/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:42:57,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:42:57,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:42:57,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:42:57,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:42:57,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:42:57,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:42:58,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:42:58,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:42:58,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:42:58,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:42:58,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:42:58,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:42:58,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:42:58,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:42:58,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:42:58,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:42:58,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:42:58,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:42:58,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:42:58,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:42:58,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:42:58,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:42:58,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:42:58,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:42:58,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:42:58,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:42:58,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:42:58,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:42:58,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:42:58,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:42:58,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:42:58,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:42:58,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:42:58,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:42:58,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:42:58,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:42:58,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:42:58,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:42:58,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:42:58,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:42:58,030 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 [2020-10-15 03:42:58,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:42:58,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:42:58,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:42:58,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:42:58,053 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:42:58,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:42:58,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:42:58,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:42:58,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:42:58,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:42:58,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:42:58,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:42:58,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:42:58,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:42:58,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:42:58,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:42:58,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:42:58,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:42:58,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:42:58,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:42:58,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:42:58,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:42:58,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:42:58,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:42:58,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:42:58,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:42:58,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:42:58,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:42:58,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:42:58,058 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:42:58,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:42:58,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:42:58,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:42:58,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:42:58,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:42:58,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:42:58,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e89a635b/952f733e27ef481cbae61d8d4b1108d4/FLAG2c5165a85 [2020-10-15 03:42:59,102 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:42:59,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:42:59,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e89a635b/952f733e27ef481cbae61d8d4b1108d4/FLAG2c5165a85 [2020-10-15 03:42:59,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e89a635b/952f733e27ef481cbae61d8d4b1108d4 [2020-10-15 03:42:59,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:42:59,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:42:59,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:59,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:42:59,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:42:59,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:59" (1/1) ... [2020-10-15 03:42:59,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e58bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:59, skipping insertion in model container [2020-10-15 03:42:59,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:59" (1/1) ... [2020-10-15 03:42:59,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:42:59,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:43:00,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:43:00,181 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:43:00,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:43:00,404 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:43:00,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00 WrapperNode [2020-10-15 03:43:00,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:43:00,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:43:00,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:43:00,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:43:00,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:43:00,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:43:00,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:43:00,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:43:00,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (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 [2020-10-15 03:43:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:43:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:43:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:43:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:43:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:43:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:43:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:43:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:43:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:43:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:43:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:43:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:43:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:43:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:43:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:43:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:43:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:43:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:43:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:43:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:43:00,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:43:02,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:43:02,713 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:43:02,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:43:02 BoogieIcfgContainer [2020-10-15 03:43:02,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:43:02,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:43:02,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:43:02,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:43:02,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:42:59" (1/3) ... [2020-10-15 03:43:02,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ef6ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:43:02, skipping insertion in model container [2020-10-15 03:43:02,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (2/3) ... [2020-10-15 03:43:02,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ef6ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:43:02, skipping insertion in model container [2020-10-15 03:43:02,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:43:02" (3/3) ... [2020-10-15 03:43:02,729 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:43:02,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:43:02,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-15 