/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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:58:19,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:58:19,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:58:19,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:58:19,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:58:19,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:58:19,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:58:19,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:58:19,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:58:19,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:58:19,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:58:19,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:58:19,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:58:19,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:58:19,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:58:19,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:58:19,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:58:19,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:58:19,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:58:19,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:58:19,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:58:19,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:58:19,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:58:19,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:58:19,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:58:19,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:58:19,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:58:19,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:58:19,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:58:19,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:58:19,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:58:19,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:58:19,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:58:19,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:58:19,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:58:19,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:58:19,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:58:19,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:58:19,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:58:19,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:58:19,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:58:19,125 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 13:58:19,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:58:19,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:58:19,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:58:19,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:58:19,150 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:58:19,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:58:19,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:58:19,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:58:19,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:58:19,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:58:19,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:58:19,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:58:19,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:58:19,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:58:19,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:58:19,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:58:19,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:58:19,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:58:19,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:58:19,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:58:19,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:58:19,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:58:19,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:58:19,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:58:19,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:58:19,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:58:19,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:58:19,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:58:19,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:58:19,155 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 13:58:19,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:58:19,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:58:19,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:58:19,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:58:19,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:58:19,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 13:58:19,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dfca66a/0995c12037be4593b642817d3752b9ed/FLAG764cd15b5 [2020-10-13 13:58:20,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:58:20,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 13:58:20,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dfca66a/0995c12037be4593b642817d3752b9ed/FLAG764cd15b5 [2020-10-13 13:58:20,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dfca66a/0995c12037be4593b642817d3752b9ed [2020-10-13 13:58:20,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:58:20,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:58:20,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:58:20,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:58:20,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:58:20,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:58:20" (1/1) ... [2020-10-13 13:58:20,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7205a42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:20, skipping insertion in model container [2020-10-13 13:58:20,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:58:20" (1/1) ... [2020-10-13 13:58:20,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:58:20,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:58:20,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:58:20,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:58:21,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:58:21,151 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:58:21,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21 WrapperNode [2020-10-13 13:58:21,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:58:21,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:58:21,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:58:21,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:58:21,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (1/1) ... [2020-10-13 13:58:21,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:58:21,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:58:21,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:58:21,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:58:21,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (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 13:58:21,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:58:21,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:58:21,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:58:21,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:58:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:58:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:58:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:58:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:58:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:58:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:58:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:58:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:58:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:58:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:58:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:58:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:58:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:58:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:58:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:58:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:58:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:58:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:58:22,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:58:22,802 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:58:22,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:58:22 BoogieIcfgContainer [2020-10-13 13:58:22,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:58:22,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:58:22,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:58:22,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:58:22,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:58:20" (1/3) ... [2020-10-13 13:58:22,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e796d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:58:22, skipping insertion in model container [2020-10-13 13:58:22,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:21" (2/3) ... [2020-10-13 13:58:22,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e796d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:58:22, skipping insertion in model container [2020-10-13 13:58:22,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:58:22" (3/3) ... [2020-10-13 13:58:22,817 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 13:58:22,827 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:58:22,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:58:22,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:58:22,875 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:58:22,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:58:22,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:58:22,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:58:22,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:58:22,876 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:58:22,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:58:22,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:58:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-13 