/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:07:24,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:07:24,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:07:24,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:07:24,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:07:24,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:07:24,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:07:24,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:07:24,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:07:24,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:07:24,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:07:24,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:07:24,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:07:24,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:07:24,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:07:24,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:07:24,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:07:24,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:07:24,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:07:25,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:07:25,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:07:25,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:07:25,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:07:25,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:07:25,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:07:25,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:07:25,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:07:25,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:07:25,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:07:25,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:07:25,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:07:25,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:07:25,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:07:25,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:07:25,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:07:25,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:07:25,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:07:25,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:07:25,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:07:25,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:07:25,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:07:25,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:07:25,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:07:25,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:07:25,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:07:25,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:07:25,039 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:07:25,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:07:25,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:07:25,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:07:25,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:07:25,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:07:25,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:07:25,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:07:25,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:07:25,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:07:25,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:07:25,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:07:25,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:07:25,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:07:25,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:07:25,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:07:25,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:07:25,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:07:25,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:07:25,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:07:25,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:07:25,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:07:25,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:07:25,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:07:25,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:07:25,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:07:25,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:07:25,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:07:25,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:07:25,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:07:25,364 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:07:25,364 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:07:25,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3915df0b6/c93c0cf42ae045fb97f7b1e02355ab50/FLAG39d5aec43 [2020-10-12 20:07:25,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:07:25,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:07:25,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3915df0b6/c93c0cf42ae045fb97f7b1e02355ab50/FLAG39d5aec43 [2020-10-12 20:07:26,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3915df0b6/c93c0cf42ae045fb97f7b1e02355ab50 [2020-10-12 20:07:26,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:07:26,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:07:26,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:07:26,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:07:26,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:07:26,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e827995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26, skipping insertion in model container [2020-10-12 20:07:26,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:07:26,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:07:26,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:07:26,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:07:26,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:07:26,917 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:07:26,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26 WrapperNode [2020-10-12 20:07:26,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:07:26,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:07:26,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:07:26,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:07:26,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... [2020-10-12 20:07:26,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:07:26,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:07:26,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:07:26,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:07:26,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:07:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:07:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:07:27,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:07:27,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:07:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:07:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:07:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:07:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:07:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:07:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:07:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:07:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:07:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:07:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:07:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:07:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:07:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:07:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:07:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:07:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:07:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:07:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:07:28,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:07:28,101 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:07:28,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:07:28 BoogieIcfgContainer [2020-10-12 20:07:28,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:07:28,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:07:28,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:07:28,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:07:28,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:07:26" (1/3) ... [2020-10-12 20:07:28,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f3c8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:07:28, skipping insertion in model container [2020-10-12 20:07:28,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:07:26" (2/3) ... [2020-10-12 20:07:28,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f3c8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:07:28, skipping insertion in model container [2020-10-12 20:07:28,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:07:28" (3/3) ... [2020-10-12 20:07:28,114 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:07:28,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:07:28,132 