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:35,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45539725] [2021-10-06 21:14:35,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45539725] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:35,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:35,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2021-10-06 21:14:35,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861405390] [2021-10-06 21:14:35,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:14:35,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:14:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:14:35,185 INFO L87 Difference]: Start difference. First operand 404 states and 1475 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:35,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:35,874 INFO L93 Difference]: Finished difference Result 414 states and 1485 transitions. [2021-10-06 21:14:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:14:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:14:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:35,879 INFO L225 Difference]: With dead ends: 414 [2021-10-06 21:14:35,879 INFO L226 Difference]: Without dead ends: 408 [2021-10-06 21:14:35,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 534.3ms TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:14:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-06 21:14:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2021-10-06 21:14:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.6501240694789083) internal successors, (1471), 403 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1471 transitions. [2021-10-06 21:14:35,895 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1471 transitions. Word has length 16 [2021-10-06 21:14:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:35,895 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1471 transitions. [2021-10-06 21:14:35,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1471 transitions. [2021-10-06 21:14:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:14:35,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:35,898 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:35,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:36,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:36,111 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:14:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 583142799, now seen corresponding path program 25 times [2021-10-06 21:14:36,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:36,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514861399] [2021-10-06 21:14:36,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:14:36,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:36,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:36,114 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:36,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:14:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:14:36,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:14:36,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:36,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:37,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:37,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514861399] [2021-10-06 21:14:37,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514861399] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:37,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:37,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:14:37,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243313090] [2021-10-06 21:14:37,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:14:37,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:14:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:14:37,539 INFO L87 Difference]: Start difference. First operand 404 states and 1471 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:14:45,195 INFO L93 Difference]: Finished difference Result 654 states and 1968 transitions. [2021-10-06 21:14:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:14:45,196 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:14:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:14:45,201 INFO L225 Difference]: With dead ends: 654 [2021-10-06 21:14:45,201 INFO L226 Difference]: Without dead ends: 654 [2021-10-06 21:14:45,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2224.8ms TimeCoverageRelationStatistics Valid=210, Invalid=782, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:14:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-06 21:14:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 414. [2021-10-06 21:14:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.656174334140436) internal successors, (1510), 413 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1510 transitions. [2021-10-06 21:14:45,217 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1510 transitions. Word has length 16 [2021-10-06 21:14:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:14:45,217 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1510 transitions. [2021-10-06 21:14:45,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:14:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1510 transitions. [2021-10-06 21:14:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:14:45,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:14:45,220 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:14:45,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:14:45,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:14:45,434 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:14:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:14:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1006633604, now seen corresponding path program 26 times [2021-10-06 21:14:45,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:14:45,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817717635] [2021-10-06 21:14:45,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:14:45,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:14:45,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:14:45,438 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:14:45,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:14:45,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:14:45,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:14:45,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:14:45,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:14:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:46,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:14:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:14:47,214 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:14:47,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817717635] [2021-10-06 21:14:47,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817717635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:14:47,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:14:47,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:14:47,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226444221] [2021-10-06 21:14:47,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:14:47,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:14:47,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:14:47,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:14:47,216 INFO L87 Difference]: Start difference. First operand 414 states and 1510 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:06,675 INFO L93 Difference]: Finished difference Result 524 states and 1753 transitions. [2021-10-06 21:15:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:15:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:15:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:06,680 INFO L225 Difference]: With dead ends: 524 [2021-10-06 21:15:06,680 INFO L226 Difference]: Without dead ends: 510 [2021-10-06 21:15:06,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 6188.0ms TimeCoverageRelationStatistics Valid=279, Invalid=910, Unknown=1, NotChecked=0, Total=1190 [2021-10-06 21:15:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-06 21:15:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 432. [2021-10-06 21:15:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.6589327146171695) internal successors, (1577), 431 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1577 transitions. [2021-10-06 21:15:06,696 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1577 transitions. Word has length 16 [2021-10-06 21:15:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:06,696 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1577 transitions. [2021-10-06 21:15:06,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1577 transitions. [2021-10-06 21:15:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:15:06,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:06,699 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:06,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:06,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:06,913 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:15:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1909628397, now seen corresponding path program 27 times [2021-10-06 21:15:06,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:06,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130649508] [2021-10-06 21:15:06,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:15:06,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:06,917 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:06,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:15:07,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:15:07,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:07,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:15:07,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:07,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:08,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:08,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130649508] [2021-10-06 21:15:08,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130649508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:08,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:08,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:15:08,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994907378] [2021-10-06 21:15:08,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:15:08,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:15:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:15:08,278 INFO L87 Difference]: Start difference. First operand 432 states and 1577 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:25,043 INFO L93 Difference]: Finished difference Result 654 states and 2042 transitions. [2021-10-06 21:15:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:15:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:15:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:25,048 INFO L225 Difference]: With dead ends: 654 [2021-10-06 21:15:25,048 INFO L226 Difference]: Without dead ends: 654 [2021-10-06 21:15:25,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 7736.7ms TimeCoverageRelationStatistics Valid=283, Invalid=1047, Unknown=2, NotChecked=0, Total=1332 [2021-10-06 21:15:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-06 21:15:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 460. [2021-10-06 21:15:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 3.69281045751634) internal successors, (1695), 459 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1695 transitions. [2021-10-06 21:15:25,064 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1695 transitions. Word has length 16 [2021-10-06 21:15:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:25,064 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1695 transitions. [2021-10-06 21:15:25,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1695 transitions. [2021-10-06 21:15:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:15:25,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:25,067 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:25,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-06 21:15:25,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:25,280 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:15:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1942158001, now seen corresponding path program 28 times [2021-10-06 21:15:25,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:25,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811138483] [2021-10-06 21:15:25,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:15:25,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:25,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:25,284 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:25,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:15:25,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:15:25,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:25,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:15:25,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:26,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:27,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:27,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811138483] [2021-10-06 21:15:27,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811138483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:27,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:27,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:15:27,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547950962] [2021-10-06 21:15:27,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:15:27,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:15:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:15:27,004 INFO L87 Difference]: Start difference. First operand 460 states and 1695 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:31,008 INFO L93 Difference]: Finished difference Result 672 states and 2151 transitions. [2021-10-06 21:15:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:15:31,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:15:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:31,015 