03:43:02,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 03:43:02,790 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:43:02,790 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:43:02,790 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:43:02,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:43:02,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:43:02,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:43:02,791 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:43:02,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:43:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states. [2020-10-15 03:43:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:43:02,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:02,839 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] [2020-10-15 03:43:02,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:02,846 INFO L82 PathProgramCache]: Analyzing trace with hash 393858653, now seen corresponding path program 1 times [2020-10-15 03:43:02,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:02,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956408563] [2020-10-15 03:43:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:08,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:08,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:43:08,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:43:08,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:08,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:43:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:43:08,899 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:43:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:08,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:08,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:43:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:09,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956408563] [2020-10-15 03:43:09,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:09,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:09,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726420821] [2020-10-15 03:43:09,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:09,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:09,040 INFO L87 Difference]: Start difference. First operand 461 states. Second operand 8 states. [2020-10-15 03:43:09,542 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-15 03:43:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:13,767 INFO L93 Difference]: Finished difference Result 1463 states and 2414 transitions. [2020-10-15 03:43:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:43:13,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-15 03:43:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:13,807 INFO L225 Difference]: With dead ends: 1463 [2020-10-15 03:43:13,807 INFO L226 Difference]: Without dead ends: 1313 [2020-10-15 03:43:13,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:43:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-10-15 03:43:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 468. [2020-10-15 03:43:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-15 03:43:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 606 transitions. [2020-10-15 03:43:13,923 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 606 transitions. Word has length 54 [2020-10-15 03:43:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:13,924 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 606 transitions. [2020-10-15 03:43:13,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 606 transitions. [2020-10-15 03:43:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:43:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:13,930 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] [2020-10-15 03:43:13,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:43:13,930 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 773986992, now seen corresponding path program 1 times [2020-10-15 03:43:13,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:13,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036481832] [2020-10-15 03:43:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:43:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:43:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:43:18,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:18,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:18,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:43:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:19,628 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:43:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:19,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:19,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:19,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:19,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 03:43:19,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:19,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:19,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:19,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036481832] [2020-10-15 03:43:19,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:19,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:19,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933683638] [2020-10-15 03:43:19,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:19,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:19,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:19,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:19,763 INFO L87 Difference]: Start difference. First operand 468 states and 606 transitions. Second operand 8 states. [2020-10-15 03:43:20,143 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-15 03:43:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:22,802 INFO L93 Difference]: Finished difference Result 887 states and 1217 transitions. [2020-10-15 03:43:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:43:22,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-15 03:43:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:22,809 INFO L225 Difference]: With dead ends: 887 [2020-10-15 03:43:22,809 INFO L226 Difference]: Without dead ends: 724 [2020-10-15 03:43:22,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:43:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-15 03:43:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 476. [2020-10-15 03:43:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-15 03:43:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 612 transitions. [2020-10-15 03:43:22,852 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 612 transitions. Word has length 54 [2020-10-15 03:43:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:22,853 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 612 transitions. [2020-10-15 03:43:22,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 612 transitions. [2020-10-15 03:43:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:43:22,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:22,860 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] [2020-10-15 03:43:22,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:43:22,863 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:22,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2022835488, now seen corresponding path program 1 times [2020-10-15 03:43:22,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:22,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503440665] [2020-10-15 03:43:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:27,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:27,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:27,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:43:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:28,526 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:43:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:28,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:43:28,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:28,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:28,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503440665] [2020-10-15 03:43:28,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:28,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:28,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955648722] [2020-10-15 03:43:28,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:28,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:28,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:28,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:28,588 INFO L87 Difference]: Start difference. First operand 476 states and 612 transitions. Second operand 8 states. [2020-10-15 03:43:29,028 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-15 03:43:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:31,538 INFO L93 Difference]: Finished difference Result 1036 states and 1436 transitions. [2020-10-15 03:43:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:43:31,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-15 03:43:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:31,545 INFO L225 Difference]: With dead ends: 1036 [2020-10-15 