/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=NARROWEST --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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:54:33,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:54:33,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:54:33,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:54:33,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:54:33,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:54:33,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:54:33,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:54:33,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:54:33,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:54:33,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:54:33,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:54:33,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:54:33,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:54:33,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:54:33,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:54:33,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:54:33,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:54:33,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:54:33,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:54:33,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:54:33,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:54:33,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:54:33,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:54:33,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:54:33,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:54:33,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:54:33,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:54:33,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:54:33,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:54:33,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:54:33,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:54:33,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:54:33,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:54:33,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:54:33,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:54:33,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:54:33,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:54:33,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:54:33,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:54:33,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:54:33,543 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 [2020-10-13 14:54:33,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:54:33,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:54:33,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:54:33,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:54:33,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:54:33,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:54:33,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:54:33,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:54:33,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:54:33,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:54:33,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:54:33,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:54:33,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:54:33,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:54:33,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:54:33,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:54:33,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:54:33,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:54:33,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:54:33,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:54:33,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:54:33,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:54:33,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:54:33,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:54:33,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:54:33,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:54:33,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:54:33,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:54:33,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:54:33,587 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:54:33,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:54:33,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:54:33,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:54:33,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:54:33,909 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:54:33,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:54:33,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/285760d35/12a96822ae654a0eb710bd6366963a9e/FLAGc9a8752a8 [2020-10-13 14:54:34,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:54:34,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:54:34,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/285760d35/12a96822ae654a0eb710bd6366963a9e/FLAGc9a8752a8 [2020-10-13 14:54:34,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/285760d35/12a96822ae654a0eb710bd6366963a9e [2020-10-13 14:54:34,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:54:34,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:54:34,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:54:34,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:54:34,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:54:34,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:54:34" (1/1) ... [2020-10-13 14:54:34,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@965685d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:34, skipping insertion in model container [2020-10-13 14:54:34,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:54:34" (1/1) ... [2020-10-13 14:54:34,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:54:34,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:54:35,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:54:35,550 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:54:36,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:54:36,034 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:54:36,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36 WrapperNode [2020-10-13 14:54:36,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:54:36,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:54:36,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:54:36,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:54:36,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (1/1) ... [2020-10-13 14:54:36,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:54:36,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:54:36,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:54:36,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:54:36,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (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 [2020-10-13 14:54:36,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:54:36,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:54:36,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:54:36,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:54:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:54:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:54:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:54:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:54:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:54:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:54:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:54:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:54:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:54:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:54:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:54:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:54:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:54:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:54:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:54:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:54:37,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:54:37,624 