INFO L225 Difference]: With dead ends: 672 [2021-10-06 21:15:31,015 INFO L226 Difference]: Without dead ends: 672 [2021-10-06 21:15:31,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3117.9ms TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:15:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-06 21:15:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 484. [2021-10-06 21:15:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.7163561076604554) internal successors, (1795), 483 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1795 transitions. [2021-10-06 21:15:31,032 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1795 transitions. Word has length 16 [2021-10-06 21:15:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:31,032 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1795 transitions. [2021-10-06 21:15:31,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1795 transitions. [2021-10-06 21:15:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:15:31,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:31,035 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:31,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:31,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:31,238 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:15:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:31,239 INFO L82 PathProgramCache]: Analyzing trace with hash 35882654, now seen corresponding path program 29 times [2021-10-06 21:15:31,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:31,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793890540] [2021-10-06 21:15:31,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:15:31,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:31,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:31,242 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:31,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:15:31,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:15:31,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:31,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:15:31,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:31,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:33,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:33,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793890540] [2021-10-06 21:15:33,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793890540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:33,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:33,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:15:33,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704081124] [2021-10-06 21:15:33,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:15:33,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:15:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:15:33,113 INFO L87 Difference]: Start difference. First operand 484 states and 1795 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:43,842 INFO L93 Difference]: Finished difference Result 796 states and 2451 transitions. [2021-10-06 21:15:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:15:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:15:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:43,849 INFO L225 Difference]: With dead ends: 796 [2021-10-06 21:15:43,849 INFO L226 Difference]: Without dead ends: 796 [2021-10-06 21:15:43,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 6162.6ms TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:15:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-06 21:15:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 520. [2021-10-06 21:15:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.74373795761079) internal successors, (1943), 519 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1943 transitions. [2021-10-06 21:15:43,867 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1943 transitions. Word has length 16 [2021-10-06 21:15:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:43,868 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 1943 transitions. [2021-10-06 21:15:43,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1943 transitions. [2021-10-06 21:15:43,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:15:43,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:43,870 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:43,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:44,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:44,083 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:15:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:44,084 INFO L82 PathProgramCache]: Analyzing trace with hash 31720132, now seen corresponding path program 30 times [2021-10-06 21:15:44,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:44,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168886130] [2021-10-06 21:15:44,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:15:44,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:44,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:44,086 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:44,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:15:44,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:15:44,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:44,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:15:44,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:44,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:45,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:45,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168886130] [2021-10-06 21:15:45,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168886130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:45,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:45,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:15:45,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077866999] [2021-10-06 21:15:45,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:15:45,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:45,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:15:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:15:45,414 INFO L87 Difference]: Start difference. First operand 520 states and 1943 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:47,594 INFO L93 Difference]: Finished difference Result 630 states and 2154 transitions. [2021-10-06 21:15:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:15:47,596 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:15:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:47,600 INFO L225 Difference]: With dead ends: 630 [2021-10-06 21:15:47,600 INFO L226 Difference]: Without dead ends: 624 [2021-10-06 21:15:47,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1864.5ms TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:15:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-06 21:15:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 524. [2021-10-06 21:15:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.7380497131931167) internal successors, (1955), 523 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1955 transitions. [2021-10-06 21:15:47,618 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1955 transitions. Word has length 16 [2021-10-06 21:15:47,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:47,619 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1955 transitions. [2021-10-06 21:15:47,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1955 transitions. [2021-10-06 21:15:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:15:47,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:47,621 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:47,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:15:47,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:47,836 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:15:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash -97318050, now seen corresponding path program 31 times [2021-10-06 21:15:47,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:47,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584809125] [2021-10-06 21:15:47,838 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:15:47,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:47,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:47,839 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:47,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:15:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:15:48,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:15:48,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:48,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:49,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:49,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584809125] [2021-10-06 21:15:49,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584809125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:49,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:49,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-06 21:15:49,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317569675] [2021-10-06 21:15:49,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:15:49,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:15:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:15:49,638 INFO L87 Difference]: Start difference. First operand 524 states and 1955 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:15:55,825 INFO L93 Difference]: Finished difference Result 674 states and 2258 transitions. [2021-10-06 21:15:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:15:55,826 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:15:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:15:55,833 INFO L225 Difference]: With dead ends: 674 [2021-10-06 21:15:55,833 INFO L226 Difference]: Without dead ends: 670 [2021-10-06 21:15:55,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 5745.7ms TimeCoverageRelationStatistics Valid=386, Invalid=1420, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:15:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-10-06 21:15:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 536. [2021-10-06 21:15:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 3.714018691588785) internal successors, (1987), 535 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1987 transitions. [2021-10-06 21:15:55,852 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1987 transitions. Word has length 16 [2021-10-06 21:15:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:15:55,853 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 1987 transitions. [2021-10-06 21:15:55,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:15:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1987 transitions. [2021-10-06 21:15:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:15:55,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:15:55,856 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:15:55,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 21:15:56,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:15:56,075 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:15:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:15:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 940196154, now seen corresponding path program 32 times [2021-10-06 21:15:56,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:15:56,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138205550] [2021-10-06 21:15:56,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:15:56,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:15:56,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:15:56,079 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:15:56,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:15:56,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:15:56,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:15:56,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:15:56,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:15:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:56,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:15:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:15:57,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:15:57,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138205550] [2021-10-06 21:15:57,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138205550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:15:57,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:15:57,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:15:57,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148700907] [2021-10-06 21:15:57,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:15:57,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:15:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:15:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:15:57,251 INFO L87 Difference]: Start difference. First operand 536 states and 1987 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:00,362 INFO L93 Difference]: Finished difference Result 696 states and 2346 transitions. [2021-10-06 21:16:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:16:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:16:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:00,369 INFO L225 Difference]: With dead ends: 696 [2021-10-06 21:16:00,369 INFO L226 Difference]: Without dead ends: 686 [2021-10-06 21:16:00,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 487.8ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:16:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-10-06 21:16:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 568. [2021-10-06 21:16:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.696649029982363) internal successors, (2096), 567 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 2096 transitions. [2021-10-06 21:16:00,387 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 2096 transitions. Word has length 17 [2021-10-06 21:16:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:00,388 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 