/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:34:07,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:34:07,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:34:07,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:34:07,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:34:07,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:34:07,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:34:07,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:34:07,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:34:07,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:34:07,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:34:07,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:34:07,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:34:07,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:34:07,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:34:07,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:34:07,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:34:07,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:34:07,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:34:07,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:34:07,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:34:07,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:34:07,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:34:07,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:34:07,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:34:07,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:34:07,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:34:07,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:34:07,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:34:07,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:34:07,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:34:07,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:34:07,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:34:07,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:34:07,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:34:07,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:34:07,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:34:07,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:34:07,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:34:07,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:34:07,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:34:07,507 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 [2020-10-14 09:34:07,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:34:07,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:34:07,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:34:07,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:34:07,531 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:34:07,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:34:07,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:34:07,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:34:07,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:34:07,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:34:07,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:34:07,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:34:07,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:34:07,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:34:07,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:34:07,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:34:07,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:34:07,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:34:07,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:34:07,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:34:07,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:34:07,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:34:07,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:34:07,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:34:07,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:34:07,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:34:07,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:34:07,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:34:07,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:34:07,536 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:34:07,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:34:07,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:34:07,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:34:07,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:34:07,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:34:07,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:34:07,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228a632c6/45cd2c6d9e254abebf1291c7435f1b77/FLAG4860fbd01 [2020-10-14 09:34:08,579 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:34:08,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:34:08,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228a632c6/45cd2c6d9e254abebf1291c7435f1b77/FLAG4860fbd01 [2020-10-14 09:34:08,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228a632c6/45cd2c6d9e254abebf1291c7435f1b77 [2020-10-14 09:34:08,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:34:08,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:34:08,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:34:08,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:34:08,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:34:08,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:34:08" (1/1) ... [2020-10-14 09:34:08,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:08, skipping insertion in model container [2020-10-14 09:34:08,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:34:08" (1/1) ... [2020-10-14 09:34:08,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:34:08,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:34:10,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:34:10,489 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:34:11,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:34:11,464 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:34:11,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11 WrapperNode [2020-10-14 09:34:11,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:34:11,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:34:11,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:34:11,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:34:11,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (1/1) ... [2020-10-14 09:34:11,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:34:11,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:34:11,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:34:11,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:34:11,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (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 [2020-10-14 09:34:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:34:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:34:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:34:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:34:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:34:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:34:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:34:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:34:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:34:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:34:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:34:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:34:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:34:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:34:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:34:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:34:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:34:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:34:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:34:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:34:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:34:14,937 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:34:14,937 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:34:14,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:34:14 BoogieIcfgContainer [2020-10-14 09:34:14,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:34:14,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:34:14,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:34:14,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:34:14,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:34:08" (1/3) ... [2020-10-14 09:34:14,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11189f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:34:14, skipping insertion in model container [2020-10-14 09:34:14,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:34:11" (2/3) ... [2020-10-14 09:34:14,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11189f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:34:14, skipping insertion in model container [2020-10-14 09:34:14,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:34:14" (3/3) ... [2020-10-14 09:34:14,965 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 09:34:14,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:34:14,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-14 09:34:15,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-14 09:34:15,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:34:15,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:34:15,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:34:15,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:34:15,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:34:15,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:34:15,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:34:15,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:34:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states. [2020-10-14 09:34:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 09:34:15,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:15,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:15,126 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash -330341000, now seen corresponding path program 1 times [2020-10-14 09:34:15,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:15,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737668999] [2020-10-14 09:34:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:20,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 09:34:20,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:34:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:34:20,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:20,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 09:34:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 09:34:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:34:21,963 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:34:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:21,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:34:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:22,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:34:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:22,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737668999] [2020-10-14 09:34:22,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:22,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:22,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71411232] [2020-10-14 09:34:22,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:22,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:22,312 INFO L87 Difference]: Start difference. First operand 973 states. Second operand 4 states. [2020-10-14 09:34:22,918 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2020-10-14 09:34:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:30,405 INFO L93 Difference]: Finished difference Result 1688 states and 2997 transitions. [2020-10-14 09:34:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:30,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-14 09:34:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:30,440 INFO L225 Difference]: With dead ends: 1688 [2020-10-14 09:34:30,440 INFO L226 Difference]: Without dead ends: 1396 [2020-10-14 09:34:30,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-10-14 09:34:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1394. [2020-10-14 09:34:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2020-10-14 09:34:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2142 transitions. [2020-10-14 09:34:30,579 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2142 transitions. Word has length 314 [2020-10-14 09:34:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:30,581 INFO L479 AbstractCegarLoop]: Abstraction has 1394 states and 2142 transitions. [2020-10-14 09:34:30,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2142 transitions. [2020-10-14 09:34:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 09:34:30,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:30,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:30,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:34:30,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:30,595 INFO L82 PathProgramCache]: Analyzing trace with hash -790230574, now seen corresponding path program 1 times [2020-10-14 09:34:30,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:30,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199862278] [2020-10-14 09:34:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:35,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 09:34:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:34:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:34:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:35,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 09:34:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-14 09:34:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:34:36,965 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:34:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:37,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:37,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:37,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:34:37,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:37,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:34:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:37,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199862278] [2020-10-14 09:34:37,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:37,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:37,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818455579] [2020-10-14 09:34:37,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:37,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:37,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:37,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:37,260 INFO L87 Difference]: Start difference. First operand 1394 states and 2142 transitions. Second operand 4 states. [2020-10-14 09:34:37,865 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2020-10-14 09:34:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:44,584 INFO L93 Difference]: Finished difference Result 2687 states and 4182 transitions. [2020-10-14 09:34:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:44,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-14 09:34:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:44,599 INFO L225 Difference]: With dead ends: 2687 [2020-10-14 09:34:44,599 INFO L226 Difference]: Without dead ends: 2332 [2020-10-14 09:34:44,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2020-10-14 09:34:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2330. [2020-10-14 09:34:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2020-10-14 09:34:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3606 transitions. [2020-10-14 09:34:44,712 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3606 transitions. Word has length 314 [2020-10-14 09:34:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:44,714 INFO L479 AbstractCegarLoop]: Abstraction has 2330 states and 3606 transitions. [2020-10-14 09:34:44,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3606 transitions. [2020-10-14 09:34:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 09:34:44,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:44,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:44,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:34:44,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:44,727 INFO L82 PathProgramCache]: Analyzing trace with hash -790569198, now seen corresponding path program 1 times [2020-10-14 09:34:44,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:44,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233201231] [2020-10-14 09:34:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:47,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:50,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:50,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 09:34:50,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:34:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 09:34:50,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:50,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:34:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:34:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 09:34:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:34:50,732 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:34:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:50,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:34:50,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:50,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:34:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:50,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233201231] [2020-10-14 09:34:50,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:50,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:34:50,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669428002] [2020-10-14 