/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:24:40,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:24:40,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:24:40,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:24:40,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:24:40,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:24:40,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:24:40,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:24:40,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:24:40,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:24:40,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:24:40,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:24:40,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:24:40,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:24:40,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:24:40,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:24:40,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:24:40,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:24:40,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:24:40,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:24:40,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:24:40,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:24:40,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:24:40,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:24:40,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:24:40,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:24:40,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:24:40,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:24:40,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:24:40,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:24:40,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:24:40,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:24:40,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:24:40,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:24:40,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:24:40,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:24:40,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:24:40,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:24:40,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:24:40,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:24:40,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:24:40,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:24:40,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:24:40,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:24:40,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:24:40,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:24:40,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:24:40,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:24:40,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:24:40,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:24:40,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:24:40,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:24:40,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:24:40,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:24:40,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:24:40,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:24:40,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:24:40,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:24:40,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:24:40,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:24:40,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:24:40,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:24:40,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:24:40,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:24:40,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:24:40,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:24:40,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:24:40,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:24:40,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:24:40,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:24:40,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:24:40,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:24:40,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:24:40,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:24:40,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:24:40,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:24:40,608 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:24:40,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:24:40,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bdc99948/c5b716018d6347008c60aec460954879/FLAG38b088869 [2020-10-12 19:24:41,359 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:24:41,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:24:41,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bdc99948/c5b716018d6347008c60aec460954879/FLAG38b088869 [2020-10-12 19:24:41,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bdc99948/c5b716018d6347008c60aec460954879 [2020-10-12 19:24:41,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:24:41,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:24:41,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:24:41,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:24:41,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:24:41,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:24:41" (1/1) ... [2020-10-12 19:24:41,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0aa04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:41, skipping insertion in model container [2020-10-12 19:24:41,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:24:41" (1/1) ... [2020-10-12 19:24:41,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:24:41,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:24:43,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:24:43,106 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:24:44,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:24:44,504 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:24:44,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44 WrapperNode [2020-10-12 19:24:44,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:24:44,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:24:44,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:24:44,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:24:44,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... [2020-10-12 19:24:44,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:24:44,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:24:44,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:24:44,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:24:44,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:24:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:24:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:24:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:24:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:24:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:24:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:24:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:24:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:24:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:24:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:24:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:24:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:24:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:24:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:24:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:24:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:24:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:24:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:24:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:24:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:24:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:24:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:24:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:24:48,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:24:48,202 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:24:48,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:24:48 BoogieIcfgContainer [2020-10-12 19:24:48,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:24:48,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:24:48,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:24:48,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:24:48,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:24:41" (1/3) ... [2020-10-12 19:24:48,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494393a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:24:48, skipping insertion in model container [2020-10-12 19:24:48,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:44" (2/3) ... [2020-10-12 19:24:48,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494393a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:24:48, skipping insertion in model container [2020-10-12 19:24:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:24:48" (3/3) ... [2020-10-12 19:24:48,221 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:24:48,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:24:48,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:24:48,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:24:48,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:24:48,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:24:48,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:24:48,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:24:48,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:24:48,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:24:48,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:24:48,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:24:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states. [2020-10-12 19:24:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-12 19:24:48,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:48,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:24:48,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:48,404 INFO L82 PathProgramCache]: Analyzing trace with hash -866812329, now seen corresponding path program 1 times [2020-10-12 19:24:48,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:48,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992235770] [2020-10-12 19:24:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:54,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-12 19:24:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:24:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5293 [2020-10-12 19:24:54,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:24:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:24:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-12 19:24:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:24:56,502 