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:54:37,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:54:37 BoogieIcfgContainer [2020-10-13 14:54:37,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:54:37,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:54:37,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:54:37,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:54:37,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:54:34" (1/3) ... [2020-10-13 14:54:37,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdec7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:54:37, skipping insertion in model container [2020-10-13 14:54:37,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:54:36" (2/3) ... [2020-10-13 14:54:37,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdec7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:54:37, skipping insertion in model container [2020-10-13 14:54:37,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:54:37" (3/3) ... [2020-10-13 14:54:37,641 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:54:37,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:54:37,660 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 14:54:37,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 14:54:37,739 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:54:37,739 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:54:37,740 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:54:37,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:54:37,740 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:54:37,740 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:54:37,740 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:54:37,740 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:54:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-10-13 14:54:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 14:54:37,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:37,795 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] [2020-10-13 14:54:37,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:37,800 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-10-13 14:54:37,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:37,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526686457] [2020-10-13 14:54:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:43,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:43,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 14:54:43,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:54:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:54:43,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:54:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:54:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:54:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:54:43,750 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:54:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:54:43,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:54:43,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526686457] [2020-10-13 14:54:43,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:43,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:54:43,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421235241] [2020-10-13 14:54:43,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:54:43,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:54:43,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:54:43,867 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 5 states. [2020-10-13 14:54:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:48,041 INFO L93 Difference]: Finished difference Result 1194 states and 2119 transitions. [2020-10-13 14:54:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:54:48,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 14:54:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:48,067 INFO L225 Difference]: With dead ends: 1194 [2020-10-13 14:54:48,067 INFO L226 Difference]: Without dead ends: 787 [2020-10-13 14:54:48,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:54:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-13 14:54:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 761. [2020-10-13 14:54:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-13 14:54:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1097 transitions. [2020-10-13 14:54:48,178 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1097 transitions. Word has length 146 [2020-10-13 14:54:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:48,179 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 1097 transitions. [2020-10-13 14:54:48,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:54:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1097 transitions. [2020-10-13 14:54:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 14:54:48,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:48,185 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] [2020-10-13 14:54:48,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:54:48,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash -671602716, now seen corresponding path program 1 times [2020-10-13 14:54:48,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:48,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266730083] [2020-10-13 14:54:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:53,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:53,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 14:54:53,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:54:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:54:53,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:54:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:54:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:54:53,567 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:54:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:53,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:53,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:53,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:53,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:54:53,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:54:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:54:53,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266730083] [2020-10-13 14:54:53,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:53,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:53,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412608989] [2020-10-13 14:54:53,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:53,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:53,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:53,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:53,628 INFO L87 Difference]: Start difference. First operand 761 states and 1097 transitions. Second operand 4 states. [2020-10-13 14:54:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:56,047 INFO L93 Difference]: Finished difference Result 2237 states and 3221 transitions. [2020-10-13 14:54:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:54:56,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-13 14:54:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:56,058 INFO L225 Difference]: With dead ends: 2237 [2020-10-13 14:54:56,058 INFO L226 Difference]: Without dead ends: 1508 [2020-10-13 14:54:56,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2020-10-13 14:54:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 763. [2020-10-13 14:54:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-13 14:54:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1099 transitions. [2020-10-13 14:54:56,132 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1099 transitions. Word has length 147 [2020-10-13 14:54:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:56,135 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1099 transitions. [2020-10-13 14:54:56,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1099 transitions. [2020-10-13 14:54:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 14:54:56,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:56,140 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] [2020-10-13 14:54:56,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:54:56,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1398980931, now seen corresponding