/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:23:54,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:23:54,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:23:54,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:23:54,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:23:54,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:23:54,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:23:54,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:23:54,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:23:54,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:23:54,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:23:54,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:23:54,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:23:54,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:23:54,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:23:54,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:23:54,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:23:54,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:23:54,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:23:54,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:23:54,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:23:54,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:23:54,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:23:54,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:23:54,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:23:54,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:23:54,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:23:54,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:23:54,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:23:54,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:23:54,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:23:54,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:23:54,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:23:54,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:23:54,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:23:54,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:23:54,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:23:54,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:23:54,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:23:54,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:23:54,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:23:54,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:23:54,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:23:54,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:23:54,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:23:54,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:23:54,248 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:23:54,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:23:54,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:23:54,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:23:54,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:23:54,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:23:54,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:23:54,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:23:54,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:23:54,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:23:54,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:23:54,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:23:54,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:23:54,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:23:54,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:23:54,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:23:54,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:23:54,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:23:54,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:23:54,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:23:54,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:23:54,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:23:54,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:23:54,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:23:54,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:23:54,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:23:54,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:23:54,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:23:54,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:23:54,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:23:54,568 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:23:54,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:23:54,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/839010492/3acaaa7d3a294a06a523f9c90d3e794e/FLAG227f2e1d1 [2020-10-12 20:23:55,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:23:55,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:23:55,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/839010492/3acaaa7d3a294a06a523f9c90d3e794e/FLAG227f2e1d1 [2020-10-12 20:23:55,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/839010492/3acaaa7d3a294a06a523f9c90d3e794e [2020-10-12 20:23:55,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:23:55,475 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:23:55,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:23:55,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:23:55,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:23:55,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:23:55" (1/1) ... [2020-10-12 20:23:55,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c39f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:55, skipping insertion in model container [2020-10-12 20:23:55,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:23:55" (1/1) ... [2020-10-12 20:23:55,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:23:55,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:23:57,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:23:57,082 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:23:58,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:23:58,243 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:23:58,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58 WrapperNode [2020-10-12 20:23:58,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:23:58,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:23:58,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:23:58,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:23:58,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... [2020-10-12 20:23:58,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:23:58,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:23:58,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:23:58,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:23:58,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:23:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:23:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:23:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:23:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:23:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:23:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:23:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:23:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:23:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:23:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:23:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:23:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:23:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:23:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:23:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:23:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:23:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:23:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:23:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:23:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:23:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:23:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:24:01,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:24:01,600 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:24:01,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:24:01 BoogieIcfgContainer [2020-10-12 20:24:01,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:24:01,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:24:01,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:24:01,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:24:01,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:23:55" (1/3) ... [2020-10-12 20:24:01,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a6d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:24:01, skipping insertion in model container [2020-10-12 20:24:01,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:23:58" (2/3) ... [2020-10-12 20:24:01,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a6d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:24:01, skipping insertion in model container [2020-10-12 20:24:01,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:24:01" (3/3) ... [2020-10-12 20:24:01,620 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:24:01,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:24:01,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-12 20:24:01,654 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-12 20:24:01,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:24:01,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:24:01,683 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:24:01,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:24:01,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:24:01,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:24:01,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:24:01,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:24:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-10-12 