2096 transitions. [2021-10-06 21:16:00,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 2096 transitions. [2021-10-06 21:16:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:16:00,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:00,390 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:00,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:00,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:00,591 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:16:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1813294517, now seen corresponding path program 33 times [2021-10-06 21:16:00,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:00,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843374230] [2021-10-06 21:16:00,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:16:00,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:00,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:00,594 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:00,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:16:01,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:16:01,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:01,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:16:01,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:16:01,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:02,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:02,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843374230] [2021-10-06 21:16:02,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843374230] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:02,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:02,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-06 21:16:02,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066634768] [2021-10-06 21:16:02,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:16:02,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:16:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:16:02,281 INFO L87 Difference]: Start difference. First operand 568 states and 2096 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:04,091 INFO L93 Difference]: Finished difference Result 666 states and 2284 transitions. [2021-10-06 21:16:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:16:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:16:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:04,097 INFO L225 Difference]: With dead ends: 666 [2021-10-06 21:16:04,097 INFO L226 Difference]: Without dead ends: 652 [2021-10-06 21:16:04,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2123.1ms TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:16:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-10-06 21:16:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 584. [2021-10-06 21:16:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.6363636363636362) internal successors, (2120), 583 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 2120 transitions. [2021-10-06 21:16:04,114 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 2120 transitions. Word has length 17 [2021-10-06 21:16:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:04,114 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 2120 transitions. [2021-10-06 21:16:04,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 2120 transitions. [2021-10-06 21:16:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:16:04,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:04,117 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:04,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:04,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:04,331 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:16:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1607416482, now seen corresponding path program 34 times [2021-10-06 21:16:04,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:04,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057562035] [2021-10-06 21:16:04,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:16:04,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:04,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:04,334 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:04,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:16:04,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:16:04,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:04,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:16:04,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:07,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:07,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:07,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057562035] [2021-10-06 21:16:07,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057562035] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:07,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:07,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:16:07,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875539208] [2021-10-06 21:16:07,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:16:07,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:07,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:16:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-10-06 21:16:07,545 INFO L87 Difference]: Start difference. First operand 584 states and 2120 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:33,909 INFO L93 Difference]: Finished difference Result 802 states and 2629 transitions. [2021-10-06 21:16:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:16:33,910 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:16:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:33,923 INFO L225 Difference]: With dead ends: 802 [2021-10-06 21:16:33,923 INFO L226 Difference]: Without dead ends: 792 [2021-10-06 21:16:33,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2531.3ms TimeCoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-10-06 21:16:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-10-06 21:16:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 624. [2021-10-06 21:16:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 3.6886035313001604) internal successors, (2298), 623 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2298 transitions. [2021-10-06 21:16:33,957 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2298 transitions. Word has length 17 [2021-10-06 21:16:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:33,960 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2298 transitions. [2021-10-06 21:16:33,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2298 transitions. [2021-10-06 21:16:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:16:33,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:33,964 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:33,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:34,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:34,173 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:16:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:34,174 INFO L82 PathProgramCache]: Analyzing trace with hash 545790961, now seen corresponding path program 35 times [2021-10-06 21:16:34,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:34,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690670729] [2021-10-06 21:16:34,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:16:34,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:34,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:34,176 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:34,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:16:34,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:16:34,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:34,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:16:34,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:35,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:36,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:36,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690670729] [2021-10-06 21:16:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690670729] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:36,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:36,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:16:36,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449493270] [2021-10-06 21:16:36,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:16:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:16:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:16:36,640 INFO L87 Difference]: Start difference. First operand 624 states and 2298 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:47,814 INFO L93 Difference]: Finished difference Result 908 states and 2996 transitions. [2021-10-06 21:16:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:16:47,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:16:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:47,820 INFO L225 Difference]: With dead ends: 908 [2021-10-06 21:16:47,820 INFO L226 Difference]: Without dead ends: 908 [2021-10-06 21:16:47,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 7643.4ms TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:16:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-06 21:16:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 666. [2021-10-06 21:16:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 3.724812030075188) internal successors, (2477), 665 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2477 transitions. [2021-10-06 21:16:47,844 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2477 transitions. Word has length 17 [2021-10-06 21:16:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:47,844 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2477 transitions. [2021-10-06 21:16:47,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2477 transitions. [2021-10-06 21:16:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:16:47,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:47,847 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:47,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:16:48,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:48,053 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:16:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -761699253, now seen corresponding path program 36 times [2021-10-06 21:16:48,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:48,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012557776] [2021-10-06 21:16:48,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:16:48,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:48,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:48,056 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:48,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:16:48,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:16:48,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:16:48,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:16:48,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:48,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:50,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:50,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012557776] [2021-10-06 21:16:50,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012557776] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:50,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:50,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:16:50,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828889546] [2021-10-06 21:16:50,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:16:50,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:16:50,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:16:50,156 INFO L87 Difference]: Start difference. First operand 666 states and 2477 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:16:58,126 INFO L93 Difference]: Finished difference Result 940 states and 3024 transitions. [2021-10-06 21:16:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:16:58,127 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:16:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:16:58,130 INFO L225 Difference]: With dead ends: 940 [2021-10-06 21:16:58,130 INFO L226 Difference]: Without dead ends: 940 [2021-10-06 21:16:58,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 4549.2ms TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:16:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-10-06 21:16:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 686. [2021-10-06 21:16:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 3.732846715328467) internal successors, (2557), 685 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2557 transitions. [2021-10-06 21:16:58,147 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2557 transitions. Word has length 17 [2021-10-06 21:16:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:16:58,148 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 2557 transitions. [2021-10-06 21:16:58,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:16:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2557 transitions. [2021-10-06 21:16:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:16:58,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:16:58,150 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:16:58,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-06 21:16:58,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:16:58,364 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:16:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:16:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash 968192736, now seen corresponding path program 37 times [2021-10-06 21:16:58,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:16:58,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764121862] [2021-10-06 21:16:58,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:16:58,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:16:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:16:58,367 