/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:24:37,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:24:37,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:24:37,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:24:37,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:24:37,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:24:37,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:24:37,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:24:37,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:24:37,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:24:37,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:24:37,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:24:37,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:24:37,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:24:37,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:24:37,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:24:37,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:24:37,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:24:37,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:24:37,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:24:37,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:24:37,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:24:37,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:24:37,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:24:37,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:24:37,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:24:37,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:24:37,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:24:37,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:24:37,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:24:37,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:24:37,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:24:37,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:24:37,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:24:37,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:24:37,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:24:37,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:24:37,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:24:37,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:24:37,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:24:37,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:24:37,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:24:37,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:24:37,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:24:37,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:24:37,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:24:37,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:24:37,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:24:37,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:24:37,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:24:37,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:24:37,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:24:37,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:24:37,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:24:37,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:24:37,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:24:37,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:24:37,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:24:37,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:24:37,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:24:37,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:24:37,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:24:37,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:24:37,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:24:37,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:24:37,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:24:37,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:24:37,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:24:37,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:24:37,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:24:37,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:24:37,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:24:37,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:24:37,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:24:37,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:24:37,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:24:37,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:24:37,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:24:38,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ece18949c/78862e41ec954a74bcac1750665c86f8/FLAG2bbefa832 [2020-10-12 19:24:38,674 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:24:38,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:24:38,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ece18949c/78862e41ec954a74bcac1750665c86f8/FLAG2bbefa832 [2020-10-12 19:24:38,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ece18949c/78862e41ec954a74bcac1750665c86f8 [2020-10-12 19:24:38,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:24:38,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:24:38,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:24:38,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:24:38,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:24:38,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:24:38" (1/1) ... [2020-10-12 19:24:38,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e1fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:38, skipping insertion in model container [2020-10-12 19:24:38,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:24:38" (1/1) ... [2020-10-12 19:24:38,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:24:39,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:24:39,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:24:39,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:24:40,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:24:40,215 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:24:40,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40 WrapperNode [2020-10-12 19:24:40,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:24:40,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:24:40,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:24:40,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:24:40,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:24:40,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:24:40,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:24:40,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:24:40,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:24:40,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:24:40,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:24:40,513 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:24:40,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:24:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:24:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:24:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:24:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:24:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:24:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:24:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:24:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:24:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:24:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:24:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:24:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:24:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:24:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:24:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:24:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:24:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:24:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:24:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:24:42,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:24:42,682 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:24:42,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:24:42 BoogieIcfgContainer [2020-10-12 19:24:42,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:24:42,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:24:42,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:24:42,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:24:42,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:24:38" (1/3) ... [2020-10-12 19:24:42,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14421fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:24:42, skipping insertion in model container [2020-10-12 19:24:42,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40" (2/3) ... [2020-10-12 19:24:42,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14421fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:24:42, skipping insertion in model container [2020-10-12 19:24:42,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:24:42" (3/3) ... [2020-10-12 19:24:42,699 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:24:42,709 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:24:42,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:24:42,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:24:42,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:24:42,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:24:42,760 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:24:42,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:24:42,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:24:42,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:24:42,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:24:42,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:24:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states. [2020-10-12 19:24:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-12 19:24:42,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:42,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:24:42,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash -540332224, now seen corresponding path program 1 times [2020-10-12 19:24:42,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:42,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647607390] [2020-10-12 19:24:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:43,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:48,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 19:24:48,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:24:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:24:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:24:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:24:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:24:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:24:49,511 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:24:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:49,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:49,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:24:49,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:24:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:49,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647607390] [2020-10-12 19:24:49,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:49,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:24:49,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144151876] [2020-10-12 