20:24:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 20:24:01,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:01,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:01,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:01,765 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-10-12 20:24:01,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:01,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753731773] [2020-10-12 20:24:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:07,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:07,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 20:24:07,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:24:07,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-12 20:24:07,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:24:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:24:08,565 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:24:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:08,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:08,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:08,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:24:08,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:08,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:08,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:08,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753731773] [2020-10-12 20:24:08,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:08,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:08,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320065625] [2020-10-12 20:24:08,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:08,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:08,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:08,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:08,904 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 5 states. [2020-10-12 20:24:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:19,838 INFO L93 Difference]: Finished difference Result 2959 states and 5295 transitions. [2020-10-12 20:24:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:24:19,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 20:24:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:19,885 INFO L225 Difference]: With dead ends: 2959 [2020-10-12 20:24:19,885 INFO L226 Difference]: Without dead ends: 1964 [2020-10-12 20:24:19,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:19,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-10-12 20:24:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1898. [2020-10-12 20:24:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-12 20:24:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2887 transitions. [2020-10-12 20:24:20,104 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2887 transitions. Word has length 324 [2020-10-12 20:24:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:20,105 INFO L479 AbstractCegarLoop]: Abstraction has 1898 states and 2887 transitions. [2020-10-12 20:24:20,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2887 transitions. [2020-10-12 20:24:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 20:24:20,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:20,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:20,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:24:20,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash -505425275, now seen corresponding path program 1 times [2020-10-12 20:24:20,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:20,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862050835] [2020-10-12 20:24:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:22,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:25,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:25,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 20:24:25,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:24:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:24:25,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-12 20:24:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:26,155 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:24:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:26,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:26,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:26,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:24:26,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:24:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:26,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862050835] [2020-10-12 20:24:26,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:26,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:26,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146724358] [2020-10-12 20:24:26,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:26,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:26,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:26,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:26,674 INFO L87 Difference]: Start difference. First operand 1898 states and 2887 transitions. Second operand 5 states. [2020-10-12 20:24:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:36,612 INFO L93 Difference]: Finished difference Result 5613 states and 8528 transitions. [2020-10-12 20:24:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:36,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-12 20:24:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:36,640 INFO L225 Difference]: With dead ends: 5613 [2020-10-12 20:24:36,640 INFO L226 Difference]: Without dead ends: 3728 [2020-10-12 20:24:36,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2020-10-12 20:24:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3604. [2020-10-12 20:24:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3604 states. [2020-10-12 20:24:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 5470 transitions. [2020-10-12 20:24:36,846 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 5470 transitions. Word has length 326 [2020-10-12 20:24:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:36,849 INFO L479 AbstractCegarLoop]: Abstraction has 3604 states and 5470 transitions. [2020-10-12 20:24:36,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 5470 transitions. [2020-10-12 20:24:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 20:24:36,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:36,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:36,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:24:36,860 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1940385115, now seen corresponding path program 1 times [2020-10-12 20:24:36,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:36,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067451603] [2020-10-12 20:24:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 20:24:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:24:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 20:24:41,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 20:24:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:24:42,797 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:24:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:42,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:42,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:42,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:24:42,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:42,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:43,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067451603] [2020-10-12 20:24:43,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:43,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:43,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983310599] [2020-10-12 20:24:43,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:43,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:43,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:43,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:43,027 INFO L87 Difference]: Start difference. First operand 3604 states and 5470 transitions. Second operand 5 states. [2020-10-12 20:24:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:52,582 INFO L93 Difference]: Finished difference Result 10535 states and 15934 transitions. [2020-10-12 20:24:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:52,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-12 20:24:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:52,618 INFO L225 Difference]: With dead ends: 10535 [2020-10-12 20:24:52,619 INFO L226 Difference]: Without dead ends: 7071 [2020-10-12 20:24:52,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2020-10-12 20:24:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 6933. [2020-10-12 20:24:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6933 states. [2020-10-12 20:24:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6933 states to 6933 states and 10468 transitions. [2020-10-12 20:24:52,915 INFO L78 Accepts]: Start accepts. Automaton has 6933 states and 10468 transitions. Word has length 328 [2020-10-12 20:24:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:52,918 INFO L479 AbstractCegarLoop]: Abstraction has 6933 states and 10468 transitions. [2020-10-12 20:24:52,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6933 states and 10468 transitions. [2020-10-12 20:24:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 20:24:52,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:52,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:52,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:24:52,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1778165999, now seen corresponding path program 1 times [2020-10-12 20:24:52,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:52,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544163587] [2020-10-12 20:24:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:58,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:58,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 