09:34:50,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:34:50,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:50,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:34:50,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:51,000 INFO L87 Difference]: Start difference. First operand 2330 states and 3606 transitions. Second operand 5 states. [2020-10-14 09:34:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:59,828 INFO L93 Difference]: Finished difference Result 6900 states and 10669 transitions. [2020-10-14 09:34:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:59,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-14 09:34:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:59,851 INFO L225 Difference]: With dead ends: 6900 [2020-10-14 09:34:59,851 INFO L226 Difference]: Without dead ends: 4583 [2020-10-14 09:34:59,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:34:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2020-10-14 09:35:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 4434. [2020-10-14 09:35:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-10-14 09:35:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6850 transitions. [2020-10-14 09:35:00,020 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6850 transitions. Word has length 314 [2020-10-14 09:35:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:00,020 INFO L479 AbstractCegarLoop]: Abstraction has 4434 states and 6850 transitions. [2020-10-14 09:35:00,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:35:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6850 transitions. [2020-10-14 09:35:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 09:35:00,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:00,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:00,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:35:00,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash -725173109, now seen corresponding path program 1 times [2020-10-14 09:35:00,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:00,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223291018] [2020-10-14 09:35:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:00,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:01,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:01,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:05,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:05,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 09:35:05,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:35:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:35:05,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:05,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:35:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 09:35:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:05,833 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:35:05,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:05,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:05,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:05,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:05,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:35:05,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:05,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:05,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:35:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:06,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223291018] [2020-10-14 09:35:06,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:06,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:06,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461147344] [2020-10-14 09:35:06,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:06,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:06,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:06,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:06,084 INFO L87 Difference]: Start difference. First operand 4434 states and 6850 transitions. Second operand 4 states. [2020-10-14 09:35:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:15,978 INFO L93 Difference]: Finished difference Result 12972 states and 19985 transitions. [2020-10-14 09:35:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:35:15,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-10-14 09:35:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:16,020 INFO L225 Difference]: With dead ends: 12972 [2020-10-14 09:35:16,021 INFO L226 Difference]: Without dead ends: 8678 [2020-10-14 09:35:16,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8678 states. [2020-10-14 09:35:16,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8678 to 8533. [2020-10-14 09:35:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-14 09:35:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 13126 transitions. [2020-10-14 09:35:16,336 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 13126 transitions. Word has length 316 [2020-10-14 09:35:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:16,337 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 13126 transitions. [2020-10-14 09:35:16,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 13126 transitions. [2020-10-14 09:35:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 09:35:16,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:16,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:16,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:35:16,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:16,356 INFO L82 PathProgramCache]: Analyzing trace with hash 980838288, now seen corresponding path program 1 times [2020-10-14 09:35:16,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:16,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251127237] [2020-10-14 09:35:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 09:35:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:35:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-14 09:35:21,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:21,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:35:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:35:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:22,070 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:35:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:22,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:35:22,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:22,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:22,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251127237] [2020-10-14 09:35:22,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:22,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:22,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175484011] [2020-10-14 09:35:22,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:22,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:22,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:22,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:22,172 INFO L87 Difference]: Start difference. First operand 8533 states and 13126 transitions. Second operand 4 states. [2020-10-14 09:35:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:27,686 INFO L93 Difference]: Finished difference Result 25440 states and 39102 transitions. [2020-10-14 09:35:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:35:27,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-10-14 09:35:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:27,746 INFO L225 Difference]: With dead ends: 25440 [2020-10-14 09:35:27,747 INFO L226 Difference]: Without dead ends: 16934 [2020-10-14 09:35:27,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16934 states. [2020-10-14 09:35:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16934 to 8544. [2020-10-14 09:35:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8544 states. [2020-10-14 09:35:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8544 states to 8544 states and 13141 transitions. [2020-10-14 09:35:28,154 INFO L78 Accepts]: Start accepts. Automaton has 8544 states and 13141 transitions. Word has length 316 [2020-10-14 09:35:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:28,154 INFO L479 AbstractCegarLoop]: Abstraction has 8544 states and 13141 transitions. [2020-10-14 09:35:28,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 8544 states and 13141 transitions. [2020-10-14 09:35:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 09:35:28,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:28,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:28,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:35:28,174 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:28,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1251035499, now seen corresponding path program 1 times [2020-10-14 09:35:28,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:28,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868273968] [2020-10-14 09:35:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:33,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:33,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 