path program 1 times [2020-10-13 14:54:56,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:56,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902263810] [2020-10-13 14:54:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:01,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:01,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 14:55:01,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:55:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:55:01,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:55:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:55:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:01,623 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:01,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:01,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:01,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:55:01,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:55:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:01,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902263810] [2020-10-13 14:55:01,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:01,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:01,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589702406] [2020-10-13 14:55:01,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:55:01,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:55:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:01,731 INFO L87 Difference]: Start difference. First operand 763 states and 1099 transitions. Second operand 5 states. [2020-10-13 14:55:05,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:05,348 INFO L93 Difference]: Finished difference Result 2183 states and 3127 transitions. [2020-10-13 14:55:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:55:05,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 14:55:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:05,360 INFO L225 Difference]: With dead ends: 2183 [2020-10-13 14:55:05,361 INFO L226 Difference]: Without dead ends: 1462 [2020-10-13 14:55:05,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:55:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2020-10-13 14:55:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1436. [2020-10-13 14:55:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-13 14:55:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2055 transitions. [2020-10-13 14:55:05,496 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2055 transitions. Word has length 148 [2020-10-13 14:55:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:05,497 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2055 transitions. [2020-10-13 14:55:05,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:55:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2055 transitions. [2020-10-13 14:55:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 14:55:05,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:05,503 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] [2020-10-13 14:55:05,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:55:05,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:05,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:05,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2080479803, now seen corresponding path program 1 times [2020-10-13 14:55:05,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:05,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517457920] [2020-10-13 14:55:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:05,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 14:55:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:55:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 14:55:10,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:55:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:55:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:55:10,933 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:10,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:10,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:10,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:10,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:55:10,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:11,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517457920] [2020-10-13 14:55:11,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:11,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:55:11,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658670625] [2020-10-13 14:55:11,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:55:11,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:11,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:55:11,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:11,010 INFO L87 Difference]: Start difference. First operand 1436 states and 2055 transitions. Second operand 4 states. [2020-10-13 14:55:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:14,774 INFO L93 Difference]: Finished difference Result 4224 states and 6033 transitions. [2020-10-13 14:55:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:55:14,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-13 14:55:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:14,790 INFO L225 Difference]: With dead ends: 4224 [2020-10-13 14:55:14,790 INFO L226 Difference]: Without dead ends: 2836 [2020-10-13 14:55:14,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2020-10-13 14:55:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1440. [2020-10-13 14:55:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-10-13 14:55:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2059 transitions. [2020-10-13 14:55:14,892 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2059 transitions. Word has length 149 [2020-10-13 14:55:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:14,894 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 2059 transitions. [2020-10-13 14:55:14,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2059 transitions. [2020-10-13 14:55:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 14:55:14,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:14,897 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] [2020-10-13 14:55:14,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:55:14,898 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:14,898 INFO L82 PathProgramCache]: Analyzing trace with hash -547894751, now seen corresponding path program 1 times [2020-10-13 14:55:14,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:14,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595445994] [2020-10-13 14:55:14,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:55:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:20,240 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:20,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:20,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:55:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 14:55:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:20,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595445994] [2020-10-13 14:55:20,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:20,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:55:20,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114105376] [2020-10-13 14:55:20,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:55:20,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:55:20,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:20,308 INFO L87 Difference]: Start difference. First operand 1440 states and 2059 transitions. Second operand 4 states. [2020-10-13 14:55:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:23,467 INFO L93 Difference]: Finished difference Result 3896 states and 5581 transitions. [2020-10-13 14:55:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:55:23,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-13 14:55:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:23,482 INFO L225 Difference]: With dead ends: 3896 [2020-10-13 14:55:23,482 INFO L226 Difference]: Without dead ends: 2772 [2020-10-13 14:55:23,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-10-13 14:55:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2746. [2020-10-13 14:55:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2746 states. [2020-10-13 14:55:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3895 