13:58:22,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:58:22,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:22,917 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] [2020-10-13 13:58:22,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:22,923 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-13 13:58:22,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:22,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674819275] [2020-10-13 13:58:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:23,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:28,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:58:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:58:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:58:28,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:58:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:58:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:58:28,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:58:29,172 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:29,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:29,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:29,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:58:29,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:29,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:29,256 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 13:58:29,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674819275] [2020-10-13 13:58:29,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:29,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:58:29,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244972184] [2020-10-13 13:58:29,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:58:29,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:29,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:58:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:29,286 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 7 states. [2020-10-13 13:58:29,882 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-13 13:58:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:32,218 INFO L93 Difference]: Finished difference Result 1423 states and 2426 transitions. [2020-10-13 13:58:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:58:32,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-13 13:58:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:32,245 INFO L225 Difference]: With dead ends: 1423 [2020-10-13 13:58:32,245 INFO L226 Difference]: Without dead ends: 1265 [2020-10-13 13:58:32,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:58:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-13 13:58:32,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 459. [2020-10-13 13:58:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-13 13:58:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 764 transitions. [2020-10-13 13:58:32,339 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 764 transitions. Word has length 114 [2020-10-13 13:58:32,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:32,340 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 764 transitions. [2020-10-13 13:58:32,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:58:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 764 transitions. [2020-10-13 13:58:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 13:58:32,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:32,345 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] [2020-10-13 13:58:32,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:58:32,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash -384564213, now seen corresponding path program 1 times [2020-10-13 13:58:32,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:32,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984147294] [2020-10-13 13:58:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:58:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:58:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 13:58:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:58:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 13:58:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:58:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:58:37,881 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:37,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:37,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:58:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:37,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:58:37,962 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 13:58:37,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984147294] [2020-10-13 13:58:37,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:37,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:58:37,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658954636] [2020-10-13 13:58:37,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:58:37,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:37,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:58:37,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:58:37,967 INFO L87 Difference]: Start difference. First operand 459 states and 764 transitions. Second operand 8 states. [2020-10-13 13:58:38,418 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-13 13:58:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:41,489 INFO L93 Difference]: Finished difference Result 3271 states and 5501 transitions. [2020-10-13 13:58:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:58:41,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-13 13:58:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:41,510 INFO L225 Difference]: With dead ends: 3271 [2020-10-13 13:58:41,510 INFO L226 Difference]: Without dead ends: 3005 [2020-10-13 13:58:41,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:58:41,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-10-13 13:58:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1179. [2020-10-13 13:58:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-13 13:58:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1979 transitions. [2020-10-13 13:58:41,648 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1979 transitions. Word has length 115 [2020-10-13 13:58:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:41,649 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1979 transitions. [2020-10-13 13:58:41,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:58:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1979 transitions. [2020-10-13 13:58:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:58:41,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:41,652 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] [2020-10-13 13:58:41,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:58:41,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:41,653 INFO L82 PathProgramCache]: Analyzing trace with hash 901801030, now seen corresponding path program 1 times [2020-10-13 13:58:41,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:41,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59443803] [2020-10-13 13:58:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:42,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:42,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:46,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:46,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:58:46,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:58:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:58:46,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 13:58:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:58:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:47,266 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:47,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:58:47,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:58:47,358 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 13:58:47,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59443803] [2020-10-13 13:58:47,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:47,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:47,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491288422] [2020-10-13 13:58:47,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:47,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:47,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:47,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:47,365 INFO L87 Difference]: Start difference. First operand 1179 states and 1979 transitions. Second operand 5 states. [2020-10-13 13:58:47,917 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:58:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:49,804 INFO L93 Difference]: Finished difference Result 3887 states and 6550 transitions. [2020-10-13 13:58:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:58:49,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 13:58:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:49,826 INFO L225 Difference]: With dead ends: 3887 [2020-10-13 13:58:49,826 INFO L226 Difference]: Without dead ends: 2998 [2020-10-13 13:58:49,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-10-13 13:58:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2100. [2020-10-13 13:58:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-13 13:58:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3531 transitions. [2020-10-13 13:58:49,984 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3531 transitions. Word has length 116 [2020-10-13 13:58:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:49,985 INFO L479 AbstractCegarLoop]: Abstraction has 2100 states and 3531 transitions. [2020-10-13 13:58:49,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3531 transitions. [2020-10-13 13:58:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:58:49,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:49,988 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] [2020-10-13 