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:16:58,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:16:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:16:58,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:16:58,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:16:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:59,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:16:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:16:59,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:16:59,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764121862] [2021-10-06 21:16:59,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764121862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:16:59,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:16:59,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:16:59,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641506741] [2021-10-06 21:16:59,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:16:59,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:16:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:16:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:16:59,624 INFO L87 Difference]: Start difference. First operand 686 states and 2557 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:16,641 INFO L93 Difference]: Finished difference Result 886 states and 3033 transitions. [2021-10-06 21:17:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:17:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:17:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:16,646 INFO L225 Difference]: With dead ends: 886 [2021-10-06 21:17:16,646 INFO L226 Difference]: Without dead ends: 876 [2021-10-06 21:17:16,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 557.7ms TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:17:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-06 21:17:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 716. [2021-10-06 21:17:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 3.765034965034965) internal successors, (2692), 715 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 2692 transitions. [2021-10-06 21:17:16,664 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 2692 transitions. Word has length 17 [2021-10-06 21:17:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:16,664 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 2692 transitions. [2021-10-06 21:17:16,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 2692 transitions. [2021-10-06 21:17:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:17:16,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:16,666 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:16,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:16,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:16,867 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:17:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash -212237483, now seen corresponding path program 38 times [2021-10-06 21:17:16,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:16,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755539076] [2021-10-06 21:17:16,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:17:16,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:16,870 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:16,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:17:17,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:17:17,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:17,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:17:17,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:17:17,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:18,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:18,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755539076] [2021-10-06 21:17:18,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755539076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:18,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:18,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-06 21:17:18,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174366495] [2021-10-06 21:17:18,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:17:18,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:17:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:17:18,851 INFO L87 Difference]: Start difference. First operand 716 states and 2692 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:24,747 INFO L93 Difference]: Finished difference Result 800 states and 2844 transitions. [2021-10-06 21:17:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:17:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:17:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:24,752 INFO L225 Difference]: With dead ends: 800 [2021-10-06 21:17:24,752 INFO L226 Difference]: Without dead ends: 796 [2021-10-06 21:17:24,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3307.1ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:17:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-06 21:17:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 722. [2021-10-06 21:17:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 3.7461858529819696) internal successors, (2701), 721 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 2701 transitions. [2021-10-06 21:17:24,771 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 2701 transitions. Word has length 17 [2021-10-06 21:17:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 2701 transitions. [2021-10-06 21:17:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 2701 transitions. [2021-10-06 21:17:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:17:24,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:24,773 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:24,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:24,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:24,974 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:17:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1057155345, now seen corresponding path program 39 times [2021-10-06 21:17:24,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:24,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410383883] [2021-10-06 21:17:24,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:17:24,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:24,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:24,978 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:24,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:17:25,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:17:25,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:25,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:17:25,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:26,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:27,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:27,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410383883] [2021-10-06 21:17:27,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410383883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:27,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:27,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:17:27,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967327028] [2021-10-06 21:17:27,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:17:27,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:27,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:17:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:17:27,137 INFO L87 Difference]: Start difference. First operand 722 states and 2701 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:32,684 INFO L93 Difference]: Finished difference Result 930 states and 3156 transitions. [2021-10-06 21:17:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:17:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:17:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:32,688 INFO L225 Difference]: With dead ends: 930 [2021-10-06 21:17:32,688 INFO L226 Difference]: Without dead ends: 930 [2021-10-06 21:17:32,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4062.5ms TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:17:32,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-10-06 21:17:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 740. [2021-10-06 21:17:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 3.756427604871448) internal successors, (2776), 739 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2776 transitions. [2021-10-06 21:17:32,707 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2776 transitions. Word has length 17 [2021-10-06 21:17:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:32,707 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2776 transitions. [2021-10-06 21:17:32,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2776 transitions. [2021-10-06 21:17:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:17:32,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:32,709 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:32,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-06 21:17:32,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:32,910 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:17:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:32,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1429506594, now seen corresponding path program 40 times [2021-10-06 21:17:32,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:32,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843411360] [2021-10-06 21:17:32,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:17:32,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:32,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:32,914 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:32,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:17:33,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:17:33,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:33,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:17:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:34,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:34,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:34,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843411360] [2021-10-06 21:17:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843411360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:34,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:34,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:17:34,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126298814] [2021-10-06 21:17:34,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:17:34,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:17:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:17:34,848 INFO L87 Difference]: Start difference. First operand 740 states and 2776 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:17:51,887 INFO L93 Difference]: Finished difference Result 954 states and 3196 transitions. [2021-10-06 21:17:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:17:51,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:17:51,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:17:51,892 INFO L225 Difference]: With dead ends: 954 [2021-10-06 21:17:51,892 INFO L226 Difference]: Without dead ends: 944 [2021-10-06 21:17:51,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1143.1ms TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:17:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-10-06 21:17:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 744. [2021-10-06 21:17:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 3.7604306864064605) internal successors, (2794), 743 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2794 transitions. [2021-10-06 21:17:51,913 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2794 transitions. Word has length 17 [2021-10-06 21:17:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:17:51,914 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 2794 transitions. [2021-10-06 21:17:51,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:17:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2794 transitions. [2021-10-06 21:17:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:17:51,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:17:51,916 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:17:51,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:17:52,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:17:52,117 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:17:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:17:52,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1583669655, now seen corresponding path program 41 times [2021-10-06 21:17:52,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:17:52,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227931568] [2021-10-06 21:17:52,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:17:52,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:17:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:17:52,120 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:17:52,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:17:52,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:17:52,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:17:52,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:17:52,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:17:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:17:52,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:17:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:17:54,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:17:54,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227931568] [2021-10-06 21:17:54,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227931568] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:17:54,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:17:54,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-06 21:17:54,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516893516] [2021-10-06 21:17:54,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:17:54,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:17:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:17:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:17:54,616 INFO L87 Difference]: Start