09:35:33,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:35:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:35:33,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:33,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:35:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:35:33,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:34,078 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:35:34,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:34,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:35:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:34,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868273968] [2020-10-14 09:35:34,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:34,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:34,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101149584] [2020-10-14 09:35:34,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:34,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:34,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:34,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:34,214 INFO L87 Difference]: Start difference. First operand 8544 states and 13141 transitions. Second operand 4 states. [2020-10-14 09:35:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:44,804 INFO L93 Difference]: Finished difference Result 25537 states and 39269 transitions. [2020-10-14 09:35:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:35:44,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-14 09:35:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:44,841 INFO L225 Difference]: With dead ends: 25537 [2020-10-14 09:35:44,841 INFO L226 Difference]: Without dead ends: 17043 [2020-10-14 09:35:44,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17043 states. [2020-10-14 09:35:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17043 to 8560. [2020-10-14 09:35:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-14 09:35:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 13160 transitions. [2020-10-14 09:35:45,254 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 13160 transitions. Word has length 317 [2020-10-14 09:35:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:45,254 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 13160 transitions. [2020-10-14 09:35:45,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 13160 transitions. [2020-10-14 09:35:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 09:35:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:45,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:45,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:35:45,272 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:45,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1328204378, now seen corresponding path program 1 times [2020-10-14 09:35:45,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:45,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921675449] [2020-10-14 09:35:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:45,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:48,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:50,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:50,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 09:35:50,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:35:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 09:35:50,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:50,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:35:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 09:35:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:51,069 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:35:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:51,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:51,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:51,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:35:51,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:51,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:51,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921675449] [2020-10-14 09:35:51,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:51,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:51,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398274553] [2020-10-14 09:35:51,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:51,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:51,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:51,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:51,238 INFO L87 Difference]: Start difference. First operand 8560 states and 13160 transitions. Second operand 4 states. [2020-10-14 09:36:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:02,188 INFO L93 Difference]: Finished difference Result 25077 states and 38473 transitions. [2020-10-14 09:36:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:36:02,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-10-14 09:36:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:02,226 INFO L225 Difference]: With dead ends: 25077 [2020-10-14 09:36:02,227 INFO L226 Difference]: Without dead ends: 16714 [2020-10-14 09:36:02,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16714 states. [2020-10-14 09:36:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16714 to 16573. [2020-10-14 09:36:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16573 states. [2020-10-14 09:36:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16573 states to 16573 states and 25336 transitions. [2020-10-14 09:36:02,829 INFO L78 Accepts]: Start accepts. Automaton has 16573 states and 25336 transitions. Word has length 318 [2020-10-14 09:36:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:02,830 INFO L479 AbstractCegarLoop]: Abstraction has 16573 states and 25336 transitions. [2020-10-14 09:36:02,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 16573 states and 25336 transitions. [2020-10-14 09:36:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 09:36:02,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:02,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:02,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:36:02,853 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:02,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2035058691, now seen corresponding path program 1 times [2020-10-14 09:36:02,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:02,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757249548] [2020-10-14 09:36:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:07,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 09:36:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:36:07,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:36:07,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:07,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:36:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:36:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 09:36:07,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:08,727 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:36:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:08,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:36:08,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:08,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:08,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757249548] [2020-10-14 09:36:08,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:08,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:36:08,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79944931] [2020-10-14 09:36:08,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:36:08,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:08,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:36:08,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:08,921 INFO L87 Difference]: Start difference. First operand 16573 states and 25336 transitions. Second operand 5 states. [2020-10-14 09:36:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:20,002 INFO L93 Difference]: Finished difference Result 48712 states and 74289 transitions. [2020-10-14 09:36:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:20,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-14 09:36:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:20,063 INFO L225 Difference]: With dead ends: 48712 [2020-10-14 09:36:20,063 INFO L226 Difference]: Without dead ends: 32413 [2020-10-14 09:36:20,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:36:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32413 states. [2020-10-14 09:36:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32413 to 32214. [2020-10-14 09:36:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32214 states. [2020-10-14 09:36:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32214 states to 32214 states and 48939 transitions. [2020-10-14 09:36:21,273 INFO L78 Accepts]: Start accepts. Automaton has 32214 states and 48939 transitions. Word has length 318 [2020-10-14 09:36:21,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:21,274 INFO L479 AbstractCegarLoop]: Abstraction has 32214 states and 48939 transitions. [2020-10-14 09:36:21,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:36:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 32214 states and 48939 transitions. [2020-10-14 09:36:21,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-14 09:36:21,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:21,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:21,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:36:21,306 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:21,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:21,307 INFO L82 PathProgramCache]: Analyzing trace with hash 488146700, now seen corresponding path program 1 times [2020-10-14 09:36:21,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:21,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921341681] [2020-10-14 09:36:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:24,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:26,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:26,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 09:36:26,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 09:36:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:27,136 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:36:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:27,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:27,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:36:27,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:27,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:27,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921341681] [2020-10-14 09:36:27,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:27,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:36:27,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027731227] [2020-10-14 09:36:27,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:36:27,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:27,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:36:27,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:27,350 INFO L87 Difference]: Start difference. First operand 32214 states and 48939 transitions. Second operand 5 states. [2020-10-14 09:36:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:40,730 INFO L93 Difference]: Finished difference Result 94882 states and 143855 transitions. [2020-10-14 09:36:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:40,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-14 09:36:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:40,825 INFO L225 Difference]: With dead ends: 94882 [2020-10-14 09:36:40,825 INFO L226 Difference]: Without dead ends: 62987 [2020-10-14 09:36:40,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:36:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2020-10-14 09:36:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 62788. [2020-10-14 09:36:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62788 states. [2020-10-14 09:36:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62788 states to 62788 states and 94723 transitions. [2020-10-14 09:36:45,435 INFO L78 Accepts]: Start accepts. Automaton has 62788 states and 94723 transitions. Word has length 320 [2020-10-14 09:36:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:45,435 INFO L479 AbstractCegarLoop]: Abstraction has 62788 states and 94723 transitions. [2020-10-14 09:36:45,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:36:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 62788 states and 94723 transitions. [2020-10-14 09:36:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 09:36:45,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:45,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:45,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:36:45,481 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:45,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash 481705343, now seen corresponding path program 1 times [2020-10-14 09:36:45,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:45,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593534408] [2020-10-14 09:36:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:45,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:50,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 09:36:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:51,357 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:36:51,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:51,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:51,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:51,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:36:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:51,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:51,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593534408] [2020-10-14 09:36:51,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:51,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:51,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617072299] [2020-10-14 09:36:51,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:51,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:51,754 INFO L87 Difference]: Start difference. First operand 62788 states and 94723 transitions. Second operand 4 states. [2020-10-14 09:37:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:08,161 INFO L93 Difference]: Finished difference Result 184681 states and 277935 transitions. [2020-10-14 09:37:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:08,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-14 09:37:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:08,365 INFO L225 Difference]: With dead ends: 184681 [2020-10-14 09:37:08,365 INFO L226 Difference]: Without dead ends: 122850 [2020-10-14 09:37:08,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122850 states. [2020-10-14 09:37:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122850 to 122651. [2020-10-14 09:37:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122651 states. [2020-10-14 09:37:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122651 states to 122651 states and 183681 transitions. [2020-10-14 09:37:16,379 INFO L78 Accepts]: Start accepts. Automaton has 122651 states and 183681 transitions. Word has length 322 [2020-10-14 09:37:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:16,379 INFO L479 AbstractCegarLoop]: Abstraction has 122651 states and 183681 transitions. [2020-10-14 09:37:16,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 122651 states and 183681 transitions. [2020-10-14 09:37:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 09:37:16,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:16,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:16,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:37:16,484 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash -971623676, now seen corresponding path program 1 times [2020-10-14 09:37:16,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:16,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131619126] [2020-10-14 09:37:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:16,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:21,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 09:37:21,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:37:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:37:21,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:21,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:37:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:37:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:22,107 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:37:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:22,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:22,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:22,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:22,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131619126] [2020-10-14 09:37:22,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:22,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:22,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764848356] [2020-10-14 09:37:22,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:22,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:22,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:22,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:22,190 INFO L87 Difference]: Start difference. First operand 122651 states and 183681 transitions. Second operand 4 states. [2020-10-14 09:37:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:45,994 INFO L93 Difference]: Finished difference Result 366915 states and 549229 transitions. [2020-10-14 09:37:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:45,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-14 09:37:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:46,262 INFO L225 Difference]: With dead ends: 366915 [2020-10-14 09:37:46,262 INFO L226 Difference]: Without dead ends: 244841 [2020-10-14 09:37:46,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244841 states.