/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:12:00,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:12:00,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:12:00,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:12:00,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:12:00,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:12:00,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:12:00,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:12:00,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:12:00,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:12:00,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:12:00,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:12:00,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:12:00,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:12:00,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:12:00,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:12:00,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:12:00,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:12:00,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:12:00,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:12:00,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:12:00,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:12:00,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:12:00,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:12:00,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:12:00,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:12:00,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:12:00,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:12:00,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:12:00,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:12:00,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:12:00,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:12:00,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:12:00,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:12:00,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:12:00,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:12:00,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:12:00,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:12:00,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:12:00,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:12:00,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:12:00,857 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 [2020-10-14 09:12:00,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:12:00,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:12:00,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:12:00,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:12:00,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:12:00,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:12:00,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:12:00,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:12:00,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:12:00,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:12:00,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:12:00,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:12:00,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:12:00,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:12:00,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:12:00,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:12:00,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:12:00,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:12:00,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:12:00,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:12:00,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:12:00,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:12:00,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:12:00,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:12:00,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:12:00,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:12:00,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:12:00,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:12:00,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:12:00,885 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:12:01,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:12:01,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:12:01,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:12:01,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:12:01,256 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:12:01,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:12:01,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b67fd95d6/22d96df8849a41ceb866a4b11414ef51/FLAGc09401299 [2020-10-14 09:12:01,979 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:12:01,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:12:02,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b67fd95d6/22d96df8849a41ceb866a4b11414ef51/FLAGc09401299 [2020-10-14 09:12:02,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b67fd95d6/22d96df8849a41ceb866a4b11414ef51 [2020-10-14 09:12:02,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:12:02,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:12:02,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:12:02,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:12:02,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:12:02,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:12:02" (1/1) ... [2020-10-14 09:12:02,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f9529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:02, skipping insertion in model container [2020-10-14 09:12:02,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:12:02" (1/1) ... [2020-10-14 09:12:02,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:12:02,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:12:03,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:12:03,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:12:03,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:12:03,635 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:12:03,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03 WrapperNode [2020-10-14 09:12:03,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:12:03,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:12:03,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:12:03,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:12:03,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (1/1) ... [2020-10-14 09:12:03,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:12:03,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:12:03,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:12:03,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:12:03,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (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 [2020-10-14 09:12:03,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:12:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:12:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:12:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:12:03,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:12:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:12:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:12:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:12:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:12:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:12:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:12:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:12:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:12:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:12:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:12:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:12:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:12:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:12:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:12:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:12:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:12:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:12:06,176 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:12:06,178 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:12:06,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:12:06 BoogieIcfgContainer [2020-10-14 09:12:06,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:12:06,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:12:06,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:12:06,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:12:06,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:12:02" (1/3) ... [2020-10-14 