/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_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:06:23,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:06:23,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:06:23,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:06:23,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:06:23,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:06:23,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:06:23,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:06:23,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:06:23,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:06:23,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:06:23,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:06:23,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:06:23,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:06:23,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:06:23,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:06:23,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:06:23,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:06:23,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:06:23,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:06:24,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:06:24,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:06:24,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:06:24,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:06:24,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:06:24,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:06:24,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:06:24,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:06:24,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:06:24,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:06:24,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:06:24,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:06:24,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:06:24,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:06:24,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:06:24,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:06:24,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:06:24,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:06:24,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:06:24,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:06:24,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:06:24,020 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 14:06:24,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:06:24,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:06:24,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:06:24,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:06:24,070 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:06:24,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:06:24,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:06:24,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:06:24,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:06:24,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:06:24,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:06:24,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:06:24,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:06:24,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:06:24,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:06:24,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:06:24,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:06:24,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:06:24,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:06:24,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:06:24,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:06:24,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:06:24,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:06:24,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:06:24,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:06:24,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:06:24,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:06:24,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:06:24,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:06:24,075 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 14:06:24,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:06:24,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:06:24,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:06:24,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:06:24,386 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:06:24,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-13 14:06:24,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e1c7d656/ccf1134e907d446cb01b980beb81de43/FLAGe70f595ff [2020-10-13 14:06:25,057 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:06:25,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-13 14:06:25,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e1c7d656/ccf1134e907d446cb01b980beb81de43/FLAGe70f595ff [2020-10-13 14:06:25,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e1c7d656/ccf1134e907d446cb01b980beb81de43 [2020-10-13 14:06:25,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:06:25,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:06:25,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:06:25,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:06:25,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:06:25,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:06:25" (1/1) ... [2020-10-13 14:06:25,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bab5c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:25, skipping insertion in model container [2020-10-13 14:06:25,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:06:25" (1/1) ... [2020-10-13 14:06:25,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:06:25,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:06:26,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:06:26,639 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:06:27,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:06:27,349 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:06:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27 WrapperNode [2020-10-13 14:06:27,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:06:27,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:06:27,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:06:27,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:06:27,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (1/1) ... [2020-10-13 14:06:27,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:06:27,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:06:27,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:06:27,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:06:27,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (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 14:06:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:06:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:06:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:06:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:06:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:06:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:06:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:06:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:06:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:06:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:06:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:06:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:06:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:06:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:06:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:06:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:06:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:06:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:06:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:06:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:06:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:06:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:06:31,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:06:31,356 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:06:31,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:06:31 BoogieIcfgContainer [2020-10-13 14:06:31,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:06:31,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:06:31,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:06:31,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:06:31,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:06:25" (1/3) ... [2020-10-13 14:06:31,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1ac43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:06:31, skipping insertion in model container [2020-10-13 14:06:31,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:27" (2/3) ... [2020-10-13 14:06:31,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1ac43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:06:31, skipping insertion in model container [2020-10-13 14:06:31,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:06:31" (3/3) ... [2020-10-13 14:06:31,377 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-13 