13:58:49,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:58:49,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:49,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2128975922, now seen corresponding path program 1 times [2020-10-13 13:58:49,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:49,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690909971] [2020-10-13 13:58:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:55,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:55,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:58:55,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:58:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:58:55,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 13:58:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:58:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:55,450 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:55,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:55,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:55,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:58:55,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:55,501 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 13:58:55,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690909971] [2020-10-13 13:58:55,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:55,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:55,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745996261] [2020-10-13 13:58:55,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:55,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:55,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:55,504 INFO L87 Difference]: Start difference. First operand 2100 states and 3531 transitions. Second operand 5 states. [2020-10-13 13:58:55,875 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:58:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:57,835 INFO L93 Difference]: Finished difference Result 7431 states and 12518 transitions. [2020-10-13 13:58:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:58:57,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 13:58:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:57,864 INFO L225 Difference]: With dead ends: 7431 [2020-10-13 13:58:57,864 INFO L226 Difference]: Without dead ends: 5662 [2020-10-13 13:58:57,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2020-10-13 13:58:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 3877. [2020-10-13 13:58:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-10-13 13:58:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 6519 transitions. [2020-10-13 13:58:58,165 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 6519 transitions. Word has length 117 [2020-10-13 13:58:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:58,165 INFO L479 AbstractCegarLoop]: Abstraction has 3877 states and 6519 transitions. [2020-10-13 13:58:58,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 6519 transitions. [2020-10-13 13:58:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 13:58:58,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:58,168 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] [2020-10-13 13:58:58,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:58:58,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:58,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249933, now seen corresponding path program 1 times [2020-10-13 13:58:58,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:58,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925929747] [2020-10-13 13:58:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:58,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:03,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:59:03,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:59:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4822 [2020-10-13 13:59:03,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 13:59:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:59:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:03,427 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:59:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:59:03,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:03,483 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 13:59:03,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925929747] [2020-10-13 13:59:03,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:03,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:03,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982576824] [2020-10-13 13:59:03,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:03,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:03,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:03,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:03,487 INFO L87 Difference]: Start difference. First operand 3877 states and 6519 transitions. Second operand 5 states. [2020-10-13 13:59:03,886 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:59:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:05,944 INFO L93 Difference]: Finished difference Result 14443 states and 24294 transitions. [2020-10-13 13:59:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:59:05,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 13:59:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:05,996 INFO L225 Difference]: With dead ends: 14443 [2020-10-13 13:59:05,996 INFO L226 Difference]: Without dead ends: 10921 [2020-10-13 13:59:06,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:59:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2020-10-13 13:59:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 7369. [2020-10-13 13:59:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7369 states. [2020-10-13 13:59:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 12371 transitions. [2020-10-13 13:59:06,600 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 12371 transitions. Word has length 118 [2020-10-13 13:59:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:06,601 INFO L479 AbstractCegarLoop]: Abstraction has 7369 states and 12371 transitions. [2020-10-13 13:59:06,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 12371 transitions. [2020-10-13 13:59:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:59:06,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:06,604 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] [2020-10-13 13:59:06,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:59:06,607 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash -686071726, now seen corresponding path program 1 times [2020-10-13 13:59:06,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:06,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039843080] [2020-10-13 13:59:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:11,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:11,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:59:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:59:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:59:11,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 13:59:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:59:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:12,057 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:59:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:59:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:12,107 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 13:59:12,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039843080] [2020-10-13 13:59:12,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:12,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:12,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646884409] [2020-10-13 13:59:12,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:12,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:12,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:12,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:12,109 INFO L87 Difference]: Start difference. First operand 7369 states and 12371 transitions. Second operand 5 states. [2020-10-13 13:59:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:14,986 INFO L93 Difference]: Finished difference Result 20588 states and 34551 transitions. [2020-10-13 13:59:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:14,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 13:59:14,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:15,026 INFO L225 Difference]: With dead ends: 20588 [2020-10-13 13:59:15,026 INFO L226 Difference]: Without dead ends: 13574 [2020-10-13 13:59:15,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2020-10-13 13:59:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 13460. [2020-10-13 13:59:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13460 states. [2020-10-13 13:59:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13460 states to 13460 states and 22412 transitions. [2020-10-13 13:59:16,079 INFO L78 Accepts]: Start accepts. Automaton has 13460 states and 22412 transitions. Word has length 120 [2020-10-13 13:59:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:16,080 INFO L479 AbstractCegarLoop]: Abstraction has 13460 states and 22412 transitions. [2020-10-13 13:59:16,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13460 states and 22412 transitions. [2020-10-13 13:59:16,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:59:16,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:16,084 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] [2020-10-13 13:59:16,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:59:16,084 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:16,085 INFO L82 PathProgramCache]: Analyzing trace with hash 231089215, now seen corresponding path program 1 times [2020-10-13 13:59:16,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:16,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556941503] [2020-10-13 13:59:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:21,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:59:21,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:59:21,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:59:21,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 