03:43:31,545 INFO L226 Difference]: Without dead ends: 793 [2020-10-15 03:43:31,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:43:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-10-15 03:43:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 459. [2020-10-15 03:43:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-15 03:43:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 601 transitions. [2020-10-15 03:43:31,591 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 601 transitions. Word has length 55 [2020-10-15 03:43:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:31,593 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 601 transitions. [2020-10-15 03:43:31,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 601 transitions. [2020-10-15 03:43:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:43:31,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:31,598 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] [2020-10-15 03:43:31,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:43:31,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:31,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1437793739, now seen corresponding path program 1 times [2020-10-15 03:43:31,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:31,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288919856] [2020-10-15 03:43:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:31,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:36,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:43:36,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:43:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:43:36,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:36,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:43:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:43:37,275 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:43:37,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:37,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:43:37,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:37,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:37,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288919856] [2020-10-15 03:43:37,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:37,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:37,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614290579] [2020-10-15 03:43:37,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:37,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:37,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:37,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:37,358 INFO L87 Difference]: Start difference. First operand 459 states and 601 transitions. Second operand 8 states. [2020-10-15 03:43:37,898 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-15 03:43:39,952 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-15 03:43:40,239 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-15 03:43:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:42,988 INFO L93 Difference]: Finished difference Result 1444 states and 2031 transitions. [2020-10-15 03:43:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:43:42,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 03:43:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:42,998 INFO L225 Difference]: With dead ends: 1444 [2020-10-15 03:43:42,998 INFO L226 Difference]: Without dead ends: 1265 [2020-10-15 03:43:43,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:43:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-15 03:43:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 572. [2020-10-15 03:43:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-10-15 03:43:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 765 transitions. [2020-10-15 03:43:43,077 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 765 transitions. Word has length 56 [2020-10-15 03:43:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:43,077 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 765 transitions. [2020-10-15 03:43:43,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:43,077 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 765 transitions. [2020-10-15 03:43:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:43:43,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:43,080 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] [2020-10-15 03:43:43,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:43:43,081 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1543834670, now seen corresponding path program 1 times [2020-10-15 03:43:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:43,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591164202] [2020-10-15 03:43:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:48,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:43:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:43:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:43:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:48,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:43:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:48,730 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:43:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:48,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:48,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:48,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:43:48,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:48,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:43:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:48,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591164202] [2020-10-15 03:43:48,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:48,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:48,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196862073] [2020-10-15 03:43:48,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:48,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:48,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:48,805 INFO L87 Difference]: Start difference. First operand 572 states and 765 transitions. Second operand 8 states. [2020-10-15 03:43:49,821 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 272 [2020-10-15 03:43:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:52,839 INFO L93 Difference]: Finished difference Result 2195 states and 3157 transitions. [2020-10-15 03:43:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 03:43:52,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 03:43:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:52,848 INFO L225 Difference]: With dead ends: 2195 [2020-10-15 03:43:52,848 INFO L226 Difference]: Without dead ends: 1958 [2020-10-15 03:43:52,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:43:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2020-10-15 03:43:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 479. [2020-10-15 03:43:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-15 03:43:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 624 transitions. [2020-10-15 03:43:52,898 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 624 transitions. Word has length 56 [2020-10-15 03:43:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:52,899 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 624 transitions. [2020-10-15 03:43:52,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 624 transitions. [2020-10-15 03:43:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:43:52,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:52,900 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] [2020-10-15 03:43:52,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:43:52,901 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1806152696, now seen corresponding path program 1 times [2020-10-15 03:43:52,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:52,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962336845] [2020-10-15 03:43:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:57,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:57,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:43:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:58,460 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:43:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:58,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962336845] [2020-10-15 03:43:58,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:58,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:58,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859597357] [2020-10-15 03:43:58,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:58,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:58,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:58,497 INFO L87 Difference]: Start difference. First operand 479 states and 624 transitions. Second operand 9 states. [2020-10-15 03:43:58,916 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-15 03:44:01,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:01,338 INFO L93 Difference]: Finished difference Result 1717 states and 2451 transitions. [2020-10-15 03:44:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:44:01,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-15 