transitions. [2020-10-13 14:55:23,623 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3895 transitions. Word has length 150 [2020-10-13 14:55:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:23,624 INFO L479 AbstractCegarLoop]: Abstraction has 2746 states and 3895 transitions. [2020-10-13 14:55:23,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3895 transitions. [2020-10-13 14:55:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 14:55:23,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:23,629 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] [2020-10-13 14:55:23,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:55:23,630 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:23,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2068545346, now seen corresponding path program 1 times [2020-10-13 14:55:23,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:23,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80422111] [2020-10-13 14:55:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:55:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:28,973 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:28,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:28,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:28,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:28,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:28,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:55:28,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:29,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80422111] [2020-10-13 14:55:29,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:29,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:29,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252555062] [2020-10-13 14:55:29,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:55:29,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:29,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:55:29,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:29,024 INFO L87 Difference]: Start difference. First operand 2746 states and 3895 transitions. Second operand 5 states. [2020-10-13 14:55:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:31,108 INFO L93 Difference]: Finished difference Result 5898 states and 8263 transitions. [2020-10-13 14:55:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:55:31,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 14:55:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:31,123 INFO L225 Difference]: With dead ends: 5898 [2020-10-13 14:55:31,123 INFO L226 Difference]: Without dead ends: 3008 [2020-10-13 14:55:31,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:55:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-10-13 14:55:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2982. [2020-10-13 14:55:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2982 states. [2020-10-13 14:55:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4153 transitions. [2020-10-13 14:55:31,299 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4153 transitions. Word has length 150 [2020-10-13 14:55:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:31,300 INFO L479 AbstractCegarLoop]: Abstraction has 2982 states and 4153 transitions. [2020-10-13 14:55:31,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:55:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4153 transitions. [2020-10-13 14:55:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 14:55:31,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:31,306 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] [2020-10-13 14:55:31,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:55:31,307 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash 439275198, now seen corresponding path program 1 times [2020-10-13 14:55:31,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:31,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759569575] [2020-10-13 14:55:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:34,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2670 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:55:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:34,353 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:34,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:55:34,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:34,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759569575] [2020-10-13 14:55:34,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:34,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:34,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241376609] [2020-10-13 14:55:34,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:55:34,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:34,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:55:34,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:34,421 INFO L87 Difference]: Start difference. First operand 2982 states and 4153 transitions. Second operand 5 states. [2020-10-13 14:55:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:37,860 INFO L93 Difference]: Finished difference Result 4300 states and 5975 transitions. [2020-10-13 14:55:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:55:37,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 14:55:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:37,874 INFO L225 Difference]: With dead ends: 4300 [2020-10-13 14:55:37,874 INFO L226 Difference]: Without dead ends: 3008 [2020-10-13 14:55:37,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:55:37,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-10-13 14:55:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2746. [2020-10-13 14:55:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2746 states. [2020-10-13 14:55:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3855 transitions. [2020-10-13 14:55:38,034 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3855 transitions. Word has length 150 [2020-10-13 14:55:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:38,035 INFO L479 AbstractCegarLoop]: Abstraction has 2746 states and 3855 transitions. [2020-10-13 14:55:38,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:55:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3855 transitions. [2020-10-13 14:55:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 14:55:38,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:38,040 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] [2020-10-13 14:55:38,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:55:38,041 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash 742137382, now seen corresponding path program 1 times [2020-10-13 14:55:38,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:38,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754815946] [2020-10-13 14:55:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:43,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:43,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 14:55:43,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:55:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:55:43,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:55:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:55:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:55:43,362 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:55:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:43,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754815946] [2020-10-13 14:55:43,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:43,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:55:43,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635495153] [2020-10-13 14:55:43,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:55:43,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:43,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:55:43,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:43,411 INFO L87 Difference]: Start difference. First operand 2746 states and 3855 transitions. Second operand 4 states. [2020-10-13 14:55:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:46,690 INFO L93 Difference]: Finished difference Result 6676 states and 9349 transitions. [2020-10-13 14:55:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:55:46,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-13 