09:12:06,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6ee7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:12:06, skipping insertion in model container [2020-10-14 09:12:06,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:12:03" (2/3) ... [2020-10-14 09:12:06,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6ee7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:12:06, skipping insertion in model container [2020-10-14 09:12:06,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:12:06" (3/3) ... [2020-10-14 09:12:06,207 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:12:06,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:12:06,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 09:12:06,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 09:12:06,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:12:06,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:12:06,270 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:12:06,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:12:06,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:12:06,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:12:06,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:12:06,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:12:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states. [2020-10-14 09:12:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 09:12:06,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:06,359 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] [2020-10-14 09:12:06,360 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash 57149415, now seen corresponding path program 1 times [2020-10-14 09:12:06,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:06,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033970669] [2020-10-14 09:12:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:11,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 09:12:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:12:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 09:12:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:12:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:12:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:12:12,551 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:12:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:12,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:12,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:12,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:12:12,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:12,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:12,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033970669] [2020-10-14 09:12:12,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:12,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:12:12,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658638102] [2020-10-14 09:12:12,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:12:12,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:12,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:12:12,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:12:12,652 INFO L87 Difference]: Start difference. First operand 707 states. Second operand 4 states. [2020-10-14 09:12:13,416 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-14 09:12:18,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:18,349 INFO L93 Difference]: Finished difference Result 1070 states and 1856 transitions. [2020-10-14 09:12:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:12:18,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 09:12:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:18,379 INFO L225 Difference]: With dead ends: 1070 [2020-10-14 09:12:18,380 INFO L226 Difference]: Without dead ends: 846 [2020-10-14 09:12:18,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:12:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-14 09:12:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2020-10-14 09:12:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-14 09:12:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1154 transitions. [2020-10-14 09:12:18,487 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1154 transitions. Word has length 66 [2020-10-14 09:12:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:18,488 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 1154 transitions. [2020-10-14 09:12:18,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:12:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1154 transitions. [2020-10-14 09:12:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:12:18,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:18,494 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] [2020-10-14 09:12:18,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:12:18,495 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:18,495 INFO L82 PathProgramCache]: Analyzing trace with hash -118466614, now seen corresponding path program 1 times [2020-10-14 09:12:18,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:18,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151360820] [2020-10-14 09:12:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:23,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:12:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:12:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:12:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:23,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:12:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:12:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:24,065 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:12:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:24,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:24,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:24,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:12:24,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:24,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:24,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151360820] [2020-10-14 09:12:24,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:24,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:12:24,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072763673] [2020-10-14 09:12:24,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:24,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:24,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:24,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:24,118 INFO L87 Difference]: Start difference. First operand 844 states and 1154 transitions. Second operand 6 states. [2020-10-14 09:12:24,678 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-14 09:12:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:29,358 INFO L93 Difference]: Finished difference Result 2666 states and 3896 transitions. [2020-10-14 09:12:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:12:29,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:12:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:29,375 INFO L225 Difference]: With dead ends: 2666 [2020-10-14 09:12:29,375 INFO L226 Difference]: Without dead ends: 2194 [2020-10-14 09:12:29,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:12:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2020-10-14 09:12:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1512. [2020-10-14 09:12:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1512 states. [2020-10-14 09:12:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2170 transitions. [2020-10-14 09:12:29,526 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2170 transitions. Word has length 67 [2020-10-14 09:12:29,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:29,527 INFO L479 AbstractCegarLoop]: Abstraction has 1512 states and 2170 transitions. [2020-10-14 09:12:29,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:29,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2170 transitions. [2020-10-14 09:12:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:12:29,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:29,536 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] [2020-10-14 09:12:29,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:12:29,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1195571622, now seen corresponding path program 1 times [2020-10-14 09:12:29,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:29,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15614335] [2020-10-14 