03:44:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:01,346 INFO L225 Difference]: With dead ends: 1717 [2020-10-15 03:44:01,347 INFO L226 Difference]: Without dead ends: 1432 [2020-10-15 03:44:01,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:44:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-15 03:44:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 775. [2020-10-15 03:44:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-10-15 03:44:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1076 transitions. [2020-10-15 03:44:01,441 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1076 transitions. Word has length 57 [2020-10-15 03:44:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:01,442 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1076 transitions. [2020-10-15 03:44:01,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1076 transitions. [2020-10-15 03:44:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:44:01,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:01,444 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] [2020-10-15 03:44:01,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:44:01,445 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:01,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:01,445 INFO L82 PathProgramCache]: Analyzing trace with hash -10038574, now seen corresponding path program 1 times [2020-10-15 03:44:01,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:01,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161713007] [2020-10-15 03:44:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:06,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:06,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:44:06,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:44:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:44:06,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:06,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:44:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:44:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:06,861 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:06,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:06,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:06,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:06,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:44:06,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:06,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:06,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161713007] [2020-10-15 03:44:06,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:06,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:44:06,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482296973] [2020-10-15 03:44:06,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:06,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:06,906 INFO L87 Difference]: Start difference. First operand 775 states and 1076 transitions. Second operand 6 states. [2020-10-15 03:44:07,329 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-15 03:44:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:08,835 INFO L93 Difference]: Finished difference Result 2297 states and 3372 transitions. [2020-10-15 03:44:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:08,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:44:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:08,848 INFO L225 Difference]: With dead ends: 2297 [2020-10-15 03:44:08,848 INFO L226 Difference]: Without dead ends: 1943 [2020-10-15 03:44:08,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:08,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-10-15 03:44:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1209. [2020-10-15 03:44:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-15 03:44:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1720 transitions. [2020-10-15 03:44:09,006 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1720 transitions. Word has length 69 [2020-10-15 03:44:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:09,006 INFO L479 AbstractCegarLoop]: Abstraction has 1209 states and 1720 transitions. [2020-10-15 03:44:09,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1720 transitions. [2020-10-15 03:44:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:44:09,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:09,010 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] [2020-10-15 03:44:09,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:44:09,010 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:09,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1204834563, now seen corresponding path program 1 times [2020-10-15 03:44:09,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:09,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638552807] [2020-10-15 03:44:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:14,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:14,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:44:14,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:44:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:44:14,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:14,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:44:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:14,458 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:14,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:14,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:14,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638552807] [2020-10-15 03:44:14,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:14,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:14,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978150202] [2020-10-15 03:44:14,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:14,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:14,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:14,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:14,512 INFO L87 Difference]: Start difference. First operand 1209 states and 1720 transitions. Second operand 6 states. [2020-10-15 03:44:14,940 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-15 03:44:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:16,925 INFO L93 Difference]: Finished difference Result 2758 states and 4016 transitions. [2020-10-15 03:44:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:16,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:44:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:16,935 INFO L225 Difference]: With dead ends: 2758 [2020-10-15 03:44:16,936 INFO L226 Difference]: Without dead ends: 2049 [2020-10-15 03:44:16,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2020-10-15 03:44:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2020-10-15 03:44:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2047 states. [2020-10-15 03:44:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2940 transitions. [2020-10-15 03:44:17,171 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2940 transitions. Word has length 70 [2020-10-15 03:44:17,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:17,172 INFO L479 AbstractCegarLoop]: Abstraction has 2047 states and 2940 transitions. [2020-10-15 03:44:17,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2940 transitions. [2020-10-15 03:44:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:17,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:17,176 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] [2020-10-15 03:44:17,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:44:17,176 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 118280078, now seen corresponding path program 1 times [2020-10-15 03:44:17,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:17,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26727624] [2020-10-15 03:44:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:19,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:19,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-15 03:44:19,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:19,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:44:19,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:19,733 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:44:19,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:19,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:19,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26727624] [2020-10-15 03:44:19,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:19,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:19,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584582865] [2020-10-15 03:44:19,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:19,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:19,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:19,780 INFO L87 Difference]: Start difference. First operand 2047 states and 2940 transitions. Second operand 6 states. [2020-10-15 03:44:20,223 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:44:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:21,818 INFO L93 Difference]: Finished difference Result 5065 states and 7497 transitions. [2020-10-15 03:44:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:21,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:44:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:21,830 