difference. First operand 744 states and 2794 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:15,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:15,196 INFO L93 Difference]: Finished difference Result 914 states and 3181 transitions. [2021-10-06 21:18:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:18:15,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:18:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:15,200 INFO L225 Difference]: With dead ends: 914 [2021-10-06 21:18:15,201 INFO L226 Difference]: Without dead ends: 904 [2021-10-06 21:18:15,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 7496.5ms TimeCoverageRelationStatistics Valid=264, Invalid=727, Unknown=1, NotChecked=0, Total=992 [2021-10-06 21:18:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-10-06 21:18:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 758. [2021-10-06 21:18:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.766182298546896) internal successors, (2851), 757 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2851 transitions. [2021-10-06 21:18:15,220 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2851 transitions. Word has length 17 [2021-10-06 21:18:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:15,220 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 2851 transitions. [2021-10-06 21:18:15,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2851 transitions. [2021-10-06 21:18:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:18:15,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:15,222 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:15,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:15,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:15,423 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:18:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:15,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1394983639, now seen corresponding path program 42 times [2021-10-06 21:18:15,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:15,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27394565] [2021-10-06 21:18:15,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:18:15,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:15,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:15,426 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:15,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:18:16,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:18:16,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:16,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:18:16,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:16,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:17,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:17,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27394565] [2021-10-06 21:18:17,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27394565] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:17,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:17,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:18:17,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726569958] [2021-10-06 21:18:17,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:18:17,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:18:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:18:17,893 INFO L87 Difference]: Start difference. First operand 758 states and 2851 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:31,704 INFO L93 Difference]: Finished difference Result 1080 states and 3598 transitions. [2021-10-06 21:18:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:18:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:18:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:31,711 INFO L225 Difference]: With dead ends: 1080 [2021-10-06 21:18:31,712 INFO L226 Difference]: Without dead ends: 1080 [2021-10-06 21:18:31,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 9137.1ms TimeCoverageRelationStatistics Valid=422, Invalid=1138, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:18:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-10-06 21:18:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 800. [2021-10-06 21:18:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 3.7922403003754694) internal successors, (3030), 799 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 3030 transitions. [2021-10-06 21:18:31,736 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 3030 transitions. Word has length 17 [2021-10-06 21:18:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:31,736 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 3030 transitions. [2021-10-06 21:18:31,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 3030 transitions. [2021-10-06 21:18:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:18:31,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:31,739 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:31,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:18:31,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:31,940 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:18:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash 167085771, now seen corresponding path program 43 times [2021-10-06 21:18:31,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:31,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634622893] [2021-10-06 21:18:31,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:18:31,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:31,944 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:31,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:18:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:18:32,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:18:32,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:33,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:34,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:34,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634622893] [2021-10-06 21:18:34,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634622893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:34,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:34,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:18:34,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807037808] [2021-10-06 21:18:34,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:18:34,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:34,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:18:34,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:18:34,657 INFO L87 Difference]: Start difference. First operand 800 states and 3030 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:18:42,858 INFO L93 Difference]: Finished difference Result 1062 states and 3583 transitions. [2021-10-06 21:18:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:18:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:18:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:18:42,863 INFO L225 Difference]: With dead ends: 1062 [2021-10-06 21:18:42,863 INFO L226 Difference]: Without dead ends: 1062 [2021-10-06 21:18:42,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5688.6ms TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:18:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-10-06 21:18:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 818. [2021-10-06 21:18:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.795593635250918) internal successors, (3101), 817 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3101 transitions. [2021-10-06 21:18:42,888 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3101 transitions. Word has length 17 [2021-10-06 21:18:42,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:18:42,889 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3101 transitions. [2021-10-06 21:18:42,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:18:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3101 transitions. [2021-10-06 21:18:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:18:42,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:18:42,892 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:18:42,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-06 21:18:43,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:18:43,107 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:18:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:18:43,108 INFO L82 PathProgramCache]: Analyzing trace with hash 127311264, now seen corresponding path program 44 times [2021-10-06 21:18:43,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:18:43,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283455833] [2021-10-06 21:18:43,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:18:43,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:18:43,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:18:43,111 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:18:43,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:18:44,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:18:44,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:18:44,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:18:44,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:18:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:46,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:18:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:18:47,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:18:47,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283455833] [2021-10-06 21:18:47,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283455833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:18:47,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:18:47,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:18:47,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202144537] [2021-10-06 21:18:47,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:18:47,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:18:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:18:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-10-06 21:18:47,060 INFO L87 Difference]: Start difference. First operand 818 states and 3101 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:08,249 INFO L93 Difference]: Finished difference Result 990 states and 3428 transitions. [2021-10-06 21:19:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:19:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:19:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:08,254 INFO L225 Difference]: With dead ends: 990 [2021-10-06 21:19:08,254 INFO L226 Difference]: Without dead ends: 980 [2021-10-06 21:19:08,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2622.5ms TimeCoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-10-06 21:19:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-10-06 21:19:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 820. [2021-10-06 21:19:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 3.797313797313797) internal successors, (3110), 819 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 3110 transitions. [2021-10-06 21:19:08,284 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 3110 transitions. Word has length 17 [2021-10-06 21:19:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:08,284 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 3110 transitions. [2021-10-06 21:19:08,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 3110 transitions. [2021-10-06 21:19:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:19:08,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:08,288 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:08,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:08,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:08,501 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:08,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash -792300130, now seen corresponding path program 45 times [2021-10-06 21:19:08,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:08,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448852850] [2021-10-06 21:19:08,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:19:08,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:08,504 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:08,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:19:09,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:19:09,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:09,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:19:09,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:09,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:09,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:09,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448852850] [2021-10-06 21:19:09,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448852850] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:09,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:19:09,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061734721] [2021-10-06 21:19:09,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:19:09,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:19:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:19:09,834 INFO L87 Difference]: Start difference. First operand 820 states and 3110 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:14,475 INFO L93 Difference]: Finished difference Result 1012 states and 3591 transitions. [2021-10-06 21:19:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:19:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:19:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:14,480 INFO L225 Difference]: With dead ends: 1012 [2021-10-06 21:19:14,480 INFO L226 Difference]: Without dead ends: 1002 [2021-10-06 21:19:14,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 466.3ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:19:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-10-06 21:19:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 872. [2021-10-06 21:19:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.8208955223880596) internal successors, (3328), 871 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3328 transitions. [2021-10-06 21:19:14,507 