14:06:31,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:06:31,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:06:31,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:06:31,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:06:31,441 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:06:31,441 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:06:31,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:06:31,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:06:31,442 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:06:31,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:06:31,442 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:06:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states. [2020-10-13 14:06:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-13 14:06:31,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:31,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:31,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1508496326, now seen corresponding path program 1 times [2020-10-13 14:06:31,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:31,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536951887] [2020-10-13 14:06:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:35,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:37,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-13 14:06:37,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:06:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5218 [2020-10-13 14:06:37,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 14:06:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 14:06:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:06:38,921 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:06:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:38,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:38,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:38,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:06:38,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:06:39,180 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 14:06:39,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536951887] [2020-10-13 14:06:39,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:39,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:39,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625710198] [2020-10-13 14:06:39,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:39,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:39,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:39,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:39,207 INFO L87 Difference]: Start difference. First operand 1439 states. Second operand 4 states. [2020-10-13 14:06:40,017 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 14:06:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:51,549 INFO L93 Difference]: Finished difference Result 2885 states and 5050 transitions. [2020-10-13 14:06:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:06:51,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 356 [2020-10-13 14:06:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:51,600 INFO L225 Difference]: With dead ends: 2885 [2020-10-13 14:06:51,600 INFO L226 Difference]: Without dead ends: 2009 [2020-10-13 14:06:51,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:06:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-10-13 14:06:51,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2007. [2020-10-13 14:06:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2007 states. [2020-10-13 14:06:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3354 transitions. [2020-10-13 14:06:51,784 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3354 transitions. Word has length 356 [2020-10-13 14:06:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:51,785 INFO L479 AbstractCegarLoop]: Abstraction has 2007 states and 3354 transitions. [2020-10-13 14:06:51,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:06:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3354 transitions. [2020-10-13 14:06:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-13 14:06:51,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:51,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:51,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:06:51,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:51,796 INFO L82 PathProgramCache]: Analyzing trace with hash 969518298, now seen corresponding path program 1 times [2020-10-13 14:06:51,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:51,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347010685] [2020-10-13 14:06:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:53,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:55,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:57,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:57,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-13 14:06:57,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:06:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:06:57,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-13 14:06:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:06:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:58,023 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:06:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:58,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:06:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:06:58,323 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 14:06:58,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347010685] [2020-10-13 14:06:58,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:58,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:58,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725073527] [2020-10-13 14:06:58,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:58,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:58,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:58,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:58,331 INFO L87 Difference]: Start difference. First operand 2007 states and 3354 transitions. Second operand 4 states. [2020-10-13 14:06:59,174 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 14:07:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:09,252 INFO L93 Difference]: Finished difference Result 4414 states and 7293 transitions. [2020-10-13 14:07:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:09,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 358 [2020-10-13 14:07:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:09,270 INFO L225 Difference]: With dead ends: 4414 [2020-10-13 14:07:09,270 INFO L226 Difference]: Without dead ends: 3001 [2020-10-13 14:07:09,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:09,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-13 14:07:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2999. [2020-10-13 14:07:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-13 14:07:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4970 transitions. [2020-10-13 14:07:09,387 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4970 transitions. Word has length 358 [2020-10-13 14:07:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:09,388 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 4970 transitions. [2020-10-13 14:07:09,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:09,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4970 transitions. [2020-10-13 14:07:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-13 14:07:09,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:09,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:09,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:07:09,399 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:09,400 INFO L82 PathProgramCache]: Analyzing trace with hash 379381004, now seen corresponding path program 1 times [2020-10-13 14:07:09,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:09,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358495732] [2020-10-13 14:07:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:12,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:14,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:14,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:14,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-13 14:07:14,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:07:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 14:07:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:07:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 14:07:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:07:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:15,541 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:07:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:15,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:15,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:07:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:15,712 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 14:07:15,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358495732] [2020-10-13 14:07:15,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:15,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:07:15,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155014975] [2020-10-13 14:07:15,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:07:15,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:15,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:07:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:15,718 