INFO L225 Difference]: With dead ends: 5065 [2020-10-15 03:44:21,830 INFO L226 Difference]: Without dead ends: 3376 [2020-10-15 03:44:21,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2020-10-15 03:44:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3374. [2020-10-15 03:44:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3374 states. [2020-10-15 03:44:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 4962 transitions. [2020-10-15 03:44:22,305 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 4962 transitions. Word has length 71 [2020-10-15 03:44:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:22,305 INFO L479 AbstractCegarLoop]: Abstraction has 3374 states and 4962 transitions. [2020-10-15 03:44:22,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 4962 transitions. [2020-10-15 03:44:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:22,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:22,311 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] [2020-10-15 03:44:22,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:44:22,311 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:22,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:22,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1643542836, now seen corresponding path program 1 times [2020-10-15 03:44:22,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:22,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53658982] [2020-10-15 03:44:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:27,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:44:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:44:27,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 03:44:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:27,759 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:27,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53658982] [2020-10-15 03:44:27,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:27,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:27,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728569644] [2020-10-15 03:44:27,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:27,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:27,803 INFO L87 Difference]: Start difference. First operand 3374 states and 4962 transitions. Second operand 6 states. [2020-10-15 03:44:28,222 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:44:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:29,714 INFO L93 Difference]: Finished difference Result 7591 states and 11308 transitions. [2020-10-15 03:44:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:29,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:44:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:29,732 INFO L225 Difference]: With dead ends: 7591 [2020-10-15 03:44:29,732 INFO L226 Difference]: Without dead ends: 4616 [2020-10-15 03:44:29,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2020-10-15 03:44:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4614. [2020-10-15 03:44:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4614 states. [2020-10-15 03:44:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 6816 transitions. [2020-10-15 03:44:30,241 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 6816 transitions. Word has length 71 [2020-10-15 03:44:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:30,241 INFO L479 AbstractCegarLoop]: Abstraction has 4614 states and 6816 transitions. [2020-10-15 03:44:30,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 6816 transitions. [2020-10-15 03:44:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:30,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:30,246 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] [2020-10-15 03:44:30,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:44:30,246 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1009807151, now seen corresponding path program 1 times [2020-10-15 03:44:30,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:30,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683698730] [2020-10-15 03:44:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:44:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-15 03:44:31,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:31,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:44:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:31,721 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:31,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:31,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:44:31,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:31,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:31,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683698730] [2020-10-15 03:44:31,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:31,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:31,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876743140] [2020-10-15 03:44:31,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:31,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:31,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:31,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:31,781 INFO L87 Difference]: Start difference. First operand 4614 states and 6816 transitions. Second operand 6 states. [2020-10-15 03:44:32,225 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:44:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:33,896 INFO L93 Difference]: Finished difference Result 11500 states and 17192 transitions. [2020-10-15 03:44:33,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:33,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:44:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:33,928 INFO L225 Difference]: With dead ends: 11500 [2020-10-15 03:44:33,928 INFO L226 Difference]: Without dead ends: 7054 [2020-10-15 03:44:33,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2020-10-15 03:44:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 7052. [2020-10-15 03:44:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7052 states. [2020-10-15 03:44:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 10466 transitions. [2020-10-15 03:44:34,739 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 10466 transitions. Word has length 71 [2020-10-15 03:44:34,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:34,740 INFO L479 AbstractCegarLoop]: Abstraction has 7052 states and 10466 transitions. [2020-10-15 03:44:34,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 10466 transitions. [2020-10-15 03:44:34,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:34,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:34,745 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] [2020-10-15 03:44:34,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:44:34,745 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:34,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:34,745 INFO L82 PathProgramCache]: Analyzing trace with hash 122517078, now seen corresponding path program 1 times [2020-10-15 03:44:34,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:34,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878528550] [2020-10-15 03:44:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:36,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:36,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:36,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:36,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-10-15 03:44:36,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:36,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:44:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:44:36,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:36,521 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:36,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:36,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:36,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:44:36,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:36,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:36,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878528550] [2020-10-15 03:44:36,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:36,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:44:36,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089146938] [2020-10-15 03:44:36,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:36,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:36,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:36,564 INFO L87 Difference]: Start difference. First operand 7052 states and 10466 transitions. Second operand 6 states. [2020-10-15 03:44:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:39,961 INFO L93 Difference]: Finished difference Result 22266 states and 33277 transitions. [2020-10-15 03:44:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:44:39,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:44:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:39,994 INFO L225 Difference]: With dead ends: 22266 [2020-10-15 03:44:39,994 INFO L226 Difference]: Without dead ends: 15546 [2020-10-15 03:44:40,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15546 states. [2020-10-15 