09:12:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:34,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:34,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:12:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:12:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:12:34,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:34,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:12:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 09:12:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:35,105 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:12:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:35,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:12:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:35,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:35,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15614335] [2020-10-14 09:12:35,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:35,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:12:35,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173782567] [2020-10-14 09:12:35,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:35,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:35,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:35,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:35,161 INFO L87 Difference]: Start difference. First operand 1512 states and 2170 transitions. Second operand 6 states. [2020-10-14 09:12:35,706 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-14 09:12:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:39,958 INFO L93 Difference]: Finished difference Result 2474 states and 3635 transitions. [2020-10-14 09:12:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:12:39,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:12:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:39,976 INFO L225 Difference]: With dead ends: 2474 [2020-10-14 09:12:39,976 INFO L226 Difference]: Without dead ends: 2166 [2020-10-14 09:12:39,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:12:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2020-10-14 09:12:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1496. [2020-10-14 09:12:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-10-14 09:12:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2144 transitions. [2020-10-14 09:12:40,046 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2144 transitions. Word has length 67 [2020-10-14 09:12:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:40,047 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 2144 transitions. [2020-10-14 09:12:40,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2144 transitions. [2020-10-14 09:12:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:12:40,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:40,052 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] [2020-10-14 09:12:40,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:12:40,052 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:40,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1027992507, now seen corresponding path program 1 times [2020-10-14 09:12:40,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:40,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632873900] [2020-10-14 09:12:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:45,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:12:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:12:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:12:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:45,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:12:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:12:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:45,746 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:12:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:45,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:45,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:12:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:45,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:45,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632873900] [2020-10-14 09:12:45,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:45,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:12:45,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8013749] [2020-10-14 09:12:45,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:45,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:45,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:45,816 INFO L87 Difference]: Start difference. First operand 1496 states and 2144 transitions. Second operand 6 states. [2020-10-14 09:12:46,538 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-14 09:12:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:51,422 INFO L93 Difference]: Finished difference Result 8190 states and 12164 transitions. [2020-10-14 09:12:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:12:51,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:12:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:51,457 INFO L225 Difference]: With dead ends: 8190 [2020-10-14 09:12:51,457 INFO L226 Difference]: Without dead ends: 6846 [2020-10-14 09:12:51,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:12:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2020-10-14 09:12:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 4076. [2020-10-14 09:12:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4076 states. [2020-10-14 09:12:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 5982 transitions. [2020-10-14 09:12:51,668 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 5982 transitions. Word has length 67 [2020-10-14 09:12:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:51,668 INFO L479 AbstractCegarLoop]: Abstraction has 4076 states and 5982 transitions. [2020-10-14 09:12:51,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:12:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 5982 transitions. [2020-10-14 09:12:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:12:51,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:51,675 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] [2020-10-14 09:12:51,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:12:51,675 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:51,676 INFO L82 PathProgramCache]: Analyzing trace with hash -420475535, now seen corresponding path program 1 times [2020-10-14 09:12:51,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:51,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88674824] [2020-10-14 09:12:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:52,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:55,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:12:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:12:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:12:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:56,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:12:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:12:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:57,203 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:12:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:12:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:12:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:57,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88674824] [2020-10-14 09:12:57,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:57,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:12:57,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026466775] [2020-10-14 09:12:57,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:12:57,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:12:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:12:57,248 INFO L87 Difference]: Start difference. First operand 4076 states and 5982 transitions. Second operand 4 states. [2020-10-14 09:12:57,753 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-14 09:13:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:00,950 INFO L93 Difference]: Finished difference Result 10064 states and 14816 transitions. [2020-10-14 09:13:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:13:00,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:13:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:00,978 INFO L225 Difference]: With dead ends: 10064 [2020-10-14 09:13:00,978 INFO L226 Difference]: Without dead ends: 7086 [2020-10-14 09:13:00,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:13:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2020-10-14 09:13:01,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 7082. [2020-10-14 09:13:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7082 states. [2020-10-14 09:13:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 10236 transitions. [2020-10-14 09:13:01,298 