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:07:28,145 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:07:28,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:07:28,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:07:28,171 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:07:28,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:07:28,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:07:28,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:07:28,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:07:28,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:07:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-12 20:07:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 20:07:28,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:28,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:28,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:28,211 INFO L82 PathProgramCache]: Analyzing trace with hash 455647170, now seen corresponding path program 1 times [2020-10-12 20:07:28,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:28,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671856822] [2020-10-12 20:07:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:31,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 20:07:31,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:07:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2726 [2020-10-12 20:07:31,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:07:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:07:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:07:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:07:31,656 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:31,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:31,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:31,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:31,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:07:31,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:31,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671856822] [2020-10-12 20:07:31,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:31,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:07:31,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248927729] [2020-10-12 20:07:31,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:07:31,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:31,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:07:31,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:31,797 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 8 states. [2020-10-12 20:07:32,193 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 20:07:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:33,413 INFO L93 Difference]: Finished difference Result 840 states and 1352 transitions. [2020-10-12 20:07:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:07:33,415 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-12 20:07:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:33,436 INFO L225 Difference]: With dead ends: 840 [2020-10-12 20:07:33,436 INFO L226 Difference]: Without dead ends: 718 [2020-10-12 20:07:33,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:07:33,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-12 20:07:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 319. [2020-10-12 20:07:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 20:07:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 474 transitions. [2020-10-12 20:07:33,537 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 474 transitions. Word has length 84 [2020-10-12 20:07:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:33,538 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 474 transitions. [2020-10-12 20:07:33,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:07:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 474 transitions. [2020-10-12 20:07:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 20:07:33,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:33,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:33,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:07:33,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash 980588779, now seen corresponding path program 1 times [2020-10-12 20:07:33,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:33,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423929692] [2020-10-12 20:07:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:33,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:34,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:34,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:07:34,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:07:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-12 20:07:34,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:07:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:07:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:07:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:35,008 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:35,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:35,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:35,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:07:35,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:35,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423929692] [2020-10-12 20:07:35,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:35,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:07:35,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257742262] [2020-10-12 20:07:35,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:07:35,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:07:35,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:35,081 INFO L87 Difference]: Start difference. First operand 319 states and 474 transitions. Second operand 8 states. [2020-10-12 20:07:37,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:37,152 INFO L93 Difference]: Finished difference Result 1375 states and 2117 transitions. [2020-10-12 20:07:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:07:37,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-12 20:07:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:37,162 INFO L225 Difference]: With dead ends: 1375 [2020-10-12 20:07:37,163 INFO L226 Difference]: Without dead ends: 1137 [2020-10-12 20:07:37,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-10-12 20:07:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1129. [2020-10-12 20:07:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-12 20:07:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1731 transitions. [2020-10-12 20:07:37,274 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1731 transitions. Word has length 85 [2020-10-12 20:07:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:37,277 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1731 transitions. [2020-10-12 20:07:37,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:07:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1731 transitions. [2020-10-12 20:07:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:07:37,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:37,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:37,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:07:37,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:37,292 INFO L82 PathProgramCache]: Analyzing trace with hash -366608356, now seen corresponding path program 1 times [2020-10-12 20:07:37,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:37,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878266104] [2020-10-12 20:07:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:38,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:07:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:07:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-12 20:07:38,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:07:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:07:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:38,546 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:38,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 20:07:38,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:38,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878266104] [2020-10-12 20:07:38,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:38,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:38,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141385602] [2020-10-12 20:07:38,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:07:38,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:07:38,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:07:38,631 INFO L87 Difference]: Start difference. First operand 1129 states and 1731 transitions. Second operand 6 states. [2020-10-12 20:07:38,852 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 20:07:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:39,769 INFO L93 Difference]: Finished difference Result 2982 states and 4622 transitions. [2020-10-12 20:07:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:07:39,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:07:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:39,781 