14:55:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:46,713 INFO L225 Difference]: With dead ends: 6676 [2020-10-13 14:55:46,714 INFO L226 Difference]: Without dead ends: 5384 [2020-10-13 14:55:46,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2020-10-13 14:55:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 2754. [2020-10-13 14:55:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2020-10-13 14:55:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3863 transitions. [2020-10-13 14:55:46,953 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3863 transitions. Word has length 151 [2020-10-13 14:55:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:46,955 INFO L479 AbstractCegarLoop]: Abstraction has 2754 states and 3863 transitions. [2020-10-13 14:55:46,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3863 transitions. [2020-10-13 14:55:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:55:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:46,963 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] [2020-10-13 14:55:46,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:55:46,964 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash 740443491, now seen corresponding path program 1 times [2020-10-13 14:55:46,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:46,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287821472] [2020-10-13 14:55:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:52,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:52,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:55:52,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:55:52,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 14:55:52,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:55:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:55:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:52,328 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:52,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:52,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:55:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:52,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:52,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287821472] [2020-10-13 14:55:52,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:52,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:52,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426802634] [2020-10-13 14:55:52,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:55:52,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:52,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:55:52,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:52,389 INFO L87 Difference]: Start difference. First operand 2754 states and 3863 transitions. Second operand 5 states. [2020-10-13 14:55:55,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:55,569 INFO L93 Difference]: Finished difference Result 7967 states and 11117 transitions. [2020-10-13 14:55:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:55:55,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 14:55:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:55,591 INFO L225 Difference]: With dead ends: 7967 [2020-10-13 14:55:55,592 INFO L226 Difference]: Without dead ends: 5260 [2020-10-13 14:55:55,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:55:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2020-10-13 14:55:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5239. [2020-10-13 14:55:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2020-10-13 14:55:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 7237 transitions. [2020-10-13 14:55:55,986 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 7237 transitions. Word has length 152 [2020-10-13 14:55:55,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:55,986 INFO L479 AbstractCegarLoop]: Abstraction has 5239 states and 7237 transitions. [2020-10-13 14:55:55,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:55:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 7237 transitions. [2020-10-13 14:55:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:55:55,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:55,995 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] [2020-10-13 14:55:55,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:55:55,995 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1279333219, now seen corresponding path program 1 times [2020-10-13 14:55:55,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:55,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725149074] [2020-10-13 14:55:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:57,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:57,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:55:57,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:55:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1844 [2020-10-13 14:55:57,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:55:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 14:55:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:58,176 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:55:58,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:58,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:58,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:58,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:55:58,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:58,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725149074] [2020-10-13 14:55:58,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:58,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:58,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149998020] [2020-10-13 14:55:58,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:55:58,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:55:58,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:58,218 INFO L87 Difference]: Start difference. First operand 5239 states and 7237 transitions. Second operand 5 states. [2020-10-13 14:56:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:01,596 INFO L93 Difference]: Finished difference Result 15214 states and 20924 transitions. [2020-10-13 14:56:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:56:01,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 14:56:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:01,617 INFO L225 Difference]: With dead ends: 15214 [2020-10-13 14:56:01,617 INFO L226 Difference]: Without dead ends: 10096 [2020-10-13 14:56:01,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:56:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10096 states. [2020-10-13 14:56:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10096 to 10066. [2020-10-13 14:56:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10066 states. [2020-10-13 14:56:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 13696 transitions. [2020-10-13 14:56:02,083 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 13696 transitions. Word has length 152 [2020-10-13 14:56:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:02,083 INFO L479 AbstractCegarLoop]: Abstraction has 10066 states and 13696 transitions. [2020-10-13 14:56:02,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:56:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 13696 transitions. [2020-10-13 14:56:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:56:02,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:02,099 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] [2020-10-13 14:56:02,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:56:02,100 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash 287863615, now seen corresponding path program 1 times [2020-10-13 14:56:02,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:02,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140404461] [2020-10-13 14:56:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:02,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:56:02,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-13 14:56:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:56:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 14:56:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:56:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:02,711 