INFO L87 Difference]: Start difference. First operand 2999 states and 4970 transitions. Second operand 4 states. [2020-10-13 14:07:16,446 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 14:07:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:25,936 INFO L93 Difference]: Finished difference Result 7054 states and 11588 transitions. [2020-10-13 14:07:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:25,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 360 [2020-10-13 14:07:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:25,962 INFO L225 Difference]: With dead ends: 7054 [2020-10-13 14:07:25,962 INFO L226 Difference]: Without dead ends: 4672 [2020-10-13 14:07:25,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:25,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2020-10-13 14:07:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4670. [2020-10-13 14:07:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4670 states. [2020-10-13 14:07:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 7678 transitions. [2020-10-13 14:07:26,128 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 7678 transitions. Word has length 360 [2020-10-13 14:07:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:26,128 INFO L479 AbstractCegarLoop]: Abstraction has 4670 states and 7678 transitions. [2020-10-13 14:07:26,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:26,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 7678 transitions. [2020-10-13 14:07:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-13 14:07:26,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:26,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:26,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:07:26,146 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash -799467910, now seen corresponding path program 1 times [2020-10-13 14:07:26,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:26,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668943651] [2020-10-13 14:07:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:31,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:31,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 14:07:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:07:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 14:07:31,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:07:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 14:07:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:07:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:07:32,133 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:07:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:32,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:07:32,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:32,255 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 14:07:32,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668943651] [2020-10-13 14:07:32,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:32,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:07:32,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985327459] [2020-10-13 14:07:32,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:07:32,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:32,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:07:32,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:32,257 INFO L87 Difference]: Start difference. First operand 4670 states and 7678 transitions. Second operand 4 states. [2020-10-13 14:07:32,945 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 14:07:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:41,067 INFO L93 Difference]: Finished difference Result 11409 states and 18623 transitions. [2020-10-13 14:07:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:41,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2020-10-13 14:07:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:41,098 INFO L225 Difference]: With dead ends: 11409 [2020-10-13 14:07:41,098 INFO L226 Difference]: Without dead ends: 7379 [2020-10-13 14:07:41,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7379 states. [2020-10-13 14:07:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7379 to 7377. [2020-10-13 14:07:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7377 states. [2020-10-13 14:07:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 12028 transitions. [2020-10-13 14:07:41,407 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 12028 transitions. Word has length 362 [2020-10-13 14:07:41,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:41,408 INFO L479 AbstractCegarLoop]: Abstraction has 7377 states and 12028 transitions. [2020-10-13 14:07:41,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 12028 transitions. [2020-10-13 14:07:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-13 14:07:41,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:41,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:41,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:07:41,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1165386402, now seen corresponding path program 1 times [2020-10-13 14:07:41,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:41,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314492742] [2020-10-13 14:07:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-13 14:07:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:07:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:07:46,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:07:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 14:07:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:07:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:47,233 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:07:47,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:47,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:47,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:47,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:47,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:07:47,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:47,346 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 14:07:47,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314492742] [2020-10-13 14:07:47,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:47,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:07:47,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766642054] [2020-10-13 14:07:47,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:07:47,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:47,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:07:47,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:47,349 INFO L87 Difference]: Start difference. First operand 7377 states and 12028 transitions. Second operand 4 states. [2020-10-13 14:07:48,038 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 14:07:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:56,790 INFO L93 Difference]: Finished difference Result 18228 states and 29512 transitions. [2020-10-13 14:07:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:56,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2020-10-13 14:07:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:56,832 INFO L225 Difference]: With dead ends: 18228 [2020-10-13 14:07:56,833 INFO L226 Difference]: Without dead ends: 11514 [2020-10-13 14:07:56,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11514 states. [2020-10-13 14:07:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11514 to 11512. [2020-10-13 14:07:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11512 states. [2020-10-13 14:07:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11512 states to 11512 states and 18578 transitions. [2020-10-13 14:07:57,305 INFO L78 Accepts]: Start accepts. Automaton has 11512 states and 18578 transitions. Word has length 364 [2020-10-13 14:07:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:57,305 INFO L479 AbstractCegarLoop]: Abstraction has 11512 states and 18578 transitions. [2020-10-13 14:07:57,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 11512 states and 18578 transitions. [2020-10-13 14:07:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-13 14:07:57,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:57,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:57,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:07:57,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1749060762, now seen corresponding path program 1 times [2020-10-13 14:07:57,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:57,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119381014] [2020-10-13 14:07:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:57,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:58,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:58,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:01,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:02,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-13 14:08:02,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:08:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 14:08:02,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 290 [2020-10-13 14:08:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:08:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:03,292 