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 10236 transitions. Word has length 67 [2020-10-14 09:13:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:01,299 INFO L479 AbstractCegarLoop]: Abstraction has 7082 states and 10236 transitions. [2020-10-14 09:13:01,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:13:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 10236 transitions. [2020-10-14 09:13:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:13:01,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:01,308 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] [2020-10-14 09:13:01,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:13:01,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:01,309 INFO L82 PathProgramCache]: Analyzing trace with hash 89602232, now seen corresponding path program 1 times [2020-10-14 09:13:01,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:01,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239279490] [2020-10-14 09:13:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:01,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:13:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:13:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:13:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:06,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:13:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:13:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:13:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:06,805 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:13:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:06,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:06,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:06,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:13:06,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:06,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:13:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:13:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:13:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:06,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239279490] [2020-10-14 09:13:06,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:06,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:13:06,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627910804] [2020-10-14 09:13:06,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:13:06,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:13:06,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:13:06,848 INFO L87 Difference]: Start difference. First operand 7082 states and 10236 transitions. Second operand 4 states. [2020-10-14 09:13:07,352 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-14 09:13:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:11,081 INFO L93 Difference]: Finished difference Result 17156 states and 25136 transitions. [2020-10-14 09:13:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:13:11,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:13:11,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:11,129 INFO L225 Difference]: With dead ends: 17156 [2020-10-14 09:13:11,129 INFO L226 Difference]: Without dead ends: 11932 [2020-10-14 09:13:11,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:13:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11932 states. [2020-10-14 09:13:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11932 to 11896. [2020-10-14 09:13:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11896 states. [2020-10-14 09:13:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11896 states to 11896 states and 17176 transitions. [2020-10-14 09:13:11,599 INFO L78 Accepts]: Start accepts. Automaton has 11896 states and 17176 transitions. Word has length 68 [2020-10-14 09:13:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:11,599 INFO L479 AbstractCegarLoop]: Abstraction has 11896 states and 17176 transitions. [2020-10-14 09:13:11,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:13:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11896 states and 17176 transitions. [2020-10-14 09:13:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:13:11,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:11,611 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] [2020-10-14 09:13:11,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:13:11,611 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash 663105297, now seen corresponding path program 1 times [2020-10-14 09:13:11,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:11,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988588276] [2020-10-14 09:13:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:11,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:16,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:16,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:13:16,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 09:13:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:13:16,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:16,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:13:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:13:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:17,130 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:13:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:17,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:13:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:17,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:13:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:13:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:17,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988588276] [2020-10-14 09:13:17,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:17,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:13:17,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715759714] [2020-10-14 09:13:17,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:13:17,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:17,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:13:17,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:13:17,159 INFO L87 Difference]: Start difference. First operand 11896 states and 17176 transitions. Second operand 6 states. [2020-10-14 09:13:17,644 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-14 09:13:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:22,355 INFO L93 Difference]: Finished difference Result 24092 states and 35472 transitions. [2020-10-14 09:13:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:13:22,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 09:13:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:22,401 INFO L225 Difference]: With dead ends: 24092 [2020-10-14 09:13:22,402 INFO L226 Difference]: Without dead ends: 20009 [2020-10-14 09:13:22,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:13:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2020-10-14 09:13:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 11681. [2020-10-14 09:13:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11681 states. [2020-10-14 09:13:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 16845 transitions. [2020-10-14 09:13:23,070 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 16845 transitions. Word has length 68 [2020-10-14 09:13:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:23,071 INFO L479 AbstractCegarLoop]: Abstraction has 11681 states and 16845 transitions. [2020-10-14 09:13:23,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:13:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 16845 transitions. [2020-10-14 09:13:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:13:23,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:23,080 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] [2020-10-14 09:13:23,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:13:23,081 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:23,081 INFO L82 PathProgramCache]: Analyzing trace with hash -649624966, now seen corresponding path program 1 times [2020-10-14 09:13:23,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:23,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235036244] [2020-10-14 09:13:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:28,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:13:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:13:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:13:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:28,594 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:13:28,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:13:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:28,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:13:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:13:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:28,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235036244] [2020-10-14 