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:56:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:56:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:02,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:02,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:56:02,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:56:02,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:56:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:56:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:56:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:56:02,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140404461] [2020-10-13 14:56:02,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:56:02,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:56:02,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092707306] [2020-10-13 14:56:02,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:56:02,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:56:02,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:56:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:56:02,770 INFO L87 Difference]: Start difference. First operand 10066 states and 13696 transitions. Second operand 4 states. [2020-10-13 14:56:03,024 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:56:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:05,554 INFO L93 Difference]: Finished difference Result 17426 states and 24589 transitions. [2020-10-13 14:56:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:56:05,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-13 14:56:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:05,587 INFO L225 Difference]: With dead ends: 17426 [2020-10-13 14:56:05,587 INFO L226 Difference]: Without dead ends: 13388 [2020-10-13 14:56:05,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:56:05,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2020-10-13 14:56:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 13386. [2020-10-13 14:56:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13386 states. [2020-10-13 14:56:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13386 states to 13386 states and 18440 transitions. [2020-10-13 14:56:06,434 INFO L78 Accepts]: Start accepts. Automaton has 13386 states and 18440 transitions. Word has length 152 [2020-10-13 14:56:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:06,435 INFO L479 AbstractCegarLoop]: Abstraction has 13386 states and 18440 transitions. [2020-10-13 14:56:06,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:56:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13386 states and 18440 transitions. [2020-10-13 14:56:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:56:06,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:06,452 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] [2020-10-13 14:56:06,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:56:06,453 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 378270815, now seen corresponding path program 1 times [2020-10-13 14:56:06,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:06,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639577755] [2020-10-13 14:56:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:06,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:56:06,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 14:56:06,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:56:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 14:56:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 14:56:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:06,894 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:56:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:56:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:06,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:56:06,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:56:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:56:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:56:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:56:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:56:06,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639577755] [2020-10-13 14:56:06,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:56:06,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:56:06,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662416127] [2020-10-13 14:56:06,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:56:06,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:56:06,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:56:06,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:56:06,949 INFO L87 Difference]: Start difference. First operand 13386 states and 18440 transitions. Second operand 4 states. [2020-10-13 14:56:07,212 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:56:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:10,221 INFO L93 Difference]: Finished difference Result 25019 states and 35726 transitions. [2020-10-13 14:56:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:56:10,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-13 14:56:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:10,248 INFO L225 Difference]: With dead ends: 25019 [2020-10-13 14:56:10,248 INFO L226 Difference]: Without dead ends: 19617 [2020-10-13 14:56:10,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:56:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19617 states. [2020-10-13 14:56:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19617 to 19525. [2020-10-13 14:56:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19525 states. [2020-10-13 14:56:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19525 states to 19525 states and 27165 transitions. [2020-10-13 14:56:11,251 INFO L78 Accepts]: Start accepts. Automaton has 19525 states and 27165 transitions. Word has length 152 [2020-10-13 14:56:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:11,251 INFO L479 AbstractCegarLoop]: Abstraction has 19525 states and 27165 transitions. [2020-10-13 14:56:11,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:56:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 19525 states and 27165 transitions. [2020-10-13 14:56:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:56:11,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:11,267 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] [2020-10-13 14:56:11,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:56:11,268 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:11,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1686667137, now seen corresponding path program 1 times [2020-10-13 14:56:11,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:11,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362303352] [2020-10-13 14:56:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:12,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:12,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:56:12,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-13 14:56:12,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:56:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 14:56:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 14:56:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:12,402 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:56:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:56:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:12,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:12,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:56:12,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:56:12,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:56:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:56:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:56:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:56:12,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362303352] [2020-10-13 14:56:12,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:56:12,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:56:12,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74273717] [2020-10-13 14:56:12,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:56:12,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:56:12,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:56:12,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:56:12,440 INFO L87 Difference]: Start