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:24:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:56,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:56,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:56,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:56,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 19:24:56,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:57,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992235770] [2020-10-12 19:24:57,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:57,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:24:57,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051281020] [2020-10-12 19:24:57,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:24:57,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:57,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:24:57,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:24:57,126 INFO L87 Difference]: Start difference. First operand 1340 states. Second operand 5 states. [2020-10-12 19:25:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:13,760 INFO L93 Difference]: Finished difference Result 3968 states and 7153 transitions. [2020-10-12 19:25:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:25:13,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-10-12 19:25:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:13,802 INFO L225 Difference]: With dead ends: 3968 [2020-10-12 19:25:13,802 INFO L226 Difference]: Without dead ends: 2635 [2020-10-12 19:25:13,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2020-10-12 19:25:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2633. [2020-10-12 19:25:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-10-12 19:25:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4313 transitions. [2020-10-12 19:25:14,049 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4313 transitions. Word has length 476 [2020-10-12 19:25:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:14,051 INFO L479 AbstractCegarLoop]: Abstraction has 2633 states and 4313 transitions. [2020-10-12 19:25:14,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4313 transitions. [2020-10-12 19:25:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-12 19:25:14,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:14,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:14,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:25:14,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:14,068 INFO L82 PathProgramCache]: Analyzing trace with hash 907564472, now seen corresponding path program 1 times [2020-10-12 19:25:14,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:14,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025833808] [2020-10-12 19:25:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:14,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:19,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:19,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-12 19:25:19,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:25:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 19:25:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-12 19:25:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:20,276 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:25:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:20,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:20,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:20,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:20,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:25:20,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:25:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025833808] [2020-10-12 19:25:21,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:21,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:21,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18596614] [2020-10-12 19:25:21,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:21,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:21,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:21,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:21,063 INFO L87 Difference]: Start difference. First operand 2633 states and 4313 transitions. Second operand 5 states. [2020-10-12 19:25:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:35,553 INFO L93 Difference]: Finished difference Result 7711 states and 12611 transitions. [2020-10-12 19:25:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:35,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 478 [2020-10-12 19:25:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:35,582 INFO L225 Difference]: With dead ends: 7711 [2020-10-12 19:25:35,582 INFO L226 Difference]: Without dead ends: 5151 [2020-10-12 19:25:35,588 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 19:25:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2020-10-12 19:25:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 5149. [2020-10-12 19:25:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2020-10-12 19:25:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8386 transitions. [2020-10-12 19:25:35,798 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8386 transitions. Word has length 478 [2020-10-12 19:25:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:35,800 INFO L479 AbstractCegarLoop]: Abstraction has 5149 states and 8386 transitions. [2020-10-12 19:25:35,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8386 transitions. [2020-10-12 19:25:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-12 19:25:35,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:35,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:35,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:25:35,825 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:35,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1581036535, now seen corresponding path program 1 times [2020-10-12 19:25:35,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:35,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870424823] [2020-10-12 19:25:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:36,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:41,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:41,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-12 19:25:41,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:25:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:25:41,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-12 19:25:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:42,019 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:25:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:25:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:42,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870424823] [2020-10-12 19:25:42,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:42,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:42,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535935966] [2020-10-12 19:25:42,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:42,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:42,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:42,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:42,640 INFO L87 Difference]: Start difference. First operand 5149 states and 8386 transitions. Second operand 5 states. [2020-10-12 19:25:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:56,448 INFO L93 Difference]: Finished difference Result 15114 states and 24585 transitions. [2020-10-12 19:25:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:56,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 480 [2020-10-12 19:25:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:56,495 INFO L225 Difference]: With dead ends: 15114 [2020-10-12 19:25:56,495 INFO L226 Difference]: Without dead ends: 10180 [2020-10-12 19:25:56,505 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 19:25:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10180 states. [2020-10-12 19:25:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10180 to 10178. [2020-10-12 19:25:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10178 states. [2020-10-12 19:25:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10178 states to 10178 states and 16511 transitions. [2020-10-12 19:25:57,014 INFO L78 Accepts]: Start accepts. Automaton has 10178 states and 16511 transitions. Word has length 480 [2020-10-12 19:25:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:57,014 INFO L479 AbstractCegarLoop]: Abstraction has 10178 states and 16511 transitions. [2020-10-12 19:25:57,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10178 states and 16511 transitions. [2020-10-12 19:25:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-12 19:25:57,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:57,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:57,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:25:57,055 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash -103280983, now seen corresponding path program 1 times [2020-10-12 19:25:57,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:57,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569943368] [2020-10-12 19:25:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-12 19:26:02,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:26:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 19:26:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 19:26:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:03,220 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:26:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:03,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:03,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 19:26:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:03,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569943368] [2020-10-12 19:26:03,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:03,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:03,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470872941] [2020-10-12 19:26:03,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:03,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:03,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:03,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:03,614 INFO L87 Difference]: Start difference. First operand 10178 states and 16511 transitions. Second operand 5 states. [2020-10-12 19:26:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:17,580 INFO L93 Difference]: Finished difference Result 30111 states and 48811 transitions. [2020-10-12 19:26:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:17,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 484 [2020-10-12 19:26:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:17,641 INFO L225 Difference]: With dead ends: 30111 [2020-10-12 19:26:17,641 INFO L226 Difference]: Without dead ends: 20063 [2020-10-12 19:26:17,661 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 19:26:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20063 states. [2020-10-12 19:26:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20063 