03:44:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15546 to 12512. [2020-10-15 03:44:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12512 states. [2020-10-15 03:44:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12512 states to 12512 states and 18437 transitions. [2020-10-15 03:44:41,360 INFO L78 Accepts]: Start accepts. Automaton has 12512 states and 18437 transitions. Word has length 71 [2020-10-15 03:44:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:41,360 INFO L479 AbstractCegarLoop]: Abstraction has 12512 states and 18437 transitions. [2020-10-15 03:44:41,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12512 states and 18437 transitions. [2020-10-15 03:44:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:44:41,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:41,366 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] [2020-10-15 03:44:41,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:44:41,366 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:41,367 INFO L82 PathProgramCache]: Analyzing trace with hash -115787667, now seen corresponding path program 1 times [2020-10-15 03:44:41,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:41,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951068502] [2020-10-15 03:44:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:43,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:43,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:44:43,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-15 03:44:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:43,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:44:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:43,596 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:43,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:43,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:43,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:44:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:43,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:43,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951068502] [2020-10-15 03:44:43,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:43,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:44:43,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524545753] [2020-10-15 03:44:43,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:43,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:43,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:43,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:43,632 INFO L87 Difference]: Start difference. First operand 12512 states and 18437 transitions. Second operand 8 states. [2020-10-15 03:44:44,133 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-15 03:44:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:49,218 INFO L93 Difference]: Finished difference Result 40814 states and 60446 transitions. [2020-10-15 03:44:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:44:49,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-15 03:44:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:49,300 INFO L225 Difference]: With dead ends: 40814 [2020-10-15 03:44:49,301 INFO L226 Difference]: Without dead ends: 29256 [2020-10-15 03:44:49,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:44:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29256 states. [2020-10-15 03:44:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29256 to 12541. [2020-10-15 03:44:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12541 states. [2020-10-15 03:44:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 18455 transitions. [2020-10-15 03:44:51,223 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 18455 transitions. Word has length 72 [2020-10-15 03:44:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:51,223 INFO L479 AbstractCegarLoop]: Abstraction has 12541 states and 18455 transitions. [2020-10-15 03:44:51,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 18455 transitions. [2020-10-15 03:44:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:44:51,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:51,229 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] [2020-10-15 03:44:51,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:44:51,229 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:51,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1873806202, now seen corresponding path program 1 times [2020-10-15 03:44:51,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:51,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964940074] [2020-10-15 03:44:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3637 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:44:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:55,313 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:44:55,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:55,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:55,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:55,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:55,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:55,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964940074] [2020-10-15 03:44:55,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:55,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:44:55,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456300840] [2020-10-15 03:44:55,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:44:55,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:55,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:44:55,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:44:55,343 INFO L87 Difference]: Start difference. First operand 12541 states and 18455 transitions. Second operand 7 states. [2020-10-15 03:44:55,777 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-15 03:45:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:01,229 INFO L93 Difference]: Finished difference Result 36990 states and 54641 transitions. [2020-10-15 03:45:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:45:01,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-15 03:45:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:01,294 INFO L225 Difference]: With dead ends: 36990 [2020-10-15 03:45:01,295 INFO L226 Difference]: Without dead ends: 28050 [2020-10-15 03:45:01,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:45:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28050 states. [2020-10-15 03:45:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28050 to 12497. [2020-10-15 03:45:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12497 states. [2020-10-15 03:45:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 18390 transitions. [2020-10-15 03:45:02,862 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 18390 transitions. Word has length 72 [2020-10-15 03:45:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:02,862 INFO L479 AbstractCegarLoop]: Abstraction has 12497 states and 18390 transitions. [2020-10-15 03:45:02,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:45:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 18390 transitions. [2020-10-15 03:45:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:45:02,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:02,869 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] [2020-10-15 03:45:02,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:45:02,870 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash 926176411, now seen corresponding path program 1 times [2020-10-15 03:45:02,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:02,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208059930] [2020-10-15 03:45:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:05,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2189 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 03:45:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:05,489 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:45:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:05,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208059930] [2020-10-15 03:45:05,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:05,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:45:05,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553471732] [2020-10-15 03:45:05,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:05,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:05,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:05,521 INFO L87 Difference]: Start difference. First operand 12497 states and 18390 transitions. Second operand 6 states. [2020-10-15 03:45:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:09,353 INFO L93 Difference]: Finished difference Result 19854 states and 29108 transitions. [2020-10-15 03:45:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:45:09,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:45:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:09,375 INFO L225 Difference]: With dead ends: 19854 [2020-10-15 03:45:09,375 INFO L226 Difference]: Without dead ends: 16512 [2020-10-15 03:45:09,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16512 states. [2020-10-15 03:45:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16512 to 13698. [2020-10-15 