/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:09:43,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:09:43,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:09:43,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:09:43,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:09:43,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:09:43,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:09:43,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:09:43,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:09:43,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:09:43,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:09:43,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:09:43,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:09:43,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:09:43,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:09:43,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:09:43,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:09:43,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:09:43,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:09:43,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:09:43,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:09:43,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:09:43,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:09:43,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:09:43,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:09:43,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:09:43,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:09:43,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:09:43,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:09:43,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:09:43,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:09:43,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:09:43,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:09:43,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:09:43,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:09:43,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:09:43,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:09:43,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:09:43,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:09:43,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:09:43,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:09:43,464 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 [2020-10-15 03:09:43,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:09:43,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:09:43,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:09:43,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:09:43,507 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:09:43,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:09:43,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:09:43,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:09:43,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:09:43,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:09:43,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:09:43,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:09:43,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:09:43,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:09:43,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:09:43,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:09:43,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:09:43,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:09:43,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:09:43,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:09:43,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:09:43,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:09:43,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:09:43,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:09:43,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:09:43,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:09:43,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:09:43,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:09:43,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:09:43,513 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:09:43,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:09:43,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:09:43,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:09:43,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:09:43,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:09:43,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:09:43,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db3b06bc/f01c7342fe054c8cbc51e1af8125b1d0/FLAG512880426 [2020-10-15 03:09:44,770 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:09:44,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:09:44,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db3b06bc/f01c7342fe054c8cbc51e1af8125b1d0/FLAG512880426 [2020-10-15 03:09:45,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db3b06bc/f01c7342fe054c8cbc51e1af8125b1d0 [2020-10-15 03:09:45,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:09:45,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:09:45,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:09:45,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:09:45,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:09:45,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:45" (1/1) ... [2020-10-15 03:09:45,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:45, skipping insertion in model container [2020-10-15 03:09:45,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:45" (1/1) ... [2020-10-15 03:09:45,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:09:45,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:09:47,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:09:47,217 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:09:48,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:09:48,281 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:09:48,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48 WrapperNode [2020-10-15 03:09:48,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:09:48,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:09:48,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:09:48,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:09:48,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (1/1) ... [2020-10-15 03:09:48,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:09:48,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:09:48,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:09:48,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:09:48,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (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 [2020-10-15 03:09:48,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:09:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:09:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:09:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:09:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:09:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:09:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:09:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:09:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:09:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:09:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:09:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:09:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:09:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:09:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:09:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:09:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:09:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:09:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:09:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:09:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:09:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:09:52,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:09:52,599 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:09:52,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:52 BoogieIcfgContainer [2020-10-15 03:09:52,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:09:52,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:09:52,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:09:52,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:09:52,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:45" (1/3) ... [2020-10-15 03:09:52,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2a2a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:52, skipping insertion in model container [2020-10-15 03:09:52,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:48" (2/3) ... [2020-10-15 03:09:52,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2a2a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:52, skipping insertion in model container [2020-10-15 