09:13:28,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:28,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:13:28,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484592443] [2020-10-14 09:13:28,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:13:28,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:13:28,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:13:28,630 INFO L87 Difference]: Start difference. First operand 11681 states and 16845 transitions. Second operand 4 states. [2020-10-14 09:13:29,137 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-14 09:13:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:32,995 INFO L93 Difference]: Finished difference Result 29850 states and 43506 transitions. [2020-10-14 09:13:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:13:32,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:13:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:33,045 INFO L225 Difference]: With dead ends: 29850 [2020-10-14 09:13:33,045 INFO L226 Difference]: Without dead ends: 20229 [2020-10-14 09:13:33,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:13:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20229 states. [2020-10-14 09:13:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20229 to 20163. [2020-10-14 09:13:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20163 states. [2020-10-14 09:13:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 28972 transitions. [2020-10-14 09:13:33,767 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 28972 transitions. Word has length 69 [2020-10-14 09:13:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:33,767 INFO L479 AbstractCegarLoop]: Abstraction has 20163 states and 28972 transitions. [2020-10-14 09:13:33,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:13:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 28972 transitions. [2020-10-14 09:13:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:13:33,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:33,780 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] [2020-10-14 09:13:33,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:13:33,780 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:33,780 INFO L82 PathProgramCache]: Analyzing trace with hash -653380795, now seen corresponding path program 1 times [2020-10-14 09:13:33,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:33,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123453506] [2020-10-14 09:13:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:33,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:34,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:38,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:38,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:13:38,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:13:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:13:38,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:38,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:13:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:13:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:39,318 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:13:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:13:39,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:39,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:13:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:13:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:39,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123453506] [2020-10-14 09:13:39,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:39,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:13:39,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606172753] [2020-10-14 09:13:39,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:13:39,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:39,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:13:39,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:13:39,362 INFO L87 Difference]: Start difference. First operand 20163 states and 28972 transitions. Second operand 6 states. [2020-10-14 09:13:39,867 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-14 09:13:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:49,210 INFO L93 Difference]: Finished difference Result 147756 states and 216807 transitions. [2020-10-14 09:13:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:13:49,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:13:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:49,378 INFO L225 Difference]: With dead ends: 147756 [2020-10-14 09:13:49,378 INFO L226 Difference]: Without dead ends: 131849 [2020-10-14 09:13:49,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:13:49,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131849 states. [2020-10-14 09:13:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131849 to 48159. [2020-10-14 09:13:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48159 states. [2020-10-14 09:13:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48159 states to 48159 states and 70010 transitions. [2020-10-14 09:13:51,802 INFO L78 Accepts]: Start accepts. Automaton has 48159 states and 70010 transitions. Word has length 69 [2020-10-14 09:13:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:51,802 INFO L479 AbstractCegarLoop]: Abstraction has 48159 states and 70010 transitions. [2020-10-14 09:13:51,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:13:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 48159 states and 70010 transitions. [2020-10-14 09:13:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:13:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:51,817 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] [2020-10-14 09:13:51,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:13:51,818 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 578086859, now seen corresponding path program 1 times [2020-10-14 09:13:51,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:51,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949870473] [2020-10-14 09:13:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:51,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:52,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:56,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:13:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:13:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:57,334 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:13:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:13:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:13:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:13:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:13:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:13:57,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:13:57,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:13:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:13:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:13:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:13:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:13:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:13:57,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949870473] [2020-10-14 09:13:57,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:13:57,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:13:57,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391815761] [2020-10-14 09:13:57,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:13:57,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:13:57,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:13:57,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:13:57,380 INFO L87 Difference]: Start difference. First operand 48159 states and 70010 transitions. Second operand 6 states. [2020-10-14 09:13:57,907 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-14 09:14:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:03,548 INFO L93 Difference]: Finished difference Result 115496 states and 167837 transitions. [2020-10-14 09:14:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:14:03,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:14:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:03,629 INFO L225 Difference]: With dead ends: 115496 [2020-10-14 09:14:03,629 INFO L226 Difference]: Without dead ends: 67710 [2020-10-14 09:14:03,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:14:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67710 states. [2020-10-14 