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:08:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:03,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:03,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:03,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:03,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:08:03,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:03,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:03,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:03,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:03,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:03,423 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 14:08:03,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119381014] [2020-10-13 14:08:03,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:03,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:03,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412222219] [2020-10-13 14:08:03,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:03,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:03,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:03,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:03,426 INFO L87 Difference]: Start difference. First operand 11512 states and 18578 transitions. Second operand 4 states. [2020-10-13 14:08:04,105 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-13 14:08:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:14,309 INFO L93 Difference]: Finished difference Result 18668 states and 30628 transitions. [2020-10-13 14:08:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:08:14,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2020-10-13 14:08:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:14,339 INFO L225 Difference]: With dead ends: 18668 [2020-10-13 14:08:14,339 INFO L226 Difference]: Without dead ends: 14122 [2020-10-13 14:08:14,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:08:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14122 states. [2020-10-13 14:08:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14122 to 14104. [2020-10-13 14:08:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14104 states. [2020-10-13 14:08:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14104 states to 14104 states and 22834 transitions. [2020-10-13 14:08:14,720 INFO L78 Accepts]: Start accepts. Automaton has 14104 states and 22834 transitions. Word has length 366 [2020-10-13 14:08:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:14,721 INFO L479 AbstractCegarLoop]: Abstraction has 14104 states and 22834 transitions. [2020-10-13 14:08:14,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:08:14,721 INFO L276 IsEmpty]: Start isEmpty. Operand 14104 states and 22834 transitions. [2020-10-13 14:08:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-13 14:08:14,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:14,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:14,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:08:14,745 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1187903306, now seen corresponding path program 1 times [2020-10-13 14:08:14,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:14,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053626760] [2020-10-13 14:08:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:19,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:19,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:08:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:20,632 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:08:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:20,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:20,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:08:20,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:20,756 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 14:08:20,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053626760] [2020-10-13 14:08:20,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:20,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:20,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435456978] [2020-10-13 14:08:20,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:20,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:20,759 INFO L87 Difference]: Start difference. First operand 14104 states and 22834 transitions. Second operand 4 states. [2020-10-13 14:08:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:28,688 INFO L93 Difference]: Finished difference Result 21916 states and 35748 transitions. [2020-10-13 14:08:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:08:28,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2020-10-13 14:08:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:28,707 INFO L225 Difference]: With dead ends: 21916 [2020-10-13 14:08:28,708 INFO L226 Difference]: Without dead ends: 9236 [2020-10-13 14:08:28,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9236 states. [2020-10-13 14:08:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9236 to 9170. [2020-10-13 14:08:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9170 states. [2020-10-13 14:08:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 15012 transitions. [2020-10-13 14:08:29,059 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 15012 transitions. Word has length 366 [2020-10-13 14:08:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:29,059 INFO L479 AbstractCegarLoop]: Abstraction has 9170 states and 15012 transitions. [2020-10-13 14:08:29,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:08:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 15012 transitions. [2020-10-13 14:08:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-13 14:08:29,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:29,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:29,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:08:29,070 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1758702038, now seen corresponding path program 1 times [2020-10-13 14:08:29,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:29,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555150943] [2020-10-13 14:08:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:32,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:34,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-13 14:08:34,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:08:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:08:34,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-10-13 14:08:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 14:08:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:34,972 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:08:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:08:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:35,166 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 14:08:35,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555150943] [2020-10-13 14:08:35,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:35,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:35,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607850163] [2020-10-13 14:08:35,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:35,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:35,169 INFO L87 Difference]: Start difference. First operand 9170 states and 15012 transitions. Second operand 4 states. [2020-10-13 14:08:35,845 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 14:08:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:44,543 INFO L93 Difference]: Finished difference Result 19270 states and 31878 transitions. [2020-10-13 14:08:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:08:44,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 370 [2020-10-13 14:08:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:44,571 INFO L225 Difference]: With dead ends: 19270 [2020-10-13 14:08:44,571 INFO L226 Difference]: Without dead ends: 14500 [2020-10-13 14:08:44,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:08:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2020-10-13 14:08:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 14498. [2020-10-13 14:08:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14498 states. [2020-10-13 14:08:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14498 states to 14498 states and 23780 transitions. [2020-10-13 14:08:45,254 INFO L78 Accepts]: Start accepts. Automaton has 14498 states and 23780 transitions. Word has length 370 [2020-10-13 14:08:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:45,255 INFO L479 AbstractCegarLoop]: Abstraction has 14498 states and 23780 transitions. [2020-10-13 14:08:45,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:08:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14498 states and 23780 transitions. [2020-10-13 14:08:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-13 14:08:45,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:45,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:45,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:08:45,264 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1548810392, now seen corresponding path program 1 times [2020-10-13 14:08:45,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:45,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96207200] [2020-10-13 14:08:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:45,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:47,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:50,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:50,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 