difference. First operand 19525 states and 27165 transitions. Second operand 4 states. [2020-10-13 14:56:12,701 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:56:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:16,345 INFO L93 Difference]: Finished difference Result 42472 states and 61074 transitions. [2020-10-13 14:56:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:56:16,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-13 14:56:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:16,390 INFO L225 Difference]: With dead ends: 42472 [2020-10-13 14:56:16,390 INFO L226 Difference]: Without dead ends: 34564 [2020-10-13 14:56:16,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:56:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34564 states. [2020-10-13 14:56:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34564 to 34424. [2020-10-13 14:56:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34424 states. [2020-10-13 14:56:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34424 states to 34424 states and 48382 transitions. [2020-10-13 14:56:18,262 INFO L78 Accepts]: Start accepts. Automaton has 34424 states and 48382 transitions. Word has length 152 [2020-10-13 14:56:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:18,262 INFO L479 AbstractCegarLoop]: Abstraction has 34424 states and 48382 transitions. [2020-10-13 14:56:18,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:56:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 34424 states and 48382 transitions. [2020-10-13 14:56:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:56:18,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:18,286 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] [2020-10-13 14:56:18,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:56:18,286 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:18,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1687005761, now seen corresponding path program 1 times [2020-10-13 14:56:18,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:18,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155577401] [2020-10-13 14:56:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 14:56:18,335 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 14:56:18,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 14:56:18,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:56:18,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 02:56:18 BoogieIcfgContainer [2020-10-13 14:56:18,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 14:56:18,389 INFO L168 Benchmark]: Toolchain (without parser) took 103647.54 ms. Allocated memory was 148.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 102.6 MB in the beginning and 792.8 MB in the end (delta: -690.2 MB). Peak memory consumption was 953.4 MB. Max. memory is 7.1 GB. [2020-10-13 14:56:18,390 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 14:56:18,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1290.59 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 160.6 MB in the end (delta: -58.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-10-13 14:56:18,391 INFO L168 Benchmark]: Boogie Preprocessor took 113.95 ms. Allocated memory is still 205.5 MB. Free memory was 160.6 MB in the beginning and 155.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-10-13 14:56:18,392 INFO L168 Benchmark]: RCFGBuilder took 1481.56 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 155.8 MB in the beginning and 88.9 MB in the end (delta: 66.8 MB). Peak memory consumption was 96.2 MB. Max. memory is 7.1 GB. [2020-10-13 14:56:18,392 INFO L168 Benchmark]: TraceAbstraction took 100754.46 ms. Allocated memory was 234.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 88.9 MB in the beginning and 792.8 MB in the end (delta: -703.9 MB). Peak memory consumption was 853.2 MB. Max. memory is 7.1 GB. [2020-10-13 14:56:18,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1290.59 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 160.6 MB in the end (delta: -58.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.95 ms. Allocated memory is still 205.5 MB. Free memory was 160.6 MB in the beginning and 155.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1481.56 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 155.8 MB in the beginning and 88.9 MB in the end (delta: 66.8 MB). Peak memory consumption was 96.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 100754.46 ms. Allocated memory was 234.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 88.9 MB in the beginning and 792.8 MB in the end (delta: -703.9 MB). Peak memory consumption was 853.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] _Bool newmax1 = 0; [L47] char id2 = '\x0'; [L48] char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] _Bool newmax2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L62] _Bool newmax3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1863; [L71] int __return_2009; [L72] int __return_2142; [L73] int __return_2281; [L74] int __return_3069; [L75] int __return_3038; [L76] int __return_2975; [L77] int __return_2941; [L78] int __tmp_2420_0; [L79] int __return_2543; [L80] int __return_2433; [L81] int __return_2828; [L82] int __return_2794; [L83] int __return_2710; [L84] int __return_2419; [L87] int main__c1; [L88] int main__i2; [L89] main__c1 = 0 [L90] ep12 = __VERIFIER_nondet_bool() [L91] ep13 = __VERIFIER_nondet_bool() [L92] ep21 = __VERIFIER_nondet_bool() [L93] ep23 = __VERIFIER_nondet_bool() [L94] ep31 = __VERIFIER_nondet_bool() [L95] ep32 = __VERIFIER_nondet_bool() [L96] id1 = __VERIFIER_nondet_char() [L97] r1 = __VERIFIER_nondet_char() [L98] st1 = __VERIFIER_nondet_char() [L99] nl1 = __VERIFIER_nondet_char() [L100] m1 = __VERIFIER_nondet_char() [L101] max1 = __VERIFIER_nondet_char() [L102] mode1 = __VERIFIER_nondet_bool() [L103] newmax1 = __VERIFIER_nondet_bool() [L104] id2 = __VERIFIER_nondet_char() [L105] r2 = __VERIFIER_nondet_char() [L106] st2 = __VERIFIER_nondet_char() [L107] nl2 = __VERIFIER_nondet_char() [L108] m2 = __VERIFIER_nondet_char() [L109] max2 = __VERIFIER_nondet_char() [L110] mode2 = __VERIFIER_nondet_bool() [L111] newmax2 = __VERIFIER_nondet_bool() [L112] id3 = __VERIFIER_nondet_char() [L113] r3 = __VERIFIER_nondet_char() [L114] st3 = __VERIFIER_nondet_char() [L115] nl3 = __VERIFIER_nondet_char() [L116] m3 = __VERIFIER_nondet_char() [L117] max3 = __VERIFIER_nondet_char() [L118] mode3 = __VERIFIER_nondet_bool() [L119] newmax3 = __VERIFIER_nondet_bool() [L121] _Bool init__r121; [L122] _Bool init__r131; [L123] _Bool init__r211; [L124] _Bool init__r231; [L125] _Bool init__r311; [L126] _Bool init__r321; [L127] _Bool init__r122; [L128] int init__tmp; [L129] _Bool init__r132; [L130] int init__tmp___0; [L131] _Bool init__r212; [L132] int init__tmp___1; [L133] _Bool init__r232; [L134] int init__tmp___2; [L135] _Bool init__r312; [L136] int init__tmp___3; [L137] _Bool init__r322; [L138] int init__tmp___4; [L139] int init__tmp___5; [L140] init__r121 = ep12 [L141] init__r131 = ep13 [L142] init__r211 = ep21 [L143] init__r231 = ep23 [L144] init__r311 = ep31 [L145] init__r321 = ep32 [L146] COND FALSE !(!(init__r121 == 0)) [L3140] COND FALSE !(!(init__r131 == 0)) [L3156] init__tmp = 0 [L150] init__r122 = (_Bool)init__tmp [L151] COND FALSE !(!(init__r131 == 0)) [L3117] COND FALSE !(!(init__r121 == 0)) [L3133] init__tmp___0 = 0 [L155] init__r132 = (_Bool)init__tmp___0 [L156] COND FALSE !(!(init__r211 == 0)) [L3094] COND FALSE !(!(init__r231 == 0)) [L3110] init__tmp___1 = 0 [L160] init__r212 = (_Bool)init__tmp___1 [L161] COND FALSE !(!(init__r231 == 0)) [L3071] COND FALSE !(!(init__r211 == 0)) [L3087] init__tmp___2 = 0 [L165] init__r232 = (_Bool)init__tmp___2 [L166] COND FALSE !(!(init__r311 == 0)) [L3048] COND FALSE !(!(init__r321 == 0)) [L3064] init__tmp___3 = 0 [L170] init__r312 = (_Bool)init__tmp___3 [L171] COND FALSE !(!(init__r321 == 0)) [L3025] COND FALSE !(!(init__r311 == 0)) [L3041] init__tmp___4 = 0 [L175] init__r322 = (_Bool)init__tmp___4 [L176] COND TRUE ((int)id1) != ((int)id2) [L178] COND TRUE ((int)id1) != ((int)id3) [L180] COND TRUE ((int)id2) != ((int)id3) [L182] COND TRUE ((int)id1) >= 0 [L184] COND TRUE ((int)id2) >= 0 [L186] COND TRUE ((int)id3) >= 0 [L188] COND TRUE ((int)r1) == 0 [L190] COND TRUE ((int)r2) == 0 [L192] COND TRUE ((int)r3) == 0 [L194] COND TRUE ((int)max1) == ((int)id1) [L196] COND TRUE ((int)max2) == ((int)id2) [L198] COND TRUE ((int)max3) == ((int)id3) [L200] COND TRUE ((int)st1) == 0 [L202] COND TRUE ((int)st2) == 0 [L204] COND TRUE ((int)st3) == 0 [L206] COND TRUE ((int)nl1) == 0 [L208] COND TRUE ((int)nl2) == 0 [L210] COND TRUE ((int)nl3) == 0 [L212] COND TRUE ((int)mode1) == 0 [L214] COND TRUE ((int)mode2) == 0 [L216] COND TRUE ((int)mode3) == 0 [L218] COND TRUE !