03:45:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13698 states. [2020-10-15 03:45:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 19822 transitions. [2020-10-15 03:45:11,380 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 19822 transitions. Word has length 72 [2020-10-15 03:45:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 13698 states and 19822 transitions. [2020-10-15 03:45:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 19822 transitions. [2020-10-15 03:45:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:45:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:11,387 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] [2020-10-15 03:45:11,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:45:11,388 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2114456661, now seen corresponding path program 1 times [2020-10-15 03:45:11,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:11,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505457001] [2020-10-15 03:45:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:11,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:14,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:14,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3089 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:45:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:15,026 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:45:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:15,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:15,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:45:15,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:15,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:15,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:15,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505457001] [2020-10-15 03:45:15,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:15,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:45:15,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140670324] [2020-10-15 03:45:15,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:45:15,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:15,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:45:15,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:15,060 INFO L87 Difference]: Start difference. First operand 13698 states and 19822 transitions. Second operand 8 states. [2020-10-15 03:45:15,488 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-15 03:45:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:21,880 INFO L93 Difference]: Finished difference Result 46897 states and 68306 transitions. [2020-10-15 03:45:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:45:21,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-10-15 03:45:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:21,920 INFO L225 Difference]: With dead ends: 46897 [2020-10-15 03:45:21,920 INFO L226 Difference]: Without dead ends: 34286 [2020-10-15 03:45:21,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:45:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34286 states. [2020-10-15 03:45:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34286 to 13202. [2020-10-15 03:45:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13202 states. [2020-10-15 03:45:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13202 states to 13202 states and 19099 transitions. [2020-10-15 03:45:23,951 INFO L78 Accepts]: Start accepts. Automaton has 13202 states and 19099 transitions. Word has length 73 [2020-10-15 03:45:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:23,952 INFO L479 AbstractCegarLoop]: Abstraction has 13202 states and 19099 transitions. [2020-10-15 03:45:23,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:45:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13202 states and 19099 transitions. [2020-10-15 03:45:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:45:23,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:23,959 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] [2020-10-15 03:45:23,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:45:23,959 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:23,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1586182976, now seen corresponding path program 1 times [2020-10-15 03:45:23,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:23,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175993503] [2020-10-15 03:45:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:25,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:45:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:45:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:26,085 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:45:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:26,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175993503] [2020-10-15 03:45:26,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:26,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:45:26,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564919909] [2020-10-15 03:45:26,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:26,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:26,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:26,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:26,119 INFO L87 Difference]: Start difference. First operand 13202 states and 19099 transitions. Second operand 6 states. [2020-10-15 03:45:26,553 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-15 03:45:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:31,200 INFO L93 Difference]: Finished difference Result 31872 states and 46580 transitions. [2020-10-15 03:45:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:45:31,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:45:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:31,227 INFO L225 Difference]: With dead ends: 31872 [2020-10-15 03:45:31,228 INFO L226 Difference]: Without dead ends: 25959 [2020-10-15 03:45:31,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:45:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25959 states. [2020-10-15 03:45:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25959 to 21655. [2020-10-15 03:45:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21655 states. [2020-10-15 03:45:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21655 states to 21655 states and 31285 transitions. [2020-10-15 03:45:34,425 INFO L78 Accepts]: Start accepts. Automaton has 21655 states and 31285 transitions. Word has length 73 [2020-10-15 03:45:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:34,426 INFO L479 AbstractCegarLoop]: Abstraction has 21655 states and 31285 transitions. [2020-10-15 03:45:34,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:45:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 21655 states and 31285 transitions. [2020-10-15 03:45:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:45:34,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:34,434 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] [2020-10-15 03:45:34,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:45:34,434 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1497594354, now seen corresponding path program 1 times [2020-10-15 03:45:34,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:34,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011937901] [2020-10-15 03:45:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:45:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:35,202 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:45:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:35,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:35,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:35,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:45:35,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:35,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:35,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011937901] [2020-10-15 03:45:35,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:35,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:35,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609778489] [2020-10-15 03:45:35,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:35,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:35,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:35,243 INFO L87 Difference]: Start difference. First operand 21655 states and 31285 transitions. Second operand 4 states. [2020-10-15 03:45:35,652 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-15 03:45:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:43,095 INFO L93 Difference]: Finished difference Result 59783 states and 86001 transitions. [2020-10-15 03:45:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:43,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-15 03:45:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:43,141 INFO L225 Difference]: With dead ends: 59783 [2020-10-15 03:45:43,142 INFO L226 Difference]: Without dead ends: 39570 [2020-10-15 03:45:43,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:45:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39570 states. [2020-10-15 03:45:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39570 to 36346. [2020-10-15 