20:24:58,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:24:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:24:58,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 20:24:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:58,648 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:24:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:58,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:58,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:58,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:58,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:24:58,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:58,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:58,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544163587] [2020-10-12 20:24:58,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:58,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:58,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134600168] [2020-10-12 20:24:58,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:58,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:58,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:58,823 INFO L87 Difference]: Start difference. First operand 6933 states and 10468 transitions. Second operand 5 states. [2020-10-12 20:25:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:07,680 INFO L93 Difference]: Finished difference Result 20123 states and 30250 transitions. [2020-10-12 20:25:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:07,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-12 20:25:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:07,734 INFO L225 Difference]: With dead ends: 20123 [2020-10-12 20:25:07,734 INFO L226 Difference]: Without dead ends: 13465 [2020-10-12 20:25:07,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13465 states. [2020-10-12 20:25:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13465 to 13327. [2020-10-12 20:25:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13327 states. [2020-10-12 20:25:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13327 states to 13327 states and 19972 transitions. [2020-10-12 20:25:08,234 INFO L78 Accepts]: Start accepts. Automaton has 13327 states and 19972 transitions. Word has length 330 [2020-10-12 20:25:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:08,235 INFO L479 AbstractCegarLoop]: Abstraction has 13327 states and 19972 transitions. [2020-10-12 20:25:08,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13327 states and 19972 transitions. [2020-10-12 20:25:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-12 20:25:08,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:08,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:25:08,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:25:08,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:08,266 INFO L82 PathProgramCache]: Analyzing trace with hash 532562388, now seen corresponding path program 1 times [2020-10-12 20:25:08,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:08,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048986817] [2020-10-12 20:25:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:09,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:13,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:13,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:25:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:13,981 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:25:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:14,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:14,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:14,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:25:14,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:14,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048986817] [2020-10-12 20:25:14,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:14,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:14,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115313112] [2020-10-12 20:25:14,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:14,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:14,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:14,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:14,249 INFO L87 Difference]: Start difference. First operand 13327 states and 19972 transitions. Second operand 5 states. [2020-10-12 20:25:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:25,606 INFO L93 Difference]: Finished difference Result 39025 states and 58305 transitions. [2020-10-12 20:25:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:25,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-12 20:25:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:25,665 INFO L225 Difference]: With dead ends: 39025 [2020-10-12 20:25:25,665 INFO L226 Difference]: Without dead ends: 26021 [2020-10-12 20:25:25,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26021 states. [2020-10-12 20:25:26,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26021 to 25943. [2020-10-12 20:25:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25943 states. [2020-10-12 20:25:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25943 states to 25943 states and 38549 transitions. [2020-10-12 20:25:26,790 INFO L78 Accepts]: Start accepts. Automaton has 25943 states and 38549 transitions. Word has length 332 [2020-10-12 20:25:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:26,790 INFO L479 AbstractCegarLoop]: Abstraction has 25943 states and 38549 transitions. [2020-10-12 20:25:26,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 25943 states and 38549 transitions. [2020-10-12 20:25:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-12 20:25:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:26,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:25:26,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:25:26,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 789071335, now seen corresponding path program 1 times [2020-10-12 20:25:26,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:26,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22138121] [2020-10-12 20:25:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:25:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 20:25:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:32,541 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:25:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:32,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:32,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:32,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:25:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:32,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22138121] [2020-10-12 20:25:32,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:32,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:32,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914356639] [2020-10-12 20:25:32,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:32,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:32,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:32,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:32,669 INFO L87 Difference]: Start difference. First operand 25943 states and 38549 transitions. Second operand 5 states. [2020-10-12 20:25:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:43,927 INFO L93 Difference]: Finished difference Result 76164 states and 112850 transitions. [2020-10-12 20:25:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:43,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-12 20:25:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:44,054 INFO L225 Difference]: With dead ends: 76164 [2020-10-12 20:25:44,054 INFO L226 Difference]: Without dead ends: 50646 [2020-10-12 20:25:44,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50646 states. [2020-10-12 20:25:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50646 to 50456. [2020-10-12 20:25:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50456 states. [2020-10-12 20:25:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50456 states to 50456 states and 74334 transitions. [2020-10-12 20:25:45,905 INFO L78 Accepts]: Start accepts. Automaton has 50456 states and 74334 transitions. Word has length 334 [2020-10-12 20:25:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:45,906 INFO L479 AbstractCegarLoop]: Abstraction has 50456 states and 74334 transitions. [2020-10-12 20:25:45,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 50456 states and 74334 transitions. [2020-10-12 20:25:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-12 20:25:45,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:45,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:25:45,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:25:45,969 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash -168285717, now seen corresponding path program 1 times [2020-10-12 20:25:45,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:45,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602958404] [2020-10-12 20:25:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-12 20:25:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:25:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 20:25:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 20:25:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:25:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:25:51,780 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:25:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:51,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:25:51,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:51,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602958404] [2020-10-12 20:25:51,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:51,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:51,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548787468] [2020-10-12 