03:09:52,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:52" (3/3) ... [2020-10-15 03:09:52,629 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:09:52,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:09:52,661 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:09:52,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:09:52,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:09:52,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:09:52,721 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:09:52,721 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:09:52,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:09:52,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:09:52,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:09:52,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:09:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states. [2020-10-15 03:09:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-15 03:09:52,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:52,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:09:52,807 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:52,815 INFO L82 PathProgramCache]: Analyzing trace with hash -191467784, now seen corresponding path program 1 times [2020-10-15 03:09:52,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:52,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364782925] [2020-10-15 03:09:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:59,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:59,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-15 03:09:59,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:09:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-15 03:09:59,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:59,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:09:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-15 03:09:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-15 03:09:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:10:00,792 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:10:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:00,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:00,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:00,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 03:10:00,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:00,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:00,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:00,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:10:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:01,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364782925] [2020-10-15 03:10:01,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:01,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:10:01,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936526486] [2020-10-15 03:10:01,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:10:01,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:01,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:10:01,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:10:01,733 INFO L87 Difference]: Start difference. First operand 1322 states. Second operand 4 states. [2020-10-15 03:10:02,717 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-15 03:10:13,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:13,470 INFO L93 Difference]: Finished difference Result 2212 states and 3947 transitions. [2020-10-15 03:10:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:13,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2020-10-15 03:10:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:13,508 INFO L225 Difference]: With dead ends: 2212 [2020-10-15 03:10:13,508 INFO L226 Difference]: Without dead ends: 1956 [2020-10-15 03:10:13,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:13,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2020-10-15 03:10:13,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1954. [2020-10-15 03:10:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2020-10-15 03:10:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3183 transitions. [2020-10-15 03:10:13,661 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3183 transitions. Word has length 467 [2020-10-15 03:10:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:13,663 INFO L479 AbstractCegarLoop]: Abstraction has 1954 states and 3183 transitions. [2020-10-15 03:10:13,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:10:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3183 transitions. [2020-10-15 03:10:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-15 03:10:13,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:13,676 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] [2020-10-15 03:10:13,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:10:13,676 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:13,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1227921449, now seen corresponding path program 1 times [2020-10-15 03:10:13,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:13,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414812430] [2020-10-15 03:10:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:17,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:19,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:19,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-15 03:10:19,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:10:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-15 03:10:19,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:19,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-15 03:10:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:10:21,203 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:10:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:21,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:21,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 03:10:21,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:21,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:10:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:22,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414812430] [2020-10-15 03:10:22,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:22,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:22,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143724839] [2020-10-15 03:10:22,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:22,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:22,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:22,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:22,084 INFO L87 Difference]: Start difference. First operand 1954 states and 3183 transitions. Second operand 5 states. [2020-10-15 03:10:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:38,584 INFO L93 Difference]: Finished difference Result 5788 states and 9428 transitions. [2020-10-15 03:10:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:38,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-10-15 03:10:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:38,625 INFO L225 Difference]: With dead ends: 5788 [2020-10-15 03:10:38,626 INFO L226 Difference]: Without dead ends: 3853 [2020-10-15 03:10:38,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:10:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2020-10-15 03:10:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2020-10-15 03:10:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3851 states. [2020-10-15 03:10:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 6248 transitions. [2020-10-15 03:10:38,818 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 6248 transitions. Word has length 467 [2020-10-15 03:10:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:38,821 INFO L479 AbstractCegarLoop]: Abstraction has 3851 states and 6248 transitions. [2020-10-15 03:10:38,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 6248 transitions. [2020-10-15 03:10:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-15 03:10:38,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:38,845 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] [2020-10-15 03:10:38,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:10:38,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash -125896789, now seen corresponding path program 1 times [2020-10-15 03:10:38,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:38,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46829460] [2020-10-15 03:10:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:41,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:44,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-15 03:10:44,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:10:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-15 03:10:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:44,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:10:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:10:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-15 03:10:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:45,194 