INFO L225 Difference]: With dead ends: 2982 [2020-10-12 20:07:39,781 INFO L226 Difference]: Without dead ends: 1935 [2020-10-12 20:07:39,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-12 20:07:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1933. [2020-10-12 20:07:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2020-10-12 20:07:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2973 transitions. [2020-10-12 20:07:39,963 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2973 transitions. Word has length 86 [2020-10-12 20:07:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:39,963 INFO L479 AbstractCegarLoop]: Abstraction has 1933 states and 2973 transitions. [2020-10-12 20:07:39,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:07:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2973 transitions. [2020-10-12 20:07:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:07:39,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:39,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:39,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:07:39,967 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:39,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1826312211, now seen corresponding path program 1 times [2020-10-12 20:07:39,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:39,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329267312] [2020-10-12 20:07:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:40,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:07:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:07:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-12 20:07:40,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:07:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:07:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:40,816 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:40,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:40,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:40,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:40,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:07:40,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:40,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:40,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:40,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:40,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329267312] [2020-10-12 20:07:40,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:40,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:40,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737980500] [2020-10-12 20:07:40,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:07:40,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:40,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:07:40,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:07:40,867 INFO L87 Difference]: Start difference. First operand 1933 states and 2973 transitions. Second operand 6 states. [2020-10-12 20:07:41,090 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:07:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:42,396 INFO L93 Difference]: Finished difference Result 5258 states and 8141 transitions. [2020-10-12 20:07:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:07:42,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:07:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:42,415 INFO L225 Difference]: With dead ends: 5258 [2020-10-12 20:07:42,415 INFO L226 Difference]: Without dead ends: 3437 [2020-10-12 20:07:42,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2020-10-12 20:07:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 3435. [2020-10-12 20:07:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-10-12 20:07:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5278 transitions. [2020-10-12 20:07:42,664 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5278 transitions. Word has length 86 [2020-10-12 20:07:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:42,664 INFO L479 AbstractCegarLoop]: Abstraction has 3435 states and 5278 transitions. [2020-10-12 20:07:42,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:07:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5278 transitions. [2020-10-12 20:07:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:07:42,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:42,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:42,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:07:42,669 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash 446557118, now seen corresponding path program 1 times [2020-10-12 20:07:42,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:42,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659878964] [2020-10-12 20:07:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:07:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:07:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-12 20:07:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:07:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:07:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:43,503 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:43,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:43,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:43,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:43,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:07:43,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:43,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659878964] [2020-10-12 20:07:43,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:43,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:43,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285067974] [2020-10-12 20:07:43,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:07:43,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:07:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:07:43,558 INFO L87 Difference]: Start difference. First operand 3435 states and 5278 transitions. Second operand 6 states. [2020-10-12 20:07:43,738 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 20:07:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:44,973 INFO L93 Difference]: Finished difference Result 9674 states and 14947 transitions. [2020-10-12 20:07:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:07:44,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:07:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:45,003 INFO L225 Difference]: With dead ends: 9674 [2020-10-12 20:07:45,004 INFO L226 Difference]: Without dead ends: 6385 [2020-10-12 20:07:45,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2020-10-12 20:07:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6383. [2020-10-12 20:07:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6383 states. [2020-10-12 20:07:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 9805 transitions. [2020-10-12 20:07:45,465 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 9805 transitions. Word has length 86 [2020-10-12 20:07:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:45,466 INFO L479 AbstractCegarLoop]: Abstraction has 6383 states and 9805 transitions. [2020-10-12 20:07:45,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:07:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 9805 transitions. [2020-10-12 20:07:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:07:45,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:45,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:45,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:07:45,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1794251851, now seen corresponding path program 1 times [2020-10-12 20:07:45,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:45,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037274241] [2020-10-12 20:07:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:46,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:46,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:07:46,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:07:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-12 20:07:46,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:07:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 20:07:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:46,340 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:46,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:46,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:46,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:07:46,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:46,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037274241] [2020-10-12 20:07:46,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:46,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464535760] [2020-10-12 20:07:46,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:07:46,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:46,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:07:46,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:07:46,401 INFO L87 