19:24:49,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:24:49,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:49,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:24:49,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:24:49,688 INFO L87 Difference]: Start difference. First operand 750 states. Second operand 8 states. [2020-10-12 19:24:50,551 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-12 19:24:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:24:56,614 INFO L93 Difference]: Finished difference Result 2764 states and 4778 transitions. [2020-10-12 19:24:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:24:56,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-12 19:24:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:24:56,656 INFO L225 Difference]: With dead ends: 2764 [2020-10-12 19:24:56,656 INFO L226 Difference]: Without dead ends: 2537 [2020-10-12 19:24:56,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:24:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2020-10-12 19:24:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 943. [2020-10-12 19:24:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-12 19:24:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1640 transitions. [2020-10-12 19:24:56,800 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1640 transitions. Word has length 207 [2020-10-12 19:24:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:24:56,801 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1640 transitions. [2020-10-12 19:24:56,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:24:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1640 transitions. [2020-10-12 19:24:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-12 19:24:56,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:56,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:24:56,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:24:56,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash 358844249, now seen corresponding path program 1 times [2020-10-12 19:24:56,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:56,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210847560] [2020-10-12 19:24:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:01,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:01,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-12 19:25:01,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:25:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:25:01,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:25:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-12 19:25:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:25:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:25:02,836 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:25:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:02,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:02,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:02,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:25:02,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:03,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210847560] [2020-10-12 19:25:03,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:03,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:25:03,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056371482] [2020-10-12 19:25:03,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:25:03,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:03,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:25:03,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:25:03,015 INFO L87 Difference]: Start difference. First operand 943 states and 1640 transitions. Second operand 9 states. [2020-10-12 19:25:03,801 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:25:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:10,578 INFO L93 Difference]: Finished difference Result 6525 states and 11083 transitions. [2020-10-12 19:25:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:25:10,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 208 [2020-10-12 19:25:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:10,611 INFO L225 Difference]: With dead ends: 6525 [2020-10-12 19:25:10,611 INFO L226 Difference]: Without dead ends: 6129 [2020-10-12 19:25:10,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:25:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2020-10-12 19:25:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 2044. [2020-10-12 19:25:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2020-10-12 19:25:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3505 transitions. [2020-10-12 19:25:10,797 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3505 transitions. Word has length 208 [2020-10-12 19:25:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:10,799 INFO L479 AbstractCegarLoop]: Abstraction has 2044 states and 3505 transitions. [2020-10-12 19:25:10,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:25:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3505 transitions. [2020-10-12 19:25:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 19:25:10,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:10,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:10,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:25:10,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:10,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1826898137, now seen corresponding path program 1 times [2020-10-12 19:25:10,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:10,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730159183] [2020-10-12 19:25:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:15,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:15,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 19:25:15,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:25:15,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 19:25:15,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:25:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:25:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 19:25:15,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:16,893 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:25:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:25:16,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:16,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730159183] [2020-10-12 19:25:16,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:16,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:25:16,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573400004] [2020-10-12 19:25:17,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:25:17,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:25:17,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:25:17,001 INFO L87 Difference]: Start difference. First operand 2044 states and 3505 transitions. Second operand 9 states. [2020-10-12 19:25:17,704 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:25:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:24,443 INFO L93 Difference]: Finished difference Result 18460 states and 31246 transitions. [2020-10-12 19:25:24,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:25:24,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 209 [2020-10-12 19:25:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:24,525 INFO L225 Difference]: With dead ends: 18460 [2020-10-12 19:25:24,526 INFO L226 Difference]: Without dead ends: 17119 [2020-10-12 19:25:24,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:25:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17119 states. [2020-10-12 19:25:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17119 to 5320. [2020-10-12 19:25:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-12 19:25:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 9038 transitions. [2020-10-12 19:25:25,215 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 9038 transitions. Word has length 209 [2020-10-12 19:25:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:25,215 INFO L479 AbstractCegarLoop]: Abstraction has 5320 states and 9038 transitions. [2020-10-12 19:25:25,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:25:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 9038 transitions. [2020-10-12 19:25:25,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-12 19:25:25,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:25,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:25,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:25:25,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash -860877344, now seen corresponding path program 1 times [2020-10-12 19:25:25,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:25,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982609921] [2020-10-12 19:25:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:25,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:25,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 19:25:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:25:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 19:25:30,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:25:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:25:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 19:25:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:31,118 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:25:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:31,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:31,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:31,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:25:31,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:31,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982609921] [2020-10-12 19:25:31,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:31,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:25:31,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724008005] [2020-10-12 19:25:31,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:25:31,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:31,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:25:31,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:25:31,205 INFO L87 Difference]: Start difference. First operand 5320 states and 9038 transitions. Second operand 9 states. [2020-10-12 19:25:31,907 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:25:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:40,602 INFO L93 Difference]: Finished difference Result 52465 states and 88578 transitions. [2020-10-12 19:25:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:25:40,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2020-10-12 19:25:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:40,734 INFO L225 Difference]: With dead ends: 52465 [2020-10-12 19:25:40,735 INFO L226 Difference]: Without dead ends: 48056 [2020-10-12 19:25:40,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:25:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48056 states. [2020-10-12 19:25:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48056 to 14494. [2020-10-12 19:25:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14494 states. [2020-10-12 19:25:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14494 states to 14494 states and 24503 transitions. [2020-10-12 19:25:42,321 INFO L78 Accepts]: Start accepts. Automaton has 14494 states and 24503 transitions. Word has length 210 [2020-10-12 19:25:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:42,322 INFO L479 AbstractCegarLoop]: Abstraction has 14494 states and 24503 transitions. [2020-10-12 19:25:42,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:25:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14494 