13:59:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:59:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:21,514 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:59:21,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:21,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:21,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:59:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:21,552 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 13:59:21,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556941503] [2020-10-13 13:59:21,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:21,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:21,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689950315] [2020-10-13 13:59:21,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:21,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:21,554 INFO L87 Difference]: Start difference. First operand 13460 states and 22412 transitions. Second operand 4 states. [2020-10-13 13:59:21,950 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:59:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:25,245 INFO L93 Difference]: Finished difference Result 37358 states and 62248 transitions. [2020-10-13 13:59:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:25,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 13:59:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:25,313 INFO L225 Difference]: With dead ends: 37358 [2020-10-13 13:59:25,313 INFO L226 Difference]: Without dead ends: 24109 [2020-10-13 13:59:25,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24109 states. [2020-10-13 13:59:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24109 to 24107. [2020-10-13 13:59:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24107 states. [2020-10-13 13:59:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24107 states to 24107 states and 40064 transitions. [2020-10-13 13:59:27,471 INFO L78 Accepts]: Start accepts. Automaton has 24107 states and 40064 transitions. Word has length 120 [2020-10-13 13:59:27,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:27,471 INFO L479 AbstractCegarLoop]: Abstraction has 24107 states and 40064 transitions. [2020-10-13 13:59:27,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 24107 states and 40064 transitions. [2020-10-13 13:59:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:59:27,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:27,473 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] [2020-10-13 13:59:27,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:59:27,473 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash 140817538, now seen corresponding path program 1 times [2020-10-13 13:59:27,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:27,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570123060] [2020-10-13 13:59:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 13:59:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:59:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:32,903 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:59:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:32,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:32,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:59:32,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:32,940 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 13:59:32,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570123060] [2020-10-13 13:59:32,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:32,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:32,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014362034] [2020-10-13 13:59:32,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:32,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:32,943 INFO L87 Difference]: Start difference. First operand 24107 states and 40064 transitions. Second operand 5 states. [2020-10-13 13:59:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:37,037 INFO L93 Difference]: Finished difference Result 68449 states and 113788 transitions. [2020-10-13 13:59:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:37,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 13:59:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:37,126 INFO L225 Difference]: With dead ends: 68449 [2020-10-13 13:59:37,126 INFO L226 Difference]: Without dead ends: 44661 [2020-10-13 13:59:37,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44661 states. [2020-10-13 13:59:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44661 to 44211. [2020-10-13 13:59:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44211 states. [2020-10-13 13:59:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44211 states to 44211 states and 73128 transitions. [2020-10-13 13:59:40,259 INFO L78 Accepts]: Start accepts. Automaton has 44211 states and 73128 transitions. Word has length 120 [2020-10-13 13:59:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:40,260 INFO L479 AbstractCegarLoop]: Abstraction has 44211 states and 73128 transitions. [2020-10-13 13:59:40,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 44211 states and 73128 transitions. [2020-10-13 13:59:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:59:40,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:40,263 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] [2020-10-13 13:59:40,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:59:40,263 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash 845757991, now seen corresponding path program 1 times [2020-10-13 13:59:40,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:40,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296536128] [2020-10-13 13:59:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:45,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:45,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:59:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:45,660 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:59:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:45,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:45,691 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 13:59:45,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296536128] [2020-10-13 13:59:45,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:45,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:45,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53905449] [2020-10-13 13:59:45,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:45,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:45,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:45,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:45,693 INFO L87 Difference]: Start difference. First operand 44211 states and 73128 transitions. Second operand 4 states. [2020-10-13 13:59:46,290 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:59:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:51,992 INFO L93 Difference]: Finished difference Result 123261 states and 204020 transitions. [2020-10-13 13:59:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:51,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 13:59:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:52,119 INFO L225 Difference]: With dead ends: 123261 [2020-10-13 13:59:52,119 INFO L226 Difference]: Without dead ends: 79327 [2020-10-13 13:59:52,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79327 states. [2020-10-13 13:59:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79327 to 79325. [2020-10-13 13:59:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79325 states. [2020-10-13 13:59:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79325 states to 79325 states and 130890 transitions. [2020-10-13 13:59:58,014 INFO L78 Accepts]: Start accepts. Automaton has 79325 states and 130890 transitions. Word has length 120 [2020-10-13 13:59:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:58,015 INFO L479 AbstractCegarLoop]: Abstraction has 79325 states and 130890 transitions. [2020-10-13 13:59:58,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 79325 states and 130890 transitions. [2020-10-13 13:59:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:59:58,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:58,017 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] [2020-10-13 13:59:58,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:59:58,017 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 286337891, now seen corresponding path program 1 times [2020-10-13 13:59:58,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:58,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479266056] [2020-10-13 13:59:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:03,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 14:00:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:03,415 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:00:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:03,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:03,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:03,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:00:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:03,464 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 14:00:03,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479266056] [2020-10-13 14:00:03,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:03,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:03,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052732974] [2020-10-13 14:00:03,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:03,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:03,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:03,466 INFO L87 Difference]: Start difference. First operand 79325 states and 130890 transitions. Second operand 4 states. [2020-10-13 14:00:03,868 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:00:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:14,235 INFO L93 Difference]: Finished difference Result 212737 states and 350476 transitions. [2020-10-13 14:00:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:14,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:00:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:14,441 INFO L225 Difference]: With dead ends: 212737 [2020-10-13 14:00:14,442 INFO L226 Difference]: Without dead ends: 133691 [2020-10-13 14:00:14,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133691 states. [2020-10-13 14:00:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133691 to 133632. [2020-10-13 14:00:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133632 states. [2020-10-13 14:00:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133632 states to 133632 states and 219051 transitions. [2020-10-13 14:00:23,719 INFO L78 Accepts]: Start accepts. Automaton has 133632 states and 219051 transitions. Word has length 120 [2020-10-13 14:00:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:23,720 INFO L479 AbstractCegarLoop]: Abstraction has 133632 states and 219051 transitions. [2020-10-13 14:00:23,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 133632 states and 219051 transitions. [2020-10-13 14:00:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:00:23,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:23,721 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] [2020-10-13 14:00:23,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:00:23,722 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 142676029, now seen corresponding path program 1 times [2020-10-13 14:00:23,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:23,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686924721] [2020-10-13 14:00:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3207 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:00:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:27,328 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:00:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:27,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:00:27,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:27,364 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 14:00:27,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686924721] [2020-10-13 14:00:27,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:27,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:27,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435643630] [2020-10-13 14:00:27,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:27,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:27,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:27,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:27,367 INFO L87 Difference]: Start difference. First operand 133632 states and 219051 transitions. Second operand 4 states. [2020-10-13 14:00:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:37,778 INFO L93 Difference]: Finished difference Result 298392 states and 488347 transitions. [2020-10-13 14:00:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:00:37,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:00:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:38,018 INFO L225 Difference]: With dead ends: 298392 [2020-10-13 14:00:38,018 INFO L226 Difference]: Without dead ends: 164982 [2020-10-13 14:00:38,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164982 states. [2020-10-13 14:00:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164982 to 132108. [2020-10-13 14:00:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132108 states. [2020-10-13 14:00:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132108 states to 132108 states and 216001 transitions. [2020-10-13 14:00:48,688 INFO L78 Accepts]: Start accepts. Automaton has 132108 states and 216001 transitions. Word has length 120 [2020-10-13 14:00:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:48,689 INFO L479 AbstractCegarLoop]: Abstraction has 132108 states and 216001 transitions. [2020-10-13 14:00:48,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 132108 states and 216001 transitions. [2020-10-13 14:00:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:00:48,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:48,691 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] [2020-10-13 14:00:48,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:00:48,691 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:48,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1151918923, now seen corresponding path program 1 times [2020-10-13 14:00:48,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:48,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139048286] [2020-10-13 14:00:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:00:53,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:00:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 14:00:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 14:00:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 14:00:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:54,138 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:00:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:54,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:54,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:54,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:54,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:00:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:54,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139048286] [2020-10-13 14:00:54,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:54,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:54,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825109963] [2020-10-13 14:00:54,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:54,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:54,172 INFO L87 Difference]: Start difference. First operand 132108 states and 216001 transitions. Second operand 4 states. [2020-10-13 14:00:54,543 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:01:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:12,058 INFO L93 Difference]: Finished difference Result 346576 states and 564803 transitions. [2020-10-13 14:01:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:12,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:01:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:12,411 INFO L225 Difference]: With dead ends: 346576 [2020-10-13 14:01:12,411 INFO L226 Difference]: Without dead ends: 214682 [2020-10-13 14:01:12,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214682 states. [2020-10-13 14:01:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214682 to 214659. [2020-10-13 14:01:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214659 states. [2020-10-13 14:01:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214659 states to 214659 states and 347322 transitions. [2020-10-13 14:01:28,429 INFO L78 Accepts]: Start accepts. Automaton has 214659 states and 347322 transitions. Word has length 120 [2020-10-13 14:01:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:28,429 INFO L479 AbstractCegarLoop]: Abstraction has 214659 states and 347322 transitions. [2020-10-13 14:01:28,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:01:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 214659 states and 347322 transitions. [2020-10-13 14:01:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 14:01:28,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:28,430 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] [2020-10-13 14:01:28,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:01:28,431 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1113344252, now seen corresponding path program 1 times [2020-10-13 14:01:28,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:28,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500408288] [2020-10-13 14:01:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:29,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:30,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 14:01:30,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:01:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-10-13 14:01:30,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:01:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:01:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:01:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:30,353 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 14:01:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:30,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:30,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:30,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:01:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:30,398 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 14:01:30,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500408288] [2020-10-13 14:01:30,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:30,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:01:30,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475787491] [2020-10-13 14:01:30,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:01:30,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:30,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:01:30,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:30,401 INFO L87 Difference]: Start difference. First operand 214659 states and 347322 transitions. Second operand 4 states. [2020-10-13 14:01:30,780 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 14:01:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:51,128 INFO L93 Difference]: Finished difference Result 462656 states and 748925 transitions. [2020-10-13 14:01:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:51,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-13 14:01:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:51,520 INFO L225 Difference]: With dead ends: 462656 [2020-10-13 14:01:51,521 INFO L226 Difference]: Without dead ends: 248190 [2020-10-13 14:01:51,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20