Difference]: Start difference. First operand 6383 states and 9805 transitions. Second operand 6 states. [2020-10-12 20:07:46,580 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 20:07:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:48,061 INFO L93 Difference]: Finished difference Result 18705 states and 28747 transitions. [2020-10-12 20:07:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:07:48,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-12 20:07:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:48,115 INFO L225 Difference]: With dead ends: 18705 [2020-10-12 20:07:48,115 INFO L226 Difference]: Without dead ends: 12381 [2020-10-12 20:07:48,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:07:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2020-10-12 20:07:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12379. [2020-10-12 20:07:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12379 states. [2020-10-12 20:07:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12379 states to 12379 states and 18878 transitions. [2020-10-12 20:07:48,921 INFO L78 Accepts]: Start accepts. Automaton has 12379 states and 18878 transitions. Word has length 86 [2020-10-12 20:07:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:48,921 INFO L479 AbstractCegarLoop]: Abstraction has 12379 states and 18878 transitions. [2020-10-12 20:07:48,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:07:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12379 states and 18878 transitions. [2020-10-12 20:07:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:07:48,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:48,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:48,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:07:48,928 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1647430277, now seen corresponding path program 1 times [2020-10-12 20:07:48,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:48,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162915215] [2020-10-12 20:07:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:49,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:49,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:07:49,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:07:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-12 20:07:49,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:07:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:07:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:49,657 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:49,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:49,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:49,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:07:49,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:49,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162915215] [2020-10-12 20:07:49,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:49,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:49,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921264968] [2020-10-12 20:07:49,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:07:49,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:49,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:07:49,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:07:49,707 INFO L87 Difference]: Start difference. First operand 12379 states and 18878 transitions. Second operand 6 states. [2020-10-12 20:07:49,893 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:07:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:51,826 INFO L93 Difference]: Finished difference Result 36594 states and 55817 transitions. [2020-10-12 20:07:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:07:51,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 20:07:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:51,884 INFO L225 Difference]: With dead ends: 36594 [2020-10-12 20:07:51,884 INFO L226 Difference]: Without dead ends: 24283 [2020-10-12 20:07:51,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24283 states. [2020-10-12 20:07:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24283 to 24281. [2020-10-12 20:07:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24281 states. [2020-10-12 20:07:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 36853 transitions. [2020-10-12 20:07:53,688 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 36853 transitions. Word has length 87 [2020-10-12 20:07:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:53,689 INFO L479 AbstractCegarLoop]: Abstraction has 24281 states and 36853 transitions. [2020-10-12 20:07:53,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:07:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 36853 transitions. [2020-10-12 20:07:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:07:53,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:53,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:53,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:07:53,699 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1375323702, now seen corresponding path program 1 times [2020-10-12 20:07:53,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:53,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583557345] [2020-10-12 20:07:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:55,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:07:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:07:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1504 [2020-10-12 20:07:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:07:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 20:07:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:55,552 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:55,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:55,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:55,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:07:55,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:55,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583557345] [2020-10-12 20:07:55,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:55,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:07:55,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775818505] [2020-10-12 20:07:55,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:07:55,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:55,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:07:55,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:07:55,619 INFO L87 Difference]: Start difference. First operand 24281 states and 36853 transitions. Second operand 11 states. [2020-10-12 20:07:55,841 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:08:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:02,858 INFO L93 Difference]: Finished difference Result 110240 states and 166746 transitions. [2020-10-12 20:08:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:08:02,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:08:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:03,110 INFO L225 Difference]: With dead ends: 110240 [2020-10-12 20:08:03,111 INFO L226 Difference]: Without dead ends: 95313 [2020-10-12 20:08:03,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:08:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95313 states. [2020-10-12 20:08:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95313 to 24595. [2020-10-12 20:08:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24595 states. [2020-10-12 20:08:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24595 states to 24595 states and 37277 transitions. [2020-10-12 20:08:06,291 INFO L78 Accepts]: Start accepts. Automaton has 24595 states and 37277 transitions. Word has length 87 [2020-10-12 20:08:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:06,292 INFO L479 AbstractCegarLoop]: Abstraction has 24595 states and 37277 transitions. [2020-10-12 20:08:06,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:08:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 24595 states and 37277 transitions. [2020-10-12 20:08:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:08:06,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:06,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:06,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:08:06,302 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1607470550, now seen corresponding path program 1 times [2020-10-12 20:08:06,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:06,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903546921] [2020-10-12 20:08:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:07,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:07,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:08:07,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:08:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-12 20:08:07,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:08:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:08:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:08,184 