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:10:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:45,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:10:45,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:45,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46829460] [2020-10-15 03:10:45,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:45,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:10:45,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23504333] [2020-10-15 03:10:45,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:10:45,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:45,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:10:45,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:10:45,911 INFO L87 Difference]: Start difference. First operand 3851 states and 6248 transitions. Second operand 4 states. [2020-10-15 03:11:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:04,838 INFO L93 Difference]: Finished difference Result 11271 states and 18253 transitions. [2020-10-15 03:11:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:11:04,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2020-10-15 03:11:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:04,878 INFO L225 Difference]: With dead ends: 11271 [2020-10-15 03:11:04,879 INFO L226 Difference]: Without dead ends: 7583 [2020-10-15 03:11:04,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:11:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2020-10-15 03:11:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7581. [2020-10-15 03:11:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7581 states. [2020-10-15 03:11:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 12253 transitions. [2020-10-15 03:11:05,224 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 12253 transitions. Word has length 469 [2020-10-15 03:11:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:05,225 INFO L479 AbstractCegarLoop]: Abstraction has 7581 states and 12253 transitions. [2020-10-15 03:11:05,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:11:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 12253 transitions. [2020-10-15 03:11:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-15 03:11:05,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:05,246 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] [2020-10-15 03:11:05,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:11:05,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1432808338, now seen corresponding path program 1 times [2020-10-15 03:11:05,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:05,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141072444] [2020-10-15 03:11:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:05,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:06,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:09,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:10,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-15 03:11:10,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:11:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:11:10,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:10,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:11:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:11:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-15 03:11:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:11,211 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:11:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:11,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:11,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:11,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:11:11,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:11,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:11:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:11:11,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141072444] [2020-10-15 03:11:11,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:11,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:11:11,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838053629] [2020-10-15 03:11:11,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:11:11,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:11,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:11:11,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:11:11,583 INFO L87 Difference]: Start difference. First operand 7581 states and 12253 transitions. Second operand 4 states. [2020-10-15 03:11:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:30,067 INFO L93 Difference]: Finished difference Result 22277 states and 35946 transitions. [2020-10-15 03:11:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:11:30,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2020-10-15 03:11:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:30,157 INFO L225 Difference]: With dead ends: 22277 [2020-10-15 03:11:30,158 INFO L226 Difference]: Without dead ends: 14915 [2020-10-15 03:11:30,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:11:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14915 states. [2020-10-15 03:11:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14915 to 14913. [2020-10-15 03:11:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14913 states. [2020-10-15 03:11:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14913 states to 14913 states and 23999 transitions. [2020-10-15 03:11:30,855 INFO L78 Accepts]: Start accepts. Automaton has 14913 states and 23999 transitions. Word has length 470 [2020-10-15 03:11:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:30,856 INFO L479 AbstractCegarLoop]: Abstraction has 14913 states and 23999 transitions. [2020-10-15 03:11:30,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:11:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 14913 states and 23999 transitions. [2020-10-15 03:11:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-15 03:11:30,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:30,892 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] [2020-10-15 03:11:30,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:11:30,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:30,893 INFO L82 PathProgramCache]: Analyzing trace with hash -348259603, now seen corresponding path program 1 times [2020-10-15 03:11:30,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:30,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517466182] [2020-10-15 03:11:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:33,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-15 03:11:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:11:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-15 03:11:36,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:36,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:11:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:11:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-15 03:11:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:11:37,093 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:11:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:37,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:37,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:37,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:11:37,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:37,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:11:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:11:37,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517466182] [2020-10-15 03:11:37,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:37,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:11:37,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033999949] [2020-10-15 03:11:37,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:11:37,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:11:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:11:37,431 INFO L87 Difference]: Start difference. First operand 14913 states and 23999 transitions. Second operand 5 states. [2020-10-15 03:11:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:54,717 INFO L93 Difference]: Finished difference Result 44186 states and 71057 transitions. [2020-10-15 03:11:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:11:54,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2020-10-15 03:11:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:54,788 INFO L225 Difference]: With dead ends: 44186 [2020-10-15 03:11:54,789 INFO L226 Difference]: Without dead ends: 29520 [2020-10-15 03:11:54,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:11:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29520 states. [2020-10-15 03:11:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29520 to 29518. [2020-10-15 03:11:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29518 states. [2020-10-15 03:11:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29518 states to 29518 states and 47311 transitions. [2020-10-15 03:11:56,349 INFO L78 Accepts]: Start accepts. Automaton has 29518 states and 47311 transitions. Word has length 470 [2020-10-15 03:11:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:56,349 INFO L479 AbstractCegarLoop]: Abstraction has 29518 states and 47311 