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3328 transitions. Word has length 17 [2021-10-06 21:19:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:14,508 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 3328 transitions. [2021-10-06 21:19:14,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3328 transitions. [2021-10-06 21:19:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:19:14,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:14,510 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:14,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:14,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:14,712 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:14,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1264906223, now seen corresponding path program 46 times [2021-10-06 21:19:14,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:14,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56634237] [2021-10-06 21:19:14,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:19:14,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:14,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:14,716 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:14,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:19:15,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:19:15,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:15,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:19:15,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:19:15,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:16,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:16,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56634237] [2021-10-06 21:19:16,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56634237] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:16,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:16,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-06 21:19:16,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111396344] [2021-10-06 21:19:16,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:19:16,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:19:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:19:16,662 INFO L87 Difference]: Start difference. First operand 872 states and 3328 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:19,639 INFO L93 Difference]: Finished difference Result 936 states and 3446 transitions. [2021-10-06 21:19:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:19:19,640 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:19:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:19,646 INFO L225 Difference]: With dead ends: 936 [2021-10-06 21:19:19,646 INFO L226 Difference]: Without dead ends: 930 [2021-10-06 21:19:19,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2890.4ms TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:19:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-10-06 21:19:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 878. [2021-10-06 21:19:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 3.8027366020524513) internal successors, (3335), 877 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 3335 transitions. [2021-10-06 21:19:19,685 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 3335 transitions. Word has length 17 [2021-10-06 21:19:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:19,685 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 3335 transitions. [2021-10-06 21:19:19,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 3335 transitions. [2021-10-06 21:19:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:19:19,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:19,689 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:19,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:19,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:19,903 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:19,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1124302345, now seen corresponding path program 47 times [2021-10-06 21:19:19,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:19,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246702916] [2021-10-06 21:19:19,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:19:19,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:19,907 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:19,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:19:20,563 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:19:20,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:20,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:19:20,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:21,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:23,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:23,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246702916] [2021-10-06 21:19:23,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246702916] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:23,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:23,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:19:23,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184256960] [2021-10-06 21:19:23,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:19:23,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:19:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:19:23,348 INFO L87 Difference]: Start difference. First operand 878 states and 3335 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:35,330 INFO L93 Difference]: Finished difference Result 1110 states and 3813 transitions. [2021-10-06 21:19:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:19:35,332 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:19:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:35,335 INFO L225 Difference]: With dead ends: 1110 [2021-10-06 21:19:35,335 INFO L226 Difference]: Without dead ends: 1110 [2021-10-06 21:19:35,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12072.3ms TimeCoverageRelationStatistics Valid=723, Invalid=2247, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:19:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-10-06 21:19:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 904. [2021-10-06 21:19:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.763012181616833) internal successors, (3398), 903 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3398 transitions. [2021-10-06 21:19:35,355 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3398 transitions. Word has length 18 [2021-10-06 21:19:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:35,355 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 3398 transitions. [2021-10-06 21:19:35,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3398 transitions. [2021-10-06 21:19:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:19:35,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:35,358 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:35,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:35,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:35,559 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:35,560 INFO L82 PathProgramCache]: Analyzing trace with hash 714111689, now seen corresponding path program 48 times [2021-10-06 21:19:35,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:35,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091379532] [2021-10-06 21:19:35,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:19:35,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:35,562 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:35,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:19:36,324 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:19:36,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:36,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:19:36,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:36,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:37,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:37,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091379532] [2021-10-06 21:19:37,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091379532] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:37,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:37,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:19:37,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037182697] [2021-10-06 21:19:37,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:19:37,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:19:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:19:37,904 INFO L87 Difference]: Start difference. First operand 904 states and 3398 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:45,109 INFO L93 Difference]: Finished difference Result 1250 states and 4134 transitions. [2021-10-06 21:19:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:19:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:19:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:45,114 INFO L225 Difference]: With dead ends: 1250 [2021-10-06 21:19:45,115 INFO L226 Difference]: Without dead ends: 1250 [2021-10-06 21:19:45,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4550.0ms TimeCoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:19:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-10-06 21:19:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 942. [2021-10-06 21:19:45,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 3.7821466524973433) internal successors, (3559), 941 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 3559 transitions. [2021-10-06 21:19:45,138 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 3559 transitions. Word has length 18 [2021-10-06 21:19:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:45,138 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 3559 transitions. [2021-10-06 21:19:45,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 3559 transitions. [2021-10-06 21:19:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:19:45,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:45,141 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:45,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:45,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:19:45,342 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:45,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1866491189, now seen corresponding path program 49 times [2021-10-06 21:19:45,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:45,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561039545] [2021-10-06 21:19:45,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:19:45,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:45,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:45,345 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:45,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:19:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:45,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:19:45,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:49,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:50,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:50,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561039545] [2021-10-06 21:19:50,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561039545] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:50,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:50,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:19:50,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454136229] [2021-10-06 21:19:50,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:19:50,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:51,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:19:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=279, Unknown=1, NotChecked=0, Total=380 [2021-10-06 21:19:51,000 INFO L87 Difference]: Start difference. First operand 942 states and 3559 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:41,953 INFO L93 Difference]: Finished difference Result 1376 states and 4574 transitions. [2021-10-06 21:20:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:20:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:20:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:41,957 INFO L225 Difference]: With dead ends: 1376 [2021-10-06 21:20:41,957 INFO L226 Difference]: Without dead ends: 1376 [2021-10-06 21:20:41,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 26383.6ms TimeCoverageRelationStatistics Valid=612, Invalid=1932, Unknown=6, NotChecked=0, Total=2550 [2021-10-06 21:20:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-06 21:20:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 996. [2021-10-06 21:20:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.8070351758793968) internal successors, (3788), 995 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3788 transitions. [2021-10-06 21:20:41,978 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3788 transitions. Word has length 18 [2021-10-06 21:20:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:41,978 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 3788 transitions. [2021-10-06 21:20:41,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3788 transitions. [2021-10-06 21:20:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:20:41,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:41,981 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:41,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:42,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:42,181 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1423310291, now seen corresponding path program 50 times [2021-10-06 21:20:42,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:42,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049271713] [2021-10-06 21:20:42,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:42,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:42,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:42,185 