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:08:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:08,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:08,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:08,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:08:08,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:08,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903546921] [2020-10-12 20:08:08,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:08,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:08:08,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248351165] [2020-10-12 20:08:08,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:08:08,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:08:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:08:08,250 INFO L87 Difference]: Start difference. First operand 24595 states and 37277 transitions. Second operand 11 states. [2020-10-12 20:08:08,576 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:08:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:18,066 INFO L93 Difference]: Finished difference Result 103344 states and 156925 transitions. [2020-10-12 20:08:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 20:08:18,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:08:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:18,210 INFO L225 Difference]: With dead ends: 103344 [2020-10-12 20:08:18,210 INFO L226 Difference]: Without dead ends: 93070 [2020-10-12 20:08:18,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-12 20:08:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93070 states. [2020-10-12 20:08:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93070 to 25191. [2020-10-12 20:08:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25191 states. [2020-10-12 20:08:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25191 states to 25191 states and 38123 transitions. [2020-10-12 20:08:21,507 INFO L78 Accepts]: Start accepts. Automaton has 25191 states and 38123 transitions. Word has length 87 [2020-10-12 20:08:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:21,508 INFO L479 AbstractCegarLoop]: Abstraction has 25191 states and 38123 transitions. [2020-10-12 20:08:21,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:08:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 25191 states and 38123 transitions. [2020-10-12 20:08:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:08:21,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:21,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:21,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:08:21,517 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:21,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:21,518 INFO L82 PathProgramCache]: Analyzing trace with hash -667249290, now seen corresponding path program 1 times [2020-10-12 20:08:21,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:21,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437756261] [2020-10-12 20:08:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:23,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:08:23,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:08:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-12 20:08:23,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:08:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 20:08:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:23,893 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:08:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:23,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:23,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:23,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:08:23,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:08:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:23,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437756261] [2020-10-12 20:08:23,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:23,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:08:23,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670197411] [2020-10-12 20:08:23,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:08:23,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:23,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:08:23,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:08:23,983 INFO L87 Difference]: Start difference. First operand 25191 states and 38123 transitions. Second operand 11 states. [2020-10-12 20:08:24,209 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 20:08:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:41,441 INFO L93 Difference]: Finished difference Result 176398 states and 267657 transitions. [2020-10-12 20:08:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 20:08:41,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:08:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:41,690 INFO L225 Difference]: With dead ends: 176398 [2020-10-12 20:08:41,690 INFO L226 Difference]: Without dead ends: 170787 [2020-10-12 20:08:41,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 20:08:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170787 states. [2020-10-12 20:08:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170787 to 25191. [2020-10-12 20:08:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25191 states. [2020-10-12 20:08:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25191 states to 25191 states and 38119 transitions. [2020-10-12 20:08:46,334 INFO L78 Accepts]: Start accepts. Automaton has 25191 states and 38119 transitions. Word has length 87 [2020-10-12 20:08:46,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:46,335 INFO L479 AbstractCegarLoop]: Abstraction has 25191 states and 38119 transitions. [2020-10-12 20:08:46,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:08:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 25191 states and 38119 transitions. [2020-10-12 20:08:46,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:08:46,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:46,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:46,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:08:46,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 962576022, now seen corresponding path program 1 times [2020-10-12 20:08:46,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:46,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745584460] [2020-10-12 20:08:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:46,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:47,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:08:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:08:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-10-12 20:08:47,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:08:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:08:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:48,153 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:08:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:48,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:48,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:48,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:08:48,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:48,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745584460] [2020-10-12 20:08:48,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:48,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:08:48,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606669542] [2020-10-12 20:08:48,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:08:48,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:48,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:08:48,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:08:48,221 INFO L87 Difference]: Start difference. First operand 25191 states and 38119 transitions. Second operand 11 states. [2020-10-12 20:08:48,451 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:09:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:01,628 INFO L93 Difference]: Finished difference Result 123921 states and 187085 transitions. [2020-10-12 20:09:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:09:01,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-12 20:09:01,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:01,774 INFO L225 Difference]: With dead ends: 123921 [2020-10-12 20:09:01,775 INFO L226 Difference]: Without dead ends: 104341 [2020-10-12 20:09:01,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:09:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104341 states. [2020-10-12 20:09:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104341 to 25617. [2020-10-12 20:09:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25617 states. [2020-10-12 20:09:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25617 states to 25617 states and 38667 transitions. [2020-10-12 20:09:05,031 INFO L78 Accepts]: Start accepts. Automaton has 25617 states and 38667 transitions. Word has length 87 [2020-10-12 20:09:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:05,031 INFO L479 AbstractCegarLoop]: Abstraction has 25617 states and 38667 transitions. [2020-10-12 20:09:05,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:09:05,031 