(newmax1 == 0) [L220] COND TRUE !(newmax2 == 0) [L222] COND TRUE !(newmax3 == 0) [L224] init__tmp___5 = 1 [L225] __return_1863 = init__tmp___5 [L226] main__i2 = __return_1863 [L227] COND TRUE main__i2 != 0 [L229] p12_old = nomsg [L230] p12_new = nomsg [L231] p13_old = nomsg [L232] p13_new = nomsg [L233] p21_old = nomsg [L234] p21_new = nomsg [L235] p23_old = nomsg [L236] p23_new = nomsg [L237] p31_old = nomsg [L238] p31_new = nomsg [L239] p32_old = nomsg [L240] p32_new = nomsg [L241] main__i2 = 0 [L242] COND TRUE main__i2 < 6 [L245] _Bool node1__newmax; [L246] node1__newmax = 0 [L247] COND FALSE !(!(mode1 == 0)) [L253] COND TRUE ((int)r1) < 2 [L255] COND FALSE !(!(ep12 == 0)) [L268] COND FALSE !(!(ep13 == 0)) [L281] mode1 = 1 [L283] _Bool node2__newmax; [L284] node2__newmax = 0 [L285] COND FALSE !(!(mode2 == 0)) [L291] COND TRUE ((int)r2) < 2 [L293] COND FALSE !(!(ep21 == 0)) [L306] COND FALSE !(!(ep23 == 0)) [L319] mode2 = 1 [L321] _Bool node3__newmax; [L322] node3__newmax = 0 [L323] COND FALSE !(!(mode3 == 0)) [L329] COND TRUE ((int)r3) < 2 [L331] COND FALSE !(!(ep31 == 0)) [L344] COND FALSE !(!(ep32 == 0)) [L357] mode3 = 1 [L358] p12_old = p12_new [L359] p12_new = nomsg [L360] p13_old = p13_new [L361] p13_new = nomsg [L362] p21_old = p21_new [L363] p21_new = nomsg [L364] p23_old = p23_new [L365] p23_new = nomsg [L366] p31_old = p31_new [L367] p31_new = nomsg [L368] p32_old = p32_new [L369] p32_new = nomsg [L371] int check__tmp; [L372] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L374] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L376] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L378] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L380] COND FALSE !(((int)r1) >= 2) [L386] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L388] COND TRUE ((int)r1) < 2 [L390] COND FALSE !(((int)r1) >= 2) [L396] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L398] COND TRUE ((int)r1) < 2 [L400] check__tmp = 1 [L401] __return_2009 = check__tmp [L402] main__c1 = __return_2009 [L404] _Bool __tmp_1; [L405] __tmp_1 = main__c1 [L406] _Bool assert__arg; [L407] assert__arg = __tmp_1 [L408] COND FALSE !(assert__arg == 0) [L414] int main____CPAchecker_TMP_0 = main__i2; [L415] main__i2 = main__i2 + 1 [L416] COND TRUE main__i2 < 6 [L419] _Bool node1__newmax; [L420] node1__newmax = 0 [L421] COND TRUE !(mode1 == 0) [L423] r1 = (char)(((int)r1) + 1) [L424] COND FALSE !(!(ep21 == 0)) [L433] COND FALSE !(!(ep31 == 0)) [L442] newmax1 = node1__newmax [L443] COND FALSE !(((int)r1) == 2) [L449] mode1 = 0 [L451] _Bool node2__newmax; [L452] node2__newmax = 0 [L453] COND TRUE !(mode2 == 0) [L455] r2 = (char)(((int)r2) + 1) [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] r3 = (char)(((int)r3) + 1) [L488] COND FALSE !(!(ep13 == 0)) [L497] COND FALSE !(!(ep23 == 0)) [L506] newmax3 = node3__newmax [L507] COND FALSE !(((int)r3) == 2) [L513] mode3 = 0 [L514] p12_old = p12_new [L515] p12_new = nomsg [L516] p13_old = p13_new [L517] p13_new = nomsg [L518] p21_old = p21_new [L519] p21_new = nomsg [L520] p23_old = p23_new [L521] p23_new = nomsg [L522] p31_old = p31_new [L523] p31_new = nomsg [L524] p32_old = p32_new [L525] p32_new = nomsg [L527] int check__tmp; [L528] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L530] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L532] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L534] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L536] COND FALSE !(((int)r1) >= 2) [L542] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L544] COND TRUE ((int)r1) < 2 [L546] COND FALSE !(((int)r1) >= 2) [L552] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L554] COND TRUE ((int)r1) < 2 [L556] check__tmp = 1 [L557] __return_2142 = check__tmp [L558] main__c1 = __return_2142 [L560] _Bool __tmp_2; [L561] __tmp_2 = main__c1 [L562] _Bool assert__arg; [L563] assert__arg = __tmp_2 [L564] COND FALSE !(assert__arg == 0) [L570] int main____CPAchecker_TMP_0 = main__i2; [L571] main__i2 = main__i2 + 1 [L572] COND TRUE main__i2 < 6 [L575] _Bool node1__newmax; [L576] node1__newmax = 0 [L577] COND FALSE !(!(mode1 == 0)) [L583] COND TRUE ((int)r1) < 2 [L585] COND FALSE !(!(ep12 == 0)) [L598] COND FALSE !(!(ep13 == 0)) [L611] mode1 = 1 [L613] _Bool node2__newmax; [L614] node2__newmax = 0 [L615] COND FALSE !(!(mode2 == 0)) [L621] COND TRUE ((int)r2) < 2 [L623] COND FALSE !(!(ep21 == 0)) [L636] COND FALSE !(!(ep23 == 0)) [L649] mode2 = 1 [L651] _Bool node3__newmax; [L652] node3__newmax = 0 [L653] COND FALSE !(!(mode3 == 0)) [L659] COND TRUE ((int)r3) < 2 [L661] COND FALSE !(!(ep31 == 0)) [L674] COND FALSE !(!(ep32 == 0)) [L687] mode3 = 1 [L688] p12_old = p12_new [L689] p12_new = nomsg [L690] p13_old = p13_new [L691] p13_new = nomsg [L692] p21_old = p21_new [L693] p21_new = nomsg [L694] p23_old = p23_new [L695] p23_new = nomsg [L696] p31_old = p31_new [L697] p31_new = nomsg [L698] p32_old = p32_new [L699] p32_new = nomsg [L701] int check__tmp; [L702] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L704] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L706] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L708] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L710] COND FALSE !(((int)r1) >= 2) [L716] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L718] COND TRUE ((int)r1) < 2 [L720] COND FALSE !(((int)r1) >= 2) [L726] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L728] COND TRUE ((int)r1) < 2 [L730] check__tmp = 1 [L731] __return_2281 = check__tmp [L732] main__c1 = __return_2281 [L734] _Bool __tmp_3; [L735] __tmp_3 = main__c1 [L736] _Bool assert__arg; [L737] assert__arg = __tmp_3 [L738] COND FALSE !(assert__arg == 0) [L744] int main____CPAchecker_TMP_0 = main__i2; [L745] main__i2 = main__i2 + 1 [L746] COND TRUE main__i2 < 6 [L749] _Bool node1__newmax; [L750] node1__newmax = 0 [L751] COND TRUE !(mode1 == 0) [L753] r1 = (char)(((int)r1) + 1) [L754] COND FALSE !(!(ep21 == 0)) [L763] COND FALSE !(!(ep31 == 0)) [L772] newmax1 = node1__newmax [L773] COND TRUE ((int)r1) == 2 [L775] COND TRUE ((int)max1) == ((int)id1) [L777] st1 = 1 [L778] mode1 = 0 [L780] _Bool node2__newmax; [L781] node2__newmax = 0 [L782] COND TRUE !(mode2 == 0) [L784] r2 = (char)(((int)r2) + 1) [L785] COND FALSE !(!(ep12 == 0)) [L794] COND FALSE !(!(ep32 == 0)) [L803] newmax2 = node2__newmax [L804] COND TRUE ((int)r2) == 2 [L806] COND TRUE ((int)max2) == ((int)id2) [L808] st2 = 1 [L809] mode2 = 0 [L811] _Bool node3__newmax; [L812] node3__newmax = 0 [L813] COND TRUE !(mode3 == 0) [L815] r3 = (char)(((int)r3) + 1) [L816] COND FALSE !(!(ep13 == 0)) [L825] COND FALSE !(!(ep23 == 0)) [L834] newmax3 = node3__newmax [L835] COND TRUE ((int)r3) == 2 [L837] COND TRUE ((int)max3) == ((int)id3) [L839] st3 = 1 [L840] mode3 = 0 [L841] p12_old = p12_new [L842] p12_new = nomsg [L843] p13_old = p13_new [L844] p13_new = nomsg [L845] p21_old = p21_new [L846] p21_new = nomsg [L847] p23_old = p23_new [L848] p23_new = nomsg [L849] p31_old = p31_new [L850] p31_new = nomsg [L851] p32_old = p32_new [L852] p32_new = nomsg [L854] int check__tmp; [L855] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L861] check__tmp = 0 [L862] __return_3069 = check__tmp [L863] main__c1 = __return_3069 [L865] _Bool __tmp_4; [L866] __tmp_4 = main__c1 [L867] _Bool assert__arg; [L868] assert__arg = __tmp_4 [L869] COND TRUE assert__arg == 0 [L871] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 416 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 100.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12110 SDtfs, 10917 SDslu, 6854 SDs, 0 SdLazy, 12849 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34424occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 5422 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 50.3s InterpolantComputationTime, 2103 NumberOfCodeBlocks, 2103 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1938 ConstructedInterpolants, 0 QuantifiedInterpolants, 1145708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...