to 20061. [2020-10-12 19:26:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20061 states. [2020-10-12 19:26:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20061 states to 20061 states and 32375 transitions. [2020-10-12 19:26:18,804 INFO L78 Accepts]: Start accepts. Automaton has 20061 states and 32375 transitions. Word has length 484 [2020-10-12 19:26:18,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:18,805 INFO L479 AbstractCegarLoop]: Abstraction has 20061 states and 32375 transitions. [2020-10-12 19:26:18,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 20061 states and 32375 transitions. [2020-10-12 19:26:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-12 19:26:18,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:18,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:18,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:26:18,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1770759349, now seen corresponding path program 1 times [2020-10-12 19:26:18,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:18,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825902485] [2020-10-12 19:26:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-12 19:26:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 19:26:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 19:26:23,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-12 19:26:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:24,904 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:26:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:26:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:25,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825902485] [2020-10-12 19:26:25,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:25,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:25,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181695527] [2020-10-12 19:26:25,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:25,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:25,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:25,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:25,326 INFO L87 Difference]: Start difference. First operand 20061 states and 32375 transitions. Second operand 5 states. [2020-10-12 19:26:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:40,004 INFO L93 Difference]: Finished difference Result 59427 states and 95841 transitions. [2020-10-12 19:26:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:40,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2020-10-12 19:26:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:40,099 INFO L225 Difference]: With dead ends: 59427 [2020-10-12 19:26:40,099 INFO L226 Difference]: Without dead ends: 39589 [2020-10-12 19:26:40,153 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 19:26:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39589 states. [2020-10-12 19:26:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39589 to 39587. [2020-10-12 19:26:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39587 states. [2020-10-12 19:26:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39587 states to 39587 states and 63557 transitions. [2020-10-12 19:26:42,940 INFO L78 Accepts]: Start accepts. Automaton has 39587 states and 63557 transitions. Word has length 487 [2020-10-12 19:26:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:42,941 INFO L479 AbstractCegarLoop]: Abstraction has 39587 states and 63557 transitions. [2020-10-12 19:26:42,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 39587 states and 63557 transitions. [2020-10-12 19:26:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-12 19:26:43,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:43,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:43,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:26:43,024 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:43,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1686970493, now seen corresponding path program 1 times [2020-10-12 19:26:43,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:43,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897084777] [2020-10-12 19:26:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:48,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-12 19:26:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:49,112 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:26:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:49,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:49,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:49,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:26:49,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:49,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897084777] [2020-10-12 19:26:49,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:49,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:49,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245573666] [2020-10-12 19:26:49,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:49,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:49,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:49,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:49,393 INFO L87 Difference]: Start difference. First operand 39587 states and 63557 transitions. Second operand 5 states. [2020-10-12 19:27:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:06,752 INFO L93 Difference]: Finished difference Result 116907 states and 187641 transitions. [2020-10-12 19:27:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:06,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2020-10-12 19:27:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:06,945 INFO L225 Difference]: With dead ends: 116907 [2020-10-12 19:27:06,945 INFO L226 Difference]: Without dead ends: 78153 [2020-10-12 19:27:07,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:27:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78153 states. [2020-10-12 19:27:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78153 to 78151. [2020-10-12 19:27:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78151 states. [2020-10-12 19:27:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78151 states to 78151 states and 124903 transitions. [2020-10-12 19:27:11,138 INFO L78 Accepts]: Start accepts. Automaton has 78151 states and 124903 transitions. Word has length 489 [2020-10-12 19:27:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:11,139 INFO L479 AbstractCegarLoop]: Abstraction has 78151 states and 124903 transitions. [2020-10-12 19:27:11,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:27:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 78151 states and 124903 transitions. [2020-10-12 19:27:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-12 19:27:11,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:11,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:27:11,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:27:11,217 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:11,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1046117018, now seen corresponding path program 1 times [2020-10-12 19:27:11,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:11,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219618382] [2020-10-12 19:27:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:13,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:16,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:17,174 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:27:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:17,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219618382] [2020-10-12 19:27:17,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:17,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:17,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872253419] [2020-10-12 19:27:17,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:17,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:17,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:17,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:17,502 INFO L87 Difference]: Start difference. First operand 78151 states and 124903 transitions. Second operand 5 states. [2020-10-12 19:27:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:38,619 INFO L93 Difference]: Finished difference Result 217879 states and 345983 transitions. [2020-10-12 19:27:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:38,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2020-10-12 19:27:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:38,882 INFO L225 Difference]: With dead ends: 217879 [2020-10-12 19:27:38,883 INFO L226 Difference]: Without dead ends: 149397 [2020-10-12 19:27:38,970 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 19:27:39,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149397 states. [2020-10-12 19:27:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149397 to 86175. [2020-10-12 19:27:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86175 states. [2020-10-12 19:27:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86175 states to 86175 states and 139139 transitions. [2020-10-12 19:27:46,434 INFO L78 Accepts]: Start accepts. Automaton has 86175 states and 139139 transitions. Word has length 494 [2020-10-12 19:27:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:46,435 INFO L479 AbstractCegarLoop]: Abstraction has 86175 states and 139139 transitions. [2020-10-12 19:27:46,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:27:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 86175 states and 139139 transitions. [2020-10-12 19:27:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-12 19:27:46,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:46,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:27:46,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:27:46,527 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:46,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1402182411, now seen corresponding path program 1 times [2020-10-12 19:27:46,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:46,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947137638] [2020-10-12 19:27:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:51,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:27:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:52,544 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 19:27:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:52,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:27:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:52,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947137638] [2020-10-12 19:27:52,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:52,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:52,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989211242] [2020-10-12 19:27:52,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:52,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:52,733 INFO L87 Difference]: Start difference. First operand 86175 states and 139139 transitions. Second operand 5 states.