14:08:50,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:08:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 14:08:50,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:08:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:08:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-13 14:08:50,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:51,420 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:08:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:51,609 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 14:08:51,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96207200] [2020-10-13 14:08:51,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:51,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:08:51,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111822711] [2020-10-13 14:08:51,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:08:51,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:08:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:08:51,612 INFO L87 Difference]: Start difference. First operand 14498 states and 23780 transitions. Second operand 5 states. [2020-10-13 14:09:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:09:05,102 INFO L93 Difference]: Finished difference Result 43192 states and 70847 transitions. [2020-10-13 14:09:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:09:05,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 371 [2020-10-13 14:09:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:09:05,147 INFO L225 Difference]: With dead ends: 43192 [2020-10-13 14:09:05,147 INFO L226 Difference]: Without dead ends: 28711 [2020-10-13 14:09:05,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:09:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28711 states. [2020-10-13 14:09:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28711 to 28709. [2020-10-13 14:09:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28709 states. [2020-10-13 14:09:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28709 states to 28709 states and 46959 transitions. [2020-10-13 14:09:06,179 INFO L78 Accepts]: Start accepts. Automaton has 28709 states and 46959 transitions. Word has length 371 [2020-10-13 14:09:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:09:06,180 INFO L479 AbstractCegarLoop]: Abstraction has 28709 states and 46959 transitions. [2020-10-13 14:09:06,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:09:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28709 states and 46959 transitions. [2020-10-13 14:09:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-13 14:09:06,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:06,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:06,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:09:06,203 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:06,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:06,203 INFO L82 PathProgramCache]: Analyzing trace with hash -101550787, now seen corresponding path program 1 times [2020-10-13 14:09:06,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:06,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031211492] [2020-10-13 14:09:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:06,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:11,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:11,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-13 14:09:11,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:09:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:09:11,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:09:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:09:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 14:09:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:12,359 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:09:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:09:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:09:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:09:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:09:12,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:09:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:09:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:09:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:12,630 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 14:09:12,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031211492] [2020-10-13 14:09:12,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:09:12,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:09:12,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209655139] [2020-10-13 14:09:12,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:09:12,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:09:12,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:09:12,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:09:12,632 INFO L87 Difference]: Start difference. First operand 28709 states and 46959 transitions. Second operand 5 states. [2020-10-13 14:09:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:09:29,371 INFO L93 Difference]: Finished difference Result 85489 states and 139824 transitions. [2020-10-13 14:09:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:09:29,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2020-10-13 14:09:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:09:29,437 INFO L225 Difference]: With dead ends: 85489 [2020-10-13 14:09:29,438 INFO L226 Difference]: Without dead ends: 56862 [2020-10-13 14:09:29,473 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 [2020-10-13 14:09:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56862 states. [2020-10-13 14:09:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56862 to 56860. [2020-10-13 14:09:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56860 states. [2020-10-13 14:09:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56860 states to 56860 states and 92745 transitions. [2020-10-13 14:09:33,651 INFO L78 Accepts]: Start accepts. Automaton has 56860 states and 92745 transitions. Word has length 373 [2020-10-13 14:09:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:09:33,652 INFO L479 AbstractCegarLoop]: Abstraction has 56860 states and 92745 transitions. [2020-10-13 14:09:33,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:09:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 56860 states and 92745 transitions. [2020-10-13 14:09:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-13 14:09:33,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:33,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:33,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:09:33,680 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -261503241, now seen corresponding path program 1 times [2020-10-13 14:09:33,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:33,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509876457] [2020-10-13 14:09:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:33,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:38,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:38,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 14:09:38,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:09:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-13 14:09:38,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:09:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:09:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 14:09:38,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:39,881 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 14:09:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:09:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:39,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:39,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:09:39,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:09:39,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:09:39,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:09:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:09:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:09:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:40,075 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 14:09:40,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509876457] [2020-10-13 14:09:40,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:09:40,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:09:40,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187155968] [2020-10-13 14:09:40,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:09:40,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:09:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:09:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:09:40,077 INFO L87 Difference]: Start difference. First operand 56860 states and 92745 transitions. Second operand 5 states. [2020-10-13 14:10:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:01,628 INFO L93 Difference]: Finished difference Result 169288 states and 276087 transitions. [2020-10-13 14:10:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:10:01,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2020-10-13 14:10:01,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:01,763 INFO L225 Difference]: With dead ends: 169288 [2020-10-13 14:10:01,763 INFO L226 Difference]: Without dead ends: 112608 [2020-10-13 14:10:01,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112608 states.