03:45:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36346 states. [2020-10-15 03:45:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36346 states to 36346 states and 51901 transitions. [2020-10-15 03:45:48,514 INFO L78 Accepts]: Start accepts. Automaton has 36346 states and 51901 transitions. Word has length 73 [2020-10-15 03:45:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:48,514 INFO L479 AbstractCegarLoop]: Abstraction has 36346 states and 51901 transitions. [2020-10-15 03:45:48,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 36346 states and 51901 transitions. [2020-10-15 03:45:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:48,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:48,521 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] [2020-10-15 03:45:48,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:45:48,521 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:48,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:48,522 INFO L82 PathProgramCache]: Analyzing trace with hash 125099511, now seen corresponding path program 1 times [2020-10-15 03:45:48,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:48,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235099021] [2020-10-15 03:45:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:49,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:45:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-10-15 03:45:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:49,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:45:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:45:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:50,308 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:45:50,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:50,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:50,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:50,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:45:50,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:50,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:50,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235099021] [2020-10-15 03:45:50,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:50,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:45:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020112670] [2020-10-15 03:45:50,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:50,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:50,353 INFO L87 Difference]: Start difference. First operand 36346 states and 51901 transitions. Second operand 6 states. [2020-10-15 03:45:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:59,346 INFO L93 Difference]: Finished difference Result 61521 states and 87612 transitions. [2020-10-15 03:45:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:45:59,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-15 03:45:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:59,404 INFO L225 Difference]: With dead ends: 61521 [2020-10-15 03:45:59,404 INFO L226 Difference]: Without dead ends: 42701 [2020-10-15 03:45:59,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42701 states. [2020-10-15 03:46:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42701 to 25691. [2020-10-15 03:46:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25691 states. [2020-10-15 03:46:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25691 states to 25691 states and 36116 transitions. [2020-10-15 03:46:03,938 INFO L78 Accepts]: Start accepts. Automaton has 25691 states and 36116 transitions. Word has length 74 [2020-10-15 03:46:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:03,938 INFO L479 AbstractCegarLoop]: Abstraction has 25691 states and 36116 transitions. [2020-10-15 03:46:03,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:46:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand 25691 states and 36116 transitions. [2020-10-15 03:46:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:46:03,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:03,945 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] [2020-10-15 03:46:03,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:46:03,945 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1713416800, now seen corresponding path program 1 times [2020-10-15 03:46:03,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:03,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492583809] [2020-10-15 03:46:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:04,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:04,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:46:04,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-15 03:46:04,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:04,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:46:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:46:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:46:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:05,411 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:46:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:05,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:46:05,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492583809] [2020-10-15 03:46:05,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:05,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:46:05,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622286311] [2020-10-15 03:46:05,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:46:05,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:05,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:46:05,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:05,443 INFO L87 Difference]: Start difference. First operand 25691 states and 36116 transitions. Second operand 9 states. [2020-10-15 03:46:05,877 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-15 03:46:06,063 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-15 03:46:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:26,613 INFO L93 Difference]: Finished difference Result 107668 states and 151269 transitions. [2020-10-15 03:46:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:46:26,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-15 03:46:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:26,707 INFO L225 Difference]: With dead ends: 107668 [2020-10-15 03:46:26,707 INFO L226 Difference]: Without dead ends: 86092 [2020-10-15 03:46:26,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:46:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86092 states. [2020-10-15 03:46:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86092 to 25396. [2020-10-15 03:46:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25396 states. [2020-10-15 03:46:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25396 states to 25396 states and 35726 transitions. [2020-10-15 03:46:32,086 INFO L78 Accepts]: Start accepts. Automaton has 25396 states and 35726 transitions. Word has length 74 [2020-10-15 03:46:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:32,086 INFO L479 AbstractCegarLoop]: Abstraction has 25396 states and 35726 transitions. [2020-10-15 03:46:32,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:46:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 25396 states and 35726 transitions. [2020-10-15 03:46:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:46:32,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:32,093 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] [2020-10-15 03:46:32,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:46:32,093 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:32,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:32,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1422269741, now seen corresponding path program 1 times [2020-10-15 03:46:32,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:32,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417082406] [2020-10-15 03:46:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:35,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2957 [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:46:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:46:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:46:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:35,599 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:46:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:35,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:35,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:46:35,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:46:35,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417082406] [2020-10-15 03:46:35,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:35,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:46:35,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429869730] [2020-10-15 03:46:35,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:46:35,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:35,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:46:35,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:46:35,639 INFO L87 Difference]: Start difference. First operand 25396 states and 35726 transitions. Second operand 10 states. [2020-10-15 03:46:36,530 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 280