transitions. [2020-10-15 03:11:56,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:11:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 29518 states and 47311 transitions. [2020-10-15 03:11:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-15 03:11:56,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:56,419 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] [2020-10-15 03:11:56,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:11:56,419 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash 568033529, now seen corresponding path program 1 times [2020-10-15 03:11:56,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:56,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121153178] [2020-10-15 03:11:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:01,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-15 03:12:01,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:12:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:12:01,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:01,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 03:12:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-15 03:12:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:02,387 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:12:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:02,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:02,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:12:02,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:02,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:12:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121153178] [2020-10-15 03:12:02,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:02,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:12:02,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414620656] [2020-10-15 03:12:02,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:12:02,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:12:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:02,716 INFO L87 Difference]: Start difference. First operand 29518 states and 47311 transitions. Second operand 4 states. [2020-10-15 03:12:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:22,919 INFO L93 Difference]: Finished difference Result 86674 states and 138642 transitions. [2020-10-15 03:12:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:12:22,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2020-10-15 03:12:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:23,078 INFO L225 Difference]: With dead ends: 86674 [2020-10-15 03:12:23,078 INFO L226 Difference]: Without dead ends: 58176 [2020-10-15 03:12:23,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58176 states. [2020-10-15 03:12:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58176 to 58174. [2020-10-15 03:12:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58174 states. [2020-10-15 03:12:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58174 states to 58174 states and 92816 transitions. [2020-10-15 03:12:25,763 INFO L78 Accepts]: Start accepts. Automaton has 58174 states and 92816 transitions. Word has length 472 [2020-10-15 03:12:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:25,763 INFO L479 AbstractCegarLoop]: Abstraction has 58174 states and 92816 transitions. [2020-10-15 03:12:25,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:12:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 58174 states and 92816 transitions. [2020-10-15 03:12:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-15 03:12:25,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:25,846 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] [2020-10-15 03:12:25,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:12:25,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1073378966, now seen corresponding path program 1 times [2020-10-15 03:12:25,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:25,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753415605] [2020-10-15 03:12:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:30,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:31,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:31,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-15 03:12:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:12:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-15 03:12:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:31,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:12:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:12:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 03:12:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:32,010 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:12:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:32,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:32,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:32,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:12:32,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:32,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:12:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:12:32,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753415605] [2020-10-15 03:12:32,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:32,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:12:32,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103417513] [2020-10-15 03:12:32,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:12:32,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:12:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:12:32,321 INFO L87 Difference]: Start difference. First operand 58174 states and 92816 transitions. Second operand 5 states. [2020-10-15 03:12:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:53,630 INFO L93 Difference]: Finished difference Result 172460 states and 274927 transitions. [2020-10-15 03:12:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:12:53,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2020-10-15 03:12:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:53,859 INFO L225 Difference]: With dead ends: 172460 [2020-10-15 03:12:53,859 INFO L226 Difference]: Without dead ends: 114650 [2020-10-15 03:12:53,960 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 [2020-10-15 03:12:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114650 states. [2020-10-15 03:13:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114650 to 114648. [2020-10-15 03:13:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114648 states. [2020-10-15 03:13:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114648 states to 114648 states and 181968 transitions. [2020-10-15 03:13:01,926 INFO L78 Accepts]: Start accepts. Automaton has 114648 states and 181968 transitions. Word has length 473 [2020-10-15 03:13:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:01,927 INFO L479 AbstractCegarLoop]: Abstraction has 114648 states and 181968 transitions. [2020-10-15 03:13:01,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:13:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 114648 states and 181968 transitions. [2020-10-15 03:13:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-15 03:13:02,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:02,053 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] [2020-10-15 03:13:02,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:13:02,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:02,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:02,054 INFO L82 PathProgramCache]: Analyzing trace with hash -763462118, now seen corresponding path program 1 times [2020-10-15 03:13:02,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:02,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123515493] [2020-10-15 03:13:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-15 03:13:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:13:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:13:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:13:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-15 03:13:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:08,112 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-15 03:13:08,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:08,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:08,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:08,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:13:08,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:08,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:08,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123515493] [2020-10-15 03:13:08,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:08,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:13:08,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577258507] [2020-10-15 03:13:08,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:13:08,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:08,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:13:08,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:13:08,494 INFO L87 Difference]: Start difference. First operand 114648 states and 181968 transitions. Second operand 5 states.