09:14:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67710 to 67386. [2020-10-14 09:14:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67386 states. [2020-10-14 09:14:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67386 states to 67386 states and 97318 transitions. [2020-10-14 09:14:08,104 INFO L78 Accepts]: Start accepts. Automaton has 67386 states and 97318 transitions. Word has length 70 [2020-10-14 09:14:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:08,104 INFO L479 AbstractCegarLoop]: Abstraction has 67386 states and 97318 transitions. [2020-10-14 09:14:08,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 67386 states and 97318 transitions. [2020-10-14 09:14:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:14:08,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:08,121 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] [2020-10-14 09:14:08,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:14:08,121 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:08,121 INFO L82 PathProgramCache]: Analyzing trace with hash -631320121, now seen corresponding path program 1 times [2020-10-14 09:14:08,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:08,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219484299] [2020-10-14 09:14:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:14:13,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:14:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:14:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:13,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:14:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:14:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:14:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:13,636 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:14:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:13,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:14:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:14:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:14:13,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219484299] [2020-10-14 09:14:13,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:13,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:14:13,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357369826] [2020-10-14 09:14:13,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:13,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:13,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:13,668 INFO L87 Difference]: Start difference. First operand 67386 states and 97318 transitions. Second operand 6 states. [2020-10-14 09:14:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:33,799 INFO L93 Difference]: Finished difference Result 377971 states and 554243 transitions. [2020-10-14 09:14:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:14:33,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:14:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:34,251 INFO L225 Difference]: With dead ends: 377971 [2020-10-14 09:14:34,251 INFO L226 Difference]: Without dead ends: 322126 [2020-10-14 09:14:34,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:14:34,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322126 states. [2020-10-14 09:14:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322126 to 67056. [2020-10-14 09:14:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67056 states. [2020-10-14 09:14:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67056 states to 67056 states and 96412 transitions. [2020-10-14 09:14:42,480 INFO L78 Accepts]: Start accepts. Automaton has 67056 states and 96412 transitions. Word has length 70 [2020-10-14 09:14:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:42,481 INFO L479 AbstractCegarLoop]: Abstraction has 67056 states and 96412 transitions. [2020-10-14 09:14:42,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 67056 states and 96412 transitions. [2020-10-14 09:14:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:14:42,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:42,498 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] [2020-10-14 09:14:42,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:14:42,498 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:42,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1023954720, now seen corresponding path program 1 times [2020-10-14 09:14:42,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:42,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431494325] [2020-10-14 09:14:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:43,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:47,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:47,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:14:47,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:14:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:14:47,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:47,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:14:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:14:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:14:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:48,076 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:14:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:14:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:48,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:14:48,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:14:48,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:14:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:14:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:14:48,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431494325] [2020-10-14 09:14:48,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:14:48,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:14:48,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030996850] [2020-10-14 09:14:48,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:14:48,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:14:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:14:48,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:14:48,128 INFO L87 Difference]: Start difference. First operand 67056 states and 96412 transitions. Second operand 6 states. [2020-10-14 09:14:48,647 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:14:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:14:53,871 INFO L93 Difference]: Finished difference Result 100409 states and 145861 transitions. [2020-10-14 09:14:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:14:53,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:14:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:14:53,932 INFO L225 Difference]: With dead ends: 100409 [2020-10-14 09:14:53,932 INFO L226 Difference]: Without dead ends: 48488 [2020-10-14 09:14:53,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:14:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48488 states. [2020-10-14 09:14:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48488 to 48364. [2020-10-14 09:14:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48364 states. [2020-10-14 09:14:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48364 states to 48364 states and 69709 transitions. [2020-10-14 09:14:56,950 INFO L78 Accepts]: Start accepts. Automaton has 48364 states and 69709 transitions. Word has length 70 [2020-10-14 09:14:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:14:56,951 INFO L479 AbstractCegarLoop]: Abstraction has 48364 states and 69709 transitions. [2020-10-14 09:14:56,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:14:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 48364 states and 69709 transitions. [2020-10-14 09:14:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:14:56,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:14:56,964 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] [2020-10-14 09:14:56,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:14:56,965 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:14:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:14:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1308273519, now seen corresponding path program 1 times [2020-10-14 09:14:56,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:14:56,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974288763] [2020-10-14 09:14:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:14:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:14:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:14:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:02,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:15:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:15:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:02,521 