INFO L276 IsEmpty]: Start isEmpty. Operand 25617 states and 38667 transitions. [2020-10-12 20:09:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:09:05,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:05,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:05,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:09:05,039 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1289604533, now seen corresponding path program 1 times [2020-10-12 20:09:05,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:05,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758928618] [2020-10-12 20:09:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:09:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:09:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:09:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:06,791 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:09:06,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:06,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:06,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:06,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:09:06,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:09:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:09:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:09:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:09:06,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758928618] [2020-10-12 20:09:06,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:06,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:09:06,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976419306] [2020-10-12 20:09:06,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:09:06,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:06,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:09:06,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:09:06,859 INFO L87 Difference]: Start difference. First operand 25617 states and 38667 transitions. Second operand 11 states. [2020-10-12 20:09:07,083 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:09:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:22,913 INFO L93 Difference]: Finished difference Result 122380 states and 184907 transitions. [2020-10-12 20:09:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:09:22,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-12 20:09:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:23,023 INFO L225 Difference]: With dead ends: 122380 [2020-10-12 20:09:23,024 INFO L226 Difference]: Without dead ends: 98340 [2020-10-12 20:09:23,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:09:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98340 states. [2020-10-12 20:09:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98340 to 25976. [2020-10-12 20:09:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25976 states. [2020-10-12 20:09:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25976 states to 25976 states and 39078 transitions. [2020-10-12 20:09:26,488 INFO L78 Accepts]: Start accepts. Automaton has 25976 states and 39078 transitions. Word has length 88 [2020-10-12 20:09:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:26,488 INFO L479 AbstractCegarLoop]: Abstraction has 25976 states and 39078 transitions. [2020-10-12 20:09:26,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:09:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 25976 states and 39078 transitions. [2020-10-12 20:09:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:09:26,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:26,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:26,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:09:26,496 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:26,496 INFO L82 PathProgramCache]: Analyzing trace with hash 378941936, now seen corresponding path program 1 times [2020-10-12 20:09:26,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:26,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190958843] [2020-10-12 20:09:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:26,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:09:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:26,878 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:09:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:09:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:09:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:09:26,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190958843] [2020-10-12 20:09:26,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:26,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:09:26,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395765422] [2020-10-12 20:09:26,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:09:26,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:26,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:09:26,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:09:26,921 INFO L87 Difference]: Start difference. First operand 25976 states and 39078 transitions. Second operand 5 states. [2020-10-12 20:09:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:34,132 INFO L93 Difference]: Finished difference Result 49946 states and 75207 transitions. [2020-10-12 20:09:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:09:34,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:09:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:34,184 INFO L225 Difference]: With dead ends: 49946 [2020-10-12 20:09:34,185 INFO L226 Difference]: Without dead ends: 49944 [2020-10-12 20:09:34,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:09:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49944 states. [2020-10-12 20:09:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49944 to 26616. [2020-10-12 20:09:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26616 states. [2020-10-12 20:09:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26616 states to 26616 states and 39718 transitions. [2020-10-12 20:09:37,659 INFO L78 Accepts]: Start accepts. Automaton has 26616 states and 39718 transitions. Word has length 88 [2020-10-12 20:09:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:09:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 26616 states and 39718 transitions. [2020-10-12 20:09:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:09:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 26616 states and 39718 transitions. [2020-10-12 20:09:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:09:37,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:09:37,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:09:37,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:09:37,670 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:09:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:09:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1972449807, now seen corresponding path program 1 times [2020-10-12 20:09:37,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:09:37,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439169132] [2020-10-12 20:09:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:09:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:09:39,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:09:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-10-12 20:09:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:09:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:09:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:09:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:39,782 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:09:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:09:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:09:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:09:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:09:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:09:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:09:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:09:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:09:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:09:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:09:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:09:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:09:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:09:39,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439169132] [2020-10-12 20:09:39,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:09:39,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:09:39,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419029283] [2020-10-12 20:09:39,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:09:39,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:09:39,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:09:39,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:09:39,820 INFO L87 Difference]: Start difference. First operand 26616 states and 39718 transitions. Second operand 10 states. [2020-10-12 20:09:40,023 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:09:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:09:56,731 INFO L93 Difference]: Finished difference Result 124539 states and 187262 transitions. [2020-10-12 20:09:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 20:09:56,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-12 20:09:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:09:56,845 INFO L225 Difference]: With dead ends: 124539 [2020-10-12 20:09:56,845 INFO L226 Difference]: Without dead ends: 98969 [2020-10-12 20:09:56,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-12 20:09:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98969 states. [2020-10-12 20:10:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98969 to 38371. [2020-10-12 20:10:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38371 states. [2020-10-12 20:10:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38371 states to 38371 states and 57416 transitions. [2020-10-12 20:10:02,845 INFO L78 Accepts]: Start accepts. Automaton has 38371 states and 57416 transitions. Word has length 89 [2020-10-12 20:10:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:10:02,845 INFO L479 AbstractCegarLoop]: Abstraction has 38371 states and 57416 transitions. [2020-10-12 20:10:02,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:10:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 38371 states and 57416 transitions. [2020-10-12 20:10:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:10:02,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:10:02,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:10:02,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:10:02,857 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:10:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:10:02,857 INFO L82 PathProgramCache]: Analyzing trace with hash -879267567, now seen corresponding path program 1 times [2020-10-12 20:10:02,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:10:02,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437687666] [2020-10-12 20:10:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:10:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:10:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:10:02,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:10:02,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:10:02,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:10:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 20:10:02,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:10:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:10:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:10:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:10:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:10:03,224 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:10:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:10:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:10:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:10:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:10:03,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:10:03,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:10:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:10:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:10:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:10:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:10:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:10:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:10:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:10:03,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437687666] [2020-10-12 20:10:03,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:10:03,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:10:03,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625346013] [2020-10-12 20:10:03,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:10:03,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:10:03,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:10:03,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:10:03,270 INFO L87 Difference]: Start difference. First operand 38371 states and 57416 transitions. Second operand 5 states. [2020-10-12 20:10:03,454 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:10:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:10:15,792 INFO L93 Difference]: Finished difference Result 104683 states and 156590 transitions. [2020-10-12 20:10:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:10:15,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:10:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:10:15,872 INFO L225 Difference]: With dead ends: 104683 [2020-10-12 20:10:15,873 INFO L226 Difference]: Without dead ends: 69129 [2020-10-12 20:10:15,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:10:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69129 states. [2020-10-12 20:10:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69129 to 69127. [2020-10-12 20:10:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69127 states. [2020-10-12 20:10:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69127 states to 69127 states and 102596 transitions. [2020-10-12 20:10:26,429 INFO L78 Accepts]: Start accepts. Automaton has 69127 states and 102596 transitions. Word has length 89 [2020-10-12 20:10:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:10:26,429 INFO L479 AbstractCegarLoop]: Abstraction has 69127 states and 102596 transitions. [2020-10-12 20:10:26,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:10:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 69127 states and 102596 transitions. [2020-10-12 20:10:26,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:10:26,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:10:26,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:10:26,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:10:26,438 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:10:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:10:26,438 INFO L82 PathProgramCache]: Analyzing trace with hash -732364530, now seen corresponding path program 1 times [2020-10-12 20:10:26,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:10:26,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207903656] [2020-10-12 20:10:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:10:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:10:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:10:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:10:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:10:27,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:10:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:10:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:10:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-12 20:10:27,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:10:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:10:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:10:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 20:10:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:10:28,163 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:10:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:10:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:10:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:10:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:10:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:10:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:10:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:10:28,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:10:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:10:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:10:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:10:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:10:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:10:28,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207903656] [2020-10-12 20:10:28,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:10:28,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:10:28,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432921401] [2020-10-12 20:10:28,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:10:28,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:10:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:10:28,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:10:28,209 INFO L87 Difference]: Start difference. First operand 69127 states and 102596 transitions. Second operand 10 states. [2020-10-12 20:10:28,400 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 20:11:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:05,092 INFO L93 Difference]: Finished difference Result 258146 states and 383393 transitions. [2020-10-12 20:11:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:11:05,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-12 20:11:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:05,332 INFO L225 Difference]: With dead ends: 258146 [2020-10-12 20:11:05,332 INFO L226 Difference]: Without dead ends: 190484 [2020-10-12 20:11:05,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:11:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190484 states.