states and 24503 transitions. [2020-10-12 19:25:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-12 19:25:42,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:42,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:42,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:25:42,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash -974445810, now seen corresponding path program 1 times [2020-10-12 19:25:42,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:42,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770813921] [2020-10-12 19:25:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:42,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:47,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 19:25:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:25:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 19:25:47,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:25:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:25:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:25:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:48,124 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:25:48,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:48,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:48,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:25:48,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:48,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770813921] [2020-10-12 19:25:48,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:48,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:25:48,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888098376] [2020-10-12 19:25:48,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:25:48,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:48,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:25:48,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:25:48,194 INFO L87 Difference]: Start difference. First operand 14494 states and 24503 transitions. Second operand 9 states. [2020-10-12 19:25:48,936 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:26:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:04,595 INFO L93 Difference]: Finished difference Result 151851 states and 255895 transitions. [2020-10-12 19:26:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:26:04,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-10-12 19:26:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:04,910 INFO L225 Difference]: With dead ends: 151851 [2020-10-12 19:26:04,910 INFO L226 Difference]: Without dead ends: 138504 [2020-10-12 19:26:04,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:26:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138504 states. [2020-10-12 19:26:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138504 to 40003. [2020-10-12 19:26:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40003 states. [2020-10-12 19:26:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40003 states to 40003 states and 67441 transitions. [2020-10-12 19:26:09,094 INFO L78 Accepts]: Start accepts. Automaton has 40003 states and 67441 transitions. Word has length 211 [2020-10-12 19:26:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:09,095 INFO L479 AbstractCegarLoop]: Abstraction has 40003 states and 67441 transitions. [2020-10-12 19:26:09,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:26:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 40003 states and 67441 transitions. [2020-10-12 19:26:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 19:26:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:09,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:09,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:26:09,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:09,112 INFO L82 PathProgramCache]: Analyzing trace with hash -195542937, now seen corresponding path program 1 times [2020-10-12 19:26:09,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:09,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965912173] [2020-10-12 19:26:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:09,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:14,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:26:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:14,885 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:26:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:14,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:14,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:14,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:14,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965912173] [2020-10-12 19:26:14,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:14,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:26:14,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328932929] [2020-10-12 19:26:14,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:26:14,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:14,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:26:14,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:26:14,953 INFO L87 Difference]: Start difference. First operand 40003 states and 67441 transitions. Second operand 9 states. [2020-10-12 19:26:15,666 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-12 19:26:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:56,834 INFO L93 Difference]: Finished difference Result 442937 states and 745367 transitions. [2020-10-12 19:26:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:26:56,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-10-12 19:26:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:57,472 INFO L225 Difference]: With dead ends: 442937 [2020-10-12 19:26:57,472 INFO L226 Difference]: Without dead ends: 404229 [2020-10-12 19:26:57,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:26:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404229 states. [2020-10-12 19:27:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404229 to 111875. [2020-10-12 19:27:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111875 states. [2020-10-12 19:27:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111875 states to 111875 states and 188245 transitions. [2020-10-12 19:27:12,233 INFO L78 Accepts]: Start accepts. Automaton has 111875 states and 188245 transitions. Word has length 212 [2020-10-12 19:27:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:12,233 INFO L479 AbstractCegarLoop]: Abstraction has 111875 states and 188245 transitions. [2020-10-12 19:27:12,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:27:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 111875 states and 188245 transitions. [2020-10-12 19:27:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-12 19:27:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:12,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:27:12,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:27:12,241 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash 513961377, now seen corresponding path program 1 times [2020-10-12 19:27:12,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:12,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645818929] [2020-10-12 19:27:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:17,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:17,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-12 19:27:17,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:27:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:27:17,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:27:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-12 19:27:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:18,089 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:27:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:18,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:27:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:18,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645818929] [2020-10-12 19:27:18,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:18,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:18,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188508829] [2020-10-12 19:27:18,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:18,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:18,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:18,248 INFO L87 Difference]: Start difference. First operand 111875 states and 188245 transitions. Second operand 5 states. [2020-10-12 19:27:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:46,519 INFO L93 Difference]: Finished difference Result 332605 states and 559885 transitions. [2020-10-12 19:27:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:46,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-12 19:27:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:46,955 INFO L225 Difference]: With dead ends: 332605 [2020-10-12 19:27:46,956 INFO L226 Difference]: Without dead ends: 220803 [2020-10-12 19:27:47,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:27:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220803 states. [2020-10-12 19:28:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220803 to 220801. [2020-10-12 19:28:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220801 states. [2020-10-12 19:28:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220801 states to 220801 states and 370612 transitions. [2020-10-12 19:28:13,367 INFO L78 Accepts]: Start accepts. Automaton has 220801 states and 370612 transitions. Word has length 214 [2020-10-12 19:28:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:13,368 INFO L479 AbstractCegarLoop]: Abstraction has 220801 states and 370612 transitions. [2020-10-12 19:28:13,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:28:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 220801 states and 370612 transitions. [2020-10-12 19:28:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-12 19:28:13,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:13,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:28:13,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:28:13,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash -392873358, now seen corresponding path program 1 times [2020-10-12 19:28:13,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:13,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690118962] [2020-10-12 19:28:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:17,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-12 19:28:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:28:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-12 19:28:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:28:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:28:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:28:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:22,223 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-12 19:28:22,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:28:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:22,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690118962] [2020-10-12 19:28:22,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:22,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:28:22,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65134476] [2020-10-12 19:28:22,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:28:22,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:22,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:28:22,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:28:22,302 INFO L87 Difference]: Start difference. First operand 220801 states and 370612 transitions. Second operand 8 states.