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:42,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:20:42,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:20:42,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:42,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:20:42,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:45,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:47,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:47,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049271713] [2021-10-06 21:20:47,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049271713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:47,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:47,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:20:47,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984639047] [2021-10-06 21:20:47,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:20:47,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:47,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:20:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=255, Unknown=1, NotChecked=0, Total=342 [2021-10-06 21:20:47,542 INFO L87 Difference]: Start difference. First operand 996 states and 3788 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:35,271 INFO L93 Difference]: Finished difference Result 1438 states and 4789 transitions. [2021-10-06 21:21:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:21:35,272 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:21:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:35,275 INFO L225 Difference]: With dead ends: 1438 [2021-10-06 21:21:35,276 INFO L226 Difference]: Without dead ends: 1438 [2021-10-06 21:21:35,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 24329.3ms TimeCoverageRelationStatistics Valid=646, Invalid=2001, Unknown=5, NotChecked=0, Total=2652 [2021-10-06 21:21:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-10-06 21:21:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1038. [2021-10-06 21:21:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1037 states have (on average 3.8273866923818707) internal successors, (3969), 1037 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 3969 transitions. [2021-10-06 21:21:35,303 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 3969 transitions. Word has length 18 [2021-10-06 21:21:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:35,303 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 3969 transitions. [2021-10-06 21:21:35,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 3969 transitions. [2021-10-06 21:21:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:21:35,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:35,308 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:35,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-06 21:21:35,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:35,522 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:35,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1384130430, now seen corresponding path program 51 times [2021-10-06 21:21:35,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:35,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937889740] [2021-10-06 21:21:35,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:21:35,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:35,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:35,526 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:35,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:21:36,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:21:36,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:36,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:21:36,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:37,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:38,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:38,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937889740] [2021-10-06 21:21:38,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937889740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:38,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:38,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:21:38,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878660400] [2021-10-06 21:21:38,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:21:38,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:21:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:38,031 INFO L87 Difference]: Start difference. First operand 1038 states and 3969 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:46,805 INFO L93 Difference]: Finished difference Result 1318 states and 4505 transitions. [2021-10-06 21:21:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:21:46,806 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:21:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:46,809 INFO L225 Difference]: With dead ends: 1318 [2021-10-06 21:21:46,809 INFO L226 Difference]: Without dead ends: 1312 [2021-10-06 21:21:46,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 6914.2ms TimeCoverageRelationStatistics Valid=367, Invalid=2389, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:21:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-06 21:21:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1062. [2021-10-06 21:21:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1061 states have (on average 3.8020735155513665) internal successors, (4034), 1061 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 4034 transitions. [2021-10-06 21:21:46,834 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 4034 transitions. Word has length 18 [2021-10-06 21:21:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:46,835 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 4034 transitions. [2021-10-06 21:21:46,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 4034 transitions. [2021-10-06 21:21:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:21:46,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:46,838 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:46,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:47,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:47,039 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash -657861958, now seen corresponding path program 52 times [2021-10-06 21:21:47,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:47,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842906809] [2021-10-06 21:21:47,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:47,041 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:47,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:47,042 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:47,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:21:47,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:47,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:47,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:21:47,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:48,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:50,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:50,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842906809] [2021-10-06 21:21:50,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842906809] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:50,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:50,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:21:50,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901696336] [2021-10-06 21:21:50,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:21:50,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:21:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:50,359 INFO L87 Difference]: Start difference. First operand 1062 states and 4034 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:07,071 INFO L93 Difference]: Finished difference Result 1514 states and 4920 transitions. [2021-10-06 21:22:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:22:07,072 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:22:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:07,076 INFO L225 Difference]: With dead ends: 1514 [2021-10-06 21:22:07,076 INFO L226 Difference]: Without dead ends: 1506 [2021-10-06 21:22:07,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 16147.4ms TimeCoverageRelationStatistics Valid=861, Invalid=3561, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:22:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-10-06 21:22:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1078. [2021-10-06 21:22:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 3.7957288765088206) internal successors, (4088), 1077 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 4088 transitions. [2021-10-06 21:22:07,104 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 4088 transitions. Word has length 18 [2021-10-06 21:22:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:07,104 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 4088 transitions. [2021-10-06 21:22:07,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 4088 transitions. [2021-10-06 21:22:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:22:07,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:07,108 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:07,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-06 21:22:07,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:07,324 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:07,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:07,324 INFO L82 PathProgramCache]: Analyzing trace with hash -30332917, now seen corresponding path program 53 times [2021-10-06 21:22:07,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:07,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710190368] [2021-10-06 21:22:07,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:22:07,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:07,326 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:07,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:22:08,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:22:08,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:08,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:08,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:09,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:11,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:11,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710190368] [2021-10-06 21:22:11,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710190368] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:11,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:11,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:11,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461446442] [2021-10-06 21:22:11,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:22:11,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:22:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:22:11,169 INFO L87 Difference]: Start difference. First operand 1078 states and 4088 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:42,654 INFO L93 Difference]: Finished difference Result 1592 states and 5270 transitions. [2021-10-06 21:22:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:22:42,655 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:22:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:42,659 INFO L225 Difference]: With dead ends: 1592 [2021-10-06 21:22:42,659 INFO L226 Difference]: Without dead ends: 1592 [2021-10-06 21:22:42,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 17729.1ms TimeCoverageRelationStatistics Valid=579, Invalid=1772, Unknown=1, NotChecked=0, Total=2352 [2021-10-06 21:22:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-10-06 21:22:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1126. [2021-10-06 21:22:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 3.8293333333333335) internal successors, (4308), 1125 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 4308 transitions. [2021-10-06 21:22:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 4308 transitions. Word has length 18 [2021-10-06 21:22:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:42,688 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 4308 transitions. [2021-10-06 21:22:42,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 4308 transitions. [2021-10-06 21:22:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:22:42,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:42,700 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:42,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:42,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:42,901 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:42,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1684031501, now seen corresponding path program 54 times [2021-10-06 21:22:42,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:42,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121098616] [2021-10-06 21:22:42,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:22:42,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:42,904 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:42,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:22:43,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:22:43,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:43,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:22:43,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:44,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:45,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:45,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121098616] [2021-10-06 21:22:45,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121098616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:45,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:45,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:45,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388592363] [2021-10-06 21:22:45,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:22:45,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:22:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:22:45,313 INFO L87 Difference]: Start difference. First operand 1126 states and 4308 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:53,393 INFO L93 Difference]: Finished difference Result 1494 states and 5075 transitions. [2021-10-06 