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:15:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:02,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:15:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:15:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:15:02,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974288763] [2020-10-14 09:15:02,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:02,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:15:02,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623161952] [2020-10-14 09:15:02,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:02,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:02,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:02,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:02,572 INFO L87 Difference]: Start difference. First operand 48364 states and 69709 transitions. Second operand 6 states. [2020-10-14 09:15:03,104 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:15:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:07,504 INFO L93 Difference]: Finished difference Result 73283 states and 106551 transitions. [2020-10-14 09:15:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:15:07,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:15:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:07,547 INFO L225 Difference]: With dead ends: 73283 [2020-10-14 09:15:07,547 INFO L226 Difference]: Without dead ends: 35228 [2020-10-14 09:15:07,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:15:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35228 states. [2020-10-14 09:15:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35228 to 35136. [2020-10-14 09:15:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35136 states. [2020-10-14 09:15:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35136 states to 35136 states and 50725 transitions. [2020-10-14 09:15:09,752 INFO L78 Accepts]: Start accepts. Automaton has 35136 states and 50725 transitions. Word has length 71 [2020-10-14 09:15:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:15:09,753 INFO L479 AbstractCegarLoop]: Abstraction has 35136 states and 50725 transitions. [2020-10-14 09:15:09,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:15:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 35136 states and 50725 transitions. [2020-10-14 09:15:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:15:09,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:15:09,758 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] [2020-10-14 09:15:09,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:15:09,759 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:15:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:15:09,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1490373908, now seen corresponding path program 1 times [2020-10-14 09:15:09,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:15:09,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832868309] [2020-10-14 09:15:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:15:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:11,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:11,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:14,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:15:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:15:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:15,294 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:15:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:15,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:15:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:15:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:15:15,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832868309] [2020-10-14 09:15:15,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:15,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:15:15,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467118613] [2020-10-14 09:15:15,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:15,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:15,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:15,329 INFO L87 Difference]: Start difference. First operand 35136 states and 50725 transitions. Second operand 6 states. [2020-10-14 09:15:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:25,430 INFO L93 Difference]: Finished difference Result 155766 states and 225709 transitions. [2020-10-14 09:15:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:15:25,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:15:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:25,597 INFO L225 Difference]: With dead ends: 155766 [2020-10-14 09:15:25,597 INFO L226 Difference]: Without dead ends: 123508 [2020-10-14 09:15:25,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:15:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123508 states. [2020-10-14 09:15:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123508 to 34824. [2020-10-14 09:15:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34824 states. [2020-10-14 09:15:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34824 states to 34824 states and 49873 transitions. [2020-10-14 09:15:28,626 INFO L78 Accepts]: Start accepts. Automaton has 34824 states and 49873 transitions. Word has length 71 [2020-10-14 09:15:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:15:28,626 INFO L479 AbstractCegarLoop]: Abstraction has 34824 states and 49873 transitions. [2020-10-14 09:15:28,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:15:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 34824 states and 49873 transitions. [2020-10-14 09:15:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:15:28,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:15:28,631 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] [2020-10-14 09:15:28,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:15:28,632 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:15:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:15:28,632 INFO L82 PathProgramCache]: Analyzing trace with hash -808077240, now seen corresponding path program 1 times [2020-10-14 09:15:28,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:15:28,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335110740] [2020-10-14 09:15:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:15:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:33,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:15:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:34,155 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-14 09:15:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:15:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:15:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:15:34,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:15:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:15:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:15:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:15:34,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:15:34,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:15:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:15:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:15:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:15:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:15:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:15:34,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335110740] [2020-10-14 09:15:34,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:15:34,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:15:34,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015746842] [2020-10-14 09:15:34,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:15:34,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:15:34,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:15:34,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:15:34,194 INFO L87 Difference]: Start difference. First operand 34824 states and 49873 transitions. Second operand 6 states. [2020-10-14 09:15:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:15:47,606 INFO L93 Difference]: Finished difference Result 183916 states and 264065 transitions. [2020-10-14 09:15:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:15:47,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-14 09:15:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:15:47,790 INFO L225 Difference]: With dead ends: 183916 [2020-10-14 09:15:47,791 INFO L226 Difference]: Without dead ends: 153166 [2020-10-14 09:15:47,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:15:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153166 states.