20:25:51,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:51,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:51,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:51,929 INFO L87 Difference]: Start difference. First operand 50456 states and 74334 transitions. Second operand 5 states. [2020-10-12 20:26:04,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:04,130 INFO L93 Difference]: Finished difference Result 138276 states and 202286 transitions. [2020-10-12 20:26:04,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:04,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-12 20:26:04,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:04,270 INFO L225 Difference]: With dead ends: 138276 [2020-10-12 20:26:04,270 INFO L226 Difference]: Without dead ends: 93286 [2020-10-12 20:26:04,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:26:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93286 states. [2020-10-12 20:26:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93286 to 54412. [2020-10-12 20:26:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54412 states. [2020-10-12 20:26:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54412 states to 54412 states and 81022 transitions. [2020-10-12 20:26:06,994 INFO L78 Accepts]: Start accepts. Automaton has 54412 states and 81022 transitions. Word has length 336 [2020-10-12 20:26:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:06,995 INFO L479 AbstractCegarLoop]: Abstraction has 54412 states and 81022 transitions. [2020-10-12 20:26:06,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 54412 states and 81022 transitions. [2020-10-12 20:26:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-12 20:26:07,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:07,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:26:07,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:26:07,046 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1267045757, now seen corresponding path program 1 times [2020-10-12 20:26:07,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:07,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899389144] [2020-10-12 20:26:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:12,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-12 20:26:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:26:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:26:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:26:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 20:26:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:12,736 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:26:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:12,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:12,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:12,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:26:12,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:12,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899389144] [2020-10-12 20:26:12,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:12,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:12,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611648814] [2020-10-12 20:26:12,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:12,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:12,874 INFO L87 Difference]: Start difference. First operand 54412 states and 81022 transitions. Second operand 5 states. [2020-10-12 20:26:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:28,596 INFO L93 Difference]: Finished difference Result 161035 states and 239413 transitions. [2020-10-12 20:26:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:26:28,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-10-12 20:26:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:28,740 INFO L225 Difference]: With dead ends: 161035 [2020-10-12 20:26:28,741 INFO L226 Difference]: Without dead ends: 106954 [2020-10-12 20:26:28,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:26:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106954 states. [2020-10-12 20:26:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106954 to 106764. [2020-10-12 20:26:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106764 states. [2020-10-12 20:26:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106764 states to 106764 states and 157936 transitions. [2020-10-12 20:26:33,489 INFO L78 Accepts]: Start accepts. Automaton has 106764 states and 157936 transitions. Word has length 338 [2020-10-12 20:26:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:33,489 INFO L479 AbstractCegarLoop]: Abstraction has 106764 states and 157936 transitions. [2020-10-12 20:26:33,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 106764 states and 157936 transitions. [2020-10-12 20:26:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-12 20:26:33,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:33,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:26:33,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:26:33,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:33,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:33,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1805899507, now seen corresponding path program 1 times [2020-10-12 20:26:33,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:33,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951036771] [2020-10-12 20:26:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:38,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:38,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-12 20:26:38,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:26:38,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:26:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:26:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 20:26:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:26:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:39,269 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:26:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:39,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:39,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:26:39,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:39,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951036771] [2020-10-12 20:26:39,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:39,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:26:39,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647234541] [2020-10-12 20:26:39,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:26:39,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:39,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:26:39,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:26:39,399 INFO L87 Difference]: Start difference. First operand 106764 states and 157936 transitions. Second operand 5 states. [2020-10-12 20:27:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:03,460 INFO L93 Difference]: Finished difference Result 310184 states and 457051 transitions. [2020-10-12 20:27:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:03,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-12 20:27:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:03,725 INFO L225 Difference]: With dead ends: 310184 [2020-10-12 20:27:03,725 INFO L226 Difference]: Without dead ends: 212642 [2020-10-12 20:27:03,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:27:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212642 states. [2020-10-12 20:27:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212642 to 117500. [2020-10-12 20:27:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117500 states. [2020-10-12 20:27:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117500 states to 117500 states and 175383 transitions. [2020-10-12 20:27:09,807 INFO L78 Accepts]: Start accepts. Automaton has 117500 states and 175383 transitions. Word has length 340 [2020-10-12 20:27:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:09,808 INFO L479 AbstractCegarLoop]: Abstraction has 117500 states and 175383 transitions. [2020-10-12 20:27:09,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 117500 states and 175383 transitions. [2020-10-12 20:27:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-12 20:27:09,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:09,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:27:09,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:27:09,900 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:09,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1645291528, now seen corresponding path program 1 times [2020-10-12 20:27:09,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:09,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651605723] [2020-10-12 20:27:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-12 20:27:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:27:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:27:14,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 20:27:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:27:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:27:15,599 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 20:27:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:15,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:15,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:27:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:15,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651605723] [2020-10-12 20:27:15,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:15,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:15,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445963688] [2020-10-12 20:27:15,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:15,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:15,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:15,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:15,700 INFO L87 Difference]: Start difference. First operand 117500 states and 175383 transitions. Second operand 5 states.