21:22:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:22:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:22:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:53,398 INFO L225 Difference]: With dead ends: 1494 [2021-10-06 21:22:53,399 INFO L226 Difference]: Without dead ends: 1494 [2021-10-06 21:22:53,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 5943.0ms TimeCoverageRelationStatistics Valid=384, Invalid=2166, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:22:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-06 21:22:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1156. [2021-10-06 21:22:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 3.843290043290043) internal successors, (4439), 1155 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 4439 transitions. [2021-10-06 21:22:53,434 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 4439 transitions. Word has length 18 [2021-10-06 21:22:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 4439 transitions. [2021-10-06 21:22:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 4439 transitions. [2021-10-06 21:22:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:22:53,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:53,439 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:53,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:53,653 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:53,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:53,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1739333579, now seen corresponding path program 55 times [2021-10-06 21:22:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:53,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919544514] [2021-10-06 21:22:53,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:22:53,655 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:53,656 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:53,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:22:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:54,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:57,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:59,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:59,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919544514] [2021-10-06 21:22:59,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919544514] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:59,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:59,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:59,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309744468] [2021-10-06 21:22:59,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:22:59,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:22:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=279, Unknown=1, NotChecked=0, Total=380 [2021-10-06 21:22:59,587 INFO L87 Difference]: Start difference. First operand 1156 states and 4439 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:25,933 INFO L93 Difference]: Finished difference Result 1512 states and 5278 transitions. [2021-10-06 21:24:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:24:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:24:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:25,939 INFO L225 Difference]: With dead ends: 1512 [2021-10-06 21:24:25,939 INFO L226 Difference]: Without dead ends: 1512 [2021-10-06 21:24:25,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 31341.9ms TimeCoverageRelationStatistics Valid=488, Invalid=1308, Unknown=10, NotChecked=0, Total=1806 [2021-10-06 21:24:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-10-06 21:24:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1204. [2021-10-06 21:24:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 3.86284289276808) internal successors, (4647), 1203 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 4647 transitions. [2021-10-06 21:24:25,971 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 4647 transitions. Word has length 18 [2021-10-06 21:24:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:25,971 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 4647 transitions. [2021-10-06 21:24:25,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 4647 transitions. [2021-10-06 21:24:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:24:25,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:25,975 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:25,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-06 21:24:26,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:26,176 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:24:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:26,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2123049877, now seen corresponding path program 56 times [2021-10-06 21:24:26,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:26,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762477831] [2021-10-06 21:24:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:24:26,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:26,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:26,180 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:26,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:24:26,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:24:26,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:26,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:24:26,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:27,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:29,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:29,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762477831] [2021-10-06 21:24:29,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762477831] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:29,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:29,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:24:29,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026638833] [2021-10-06 21:24:29,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:24:29,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:24:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:24:29,716 INFO L87 Difference]: Start difference. First operand 1204 states and 4647 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:53,899 INFO L93 Difference]: Finished difference Result 1370 states and 5004 transitions. [2021-10-06 21:24:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:24:53,900 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:24:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:53,905 INFO L225 Difference]: With dead ends: 1370 [2021-10-06 21:24:53,905 INFO L226 Difference]: Without dead ends: 1348 [2021-10-06 21:24:53,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 10771.4ms TimeCoverageRelationStatistics Valid=347, Invalid=1058, Unknown=1, NotChecked=0, Total=1406 [2021-10-06 21:24:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-10-06 21:24:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1220. [2021-10-06 21:24:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 3.8580803937653814) internal successors, (4703), 1219 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 4703 transitions. [2021-10-06 21:24:53,938 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 4703 transitions. Word has length 18 [2021-10-06 21:24:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:53,938 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 4703 transitions. [2021-10-06 21:24:53,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 4703 transitions. [2021-10-06 21:24:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:24:53,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:53,943 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:53,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:54,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:54,157 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:24:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:54,158 INFO L82 PathProgramCache]: Analyzing trace with hash -617367569, now seen corresponding path program 57 times [2021-10-06 21:24:54,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:54,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324110909] [2021-10-06 21:24:54,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:24:54,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:54,160 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:54,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:24:55,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:24:55,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:55,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:24:55,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:58,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:59,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:59,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324110909] [2021-10-06 21:24:59,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324110909] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:59,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:59,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:24:59,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597472468] [2021-10-06 21:24:59,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:24:59,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:24:59,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=270, Unknown=1, NotChecked=0, Total=342 [2021-10-06 21:24:59,828 INFO L87 Difference]: Start difference. First operand 1220 states and 4703 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-06 21:25:40,125 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:25:40,145 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:25:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:25:40,361 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:25:40,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:40,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:40,562 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:25:40,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:25:40,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:25:40,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:25:40,566 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:25:40,570 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:25:40,570 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:25:40,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:25:40 BasicIcfg [2021-10-06 21:25:40,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:25:40,574 INFO L168 Benchmark]: Toolchain (without parser) took 844726.28 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.4 MB in the beginning and 83.5 MB in the end (delta: 46.9 MB). Peak memory consumption was 79.8 MB. Max. memory is 8.0 GB. [2021-10-06 21:25:40,574 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:25:40,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.96 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 119.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:25:40,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:25:40,575 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 116.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:25:40,575 INFO L168 Benchmark]: RCFGBuilder took 565.24 ms. Allocated memory is still 155.2 MB. Free memory was 116.9 MB in the beginning and 105.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:25:40,576 INFO L168 Benchmark]: TraceAbstraction took 843801.25 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 104.6 MB in the beginning and 83.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:25:40,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.96 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 119.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 116.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 565.24 ms. Allocated memory is still 155.2 MB. Free memory was 116.9 MB in the beginning and 105.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 843801.25 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 104.6 MB in the beginning and 83.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9830.6ms, 83 PlacesBefore, 30 PlacesAfterwards, 82 TransitionsBefore, 25 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 7 FixpointIterations, 54 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 85 TotalNumberOfCompositions, 458 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 458, positive: 458, positive conditional: 0, positive unconditional: 458, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 458, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 225, unknown conditional: 0, unknown unconditional: 225] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1220states) and FLOYD_HOARE automaton (currently 42 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 47 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 843606.2ms, OverallIterations: 66, TraceHistogramMax: 4, EmptinessCheckTime: 162.4ms, AutomataDifference: 702426.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9911.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2053 SDtfs, 8716 SDslu, 13298 SDs, 0 SdLazy, 15131 SolverSat, 2501 SolverUnsat, 160 SolverUnknown, 0 SolverNotchecked, 426017.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2775 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 1716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10741 ImplicationChecksByTransitivity, 322812.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1220occurred in iteration=65, InterpolantAutomatonStates: 1620, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1092.6ms AutomataMinimizationTime, 65 MinimizatonAttempts, 9828 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 389.1ms SsaConstructionTime, 4303.7ms SatisfiabilityAnalysisTime, 90245.0ms InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 139 NumberOfCheckSat, 1846 ConstructedInterpolants, 266 QuantifiedInterpolants, 24687 SizeOfPredicates, 257 NumberOfNonLiveVariables, 4472 ConjunctsInSsa, 809 ConjunctsInUnsatCore, 132 InterpolantComputations, 13 PerfectInterpolantSequences, 135/1178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown