/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:33:49,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:33:49,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:33:49,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:33:49,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:33:49,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:33:49,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:33:49,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:33:49,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:33:49,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:33:49,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:33:49,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:33:49,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:33:49,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:33:49,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:33:49,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:33:49,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:33:49,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:33:49,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:33:49,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:33:49,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:33:49,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:33:49,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:33:49,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:33:49,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:33:49,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:33:49,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:33:49,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:33:49,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:33:49,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:33:49,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:33:49,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:33:49,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:33:49,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:33:49,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:33:49,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:33:49,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:33:49,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:33:49,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:33:49,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:33:49,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:33:49,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:33:49,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:33:49,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:33:49,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:33:49,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:33:49,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:33:49,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:33:49,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:33:49,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:33:49,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:33:49,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:33:49,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:33:49,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:33:49,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:33:49,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:33:49,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:33:49,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:33:49,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:33:49,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:33:49,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:33:49,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:33:49,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:33:49,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:33:49,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:33:49,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:33:49,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:33:49,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:33:49,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:33:49,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:33:49,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:33:49,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:33:50,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:33:50,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:33:50,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:33:50,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:33:50,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:33:50,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:33:50,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5234c418b/a0ece678f9f84bdbbfa0f1076fb72ae6/FLAG4dd74f3df [2020-10-15 03:33:51,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:33:51,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:33:51,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5234c418b/a0ece678f9f84bdbbfa0f1076fb72ae6/FLAG4dd74f3df [2020-10-15 03:33:51,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5234c418b/a0ece678f9f84bdbbfa0f1076fb72ae6 [2020-10-15 03:33:51,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:33:51,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:33:51,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:51,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:33:51,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:33:51,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:51" (1/1) ... [2020-10-15 03:33:51,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3baa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:51, skipping insertion in model container [2020-10-15 03:33:51,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:51" (1/1) ... [2020-10-15 03:33:51,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:33:51,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:33:53,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:53,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:33:54,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:54,828 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:33:54,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54 WrapperNode [2020-10-15 03:33:54,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:54,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:33:54,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:33:54,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:33:54,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:54,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:54,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:54,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:55,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:55,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:55,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... [2020-10-15 03:33:55,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:33:55,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:33:55,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:33:55,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:33:55,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:33:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:33:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:33:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:33:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:33:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:33:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:33:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:33:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:33:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:33:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:33:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:33:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:33:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:33:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:33:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:33:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:33:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:33:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:33:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:33:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:33:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:33:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:33:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:33:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:33:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:34:01,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:34:01,317 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:34:01,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:01 BoogieIcfgContainer [2020-10-15 03:34:01,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:34:01,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:34:01,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:34:01,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:34:01,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:33:51" (1/3) ... [2020-10-15 03:34:01,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbc5713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:01, skipping insertion in model container [2020-10-15 03:34:01,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:54" (2/3) ... [2020-10-15 03:34:01,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbc5713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:01, skipping insertion in model container [2020-10-15 03:34:01,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:01" (3/3) ... [2020-10-15 03:34:01,337 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:34:01,347 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:34:01,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-15 03:34:01,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-15 03:34:01,400 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:34:01,401 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:34:01,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:34:01,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:34:01,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:34:01,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:34:01,402 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:34:01,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:34:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states. [2020-10-15 03:34:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 03:34:01,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:01,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:34:01,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash 228731339, now seen corresponding path program 1 times [2020-10-15 03:34:01,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:01,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895514597] [2020-10-15 03:34:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:07,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:07,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 03:34:07,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:34:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 03:34:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:07,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:34:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:34:10,143 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:34:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:10,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:10,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:10,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-15 03:34:10,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:10,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:10,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:10,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895514597] [2020-10-15 03:34:10,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:10,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:10,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494439643] [2020-10-15 03:34:10,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:10,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:10,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:10,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:10,502 INFO L87 Difference]: Start difference. First operand 2069 states. Second operand 6 states. [2020-10-15 03:34:12,859 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 754 [2020-10-15 03:34:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:31,996 INFO L93 Difference]: Finished difference Result 3586 states and 6301 transitions. [2020-10-15 03:34:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:31,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-15 03:34:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:32,031 INFO L225 Difference]: With dead ends: 3586 [2020-10-15 03:34:32,032 INFO L226 Difference]: Without dead ends: 2119 [2020-10-15 03:34:32,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-10-15 03:34:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2017. [2020-10-15 03:34:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2017 states. [2020-10-15 03:34:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2691 transitions. [2020-10-15 03:34:32,243 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2691 transitions. Word has length 104 [2020-10-15 03:34:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:32,244 INFO L479 AbstractCegarLoop]: Abstraction has 2017 states and 2691 transitions. [2020-10-15 03:34:32,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2691 transitions. [2020-10-15 03:34:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:34:32,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:32,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:34:32,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:34:32,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash -695949717, now seen corresponding path program 1 times [2020-10-15 03:34:32,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:32,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656033988] [2020-10-15 03:34:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:32,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:34:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:34:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 03:34:37,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:37,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:34:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:34:40,086 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:34:40,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:40,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 03:34:40,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:40,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:40,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656033988] [2020-10-15 03:34:40,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:40,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:40,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360561241] [2020-10-15 03:34:40,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:40,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:40,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:40,284 INFO L87 Difference]: Start difference. First operand 2017 states and 2691 transitions. Second operand 6 states. [2020-10-15 03:34:42,757 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 754 [2020-10-15 03:34:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:56,018 INFO L93 Difference]: Finished difference Result 4216 states and 5826 transitions. [2020-10-15 03:34:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:56,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-15 03:34:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:56,032 INFO L225 Difference]: With dead ends: 4216 [2020-10-15 03:34:56,033 INFO L226 Difference]: Without dead ends: 2557 [2020-10-15 03:34:56,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2020-10-15 03:34:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2455. [2020-10-15 03:34:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2020-10-15 03:34:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3439 transitions. [2020-10-15 03:34:56,152 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3439 transitions. Word has length 105 [2020-10-15 03:34:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:56,155 INFO L479 AbstractCegarLoop]: Abstraction has 2455 states and 3439 transitions. [2020-10-15 03:34:56,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3439 transitions. [2020-10-15 03:34:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:34:56,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:56,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:34:56,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:34:56,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash -502493875, now seen corresponding path program 1 times [2020-10-15 03:34:56,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:56,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582777323] [2020-10-15 03:34:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:35:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:35:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:35:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:35:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:04,385 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:35:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:04,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 03:35:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:04,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:04,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582777323] [2020-10-15 03:35:04,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:04,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:04,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628991805] [2020-10-15 03:35:04,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:04,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:04,571 INFO L87 Difference]: Start difference. First operand 2455 states and 3439 transitions. Second operand 6 states. [2020-10-15 03:35:07,310 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 754 [2020-10-15 03:35:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:18,177 INFO L93 Difference]: Finished difference Result 5795 states and 8291 transitions. [2020-10-15 03:35:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:18,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-15 03:35:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:18,198 INFO L225 Difference]: With dead ends: 5795 [2020-10-15 03:35:18,199 INFO L226 Difference]: Without dead ends: 3549 [2020-10-15 03:35:18,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2020-10-15 03:35:18,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3447. [2020-10-15 03:35:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3447 states. [2020-10-15 03:35:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4989 transitions. [2020-10-15 03:35:18,427 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4989 transitions. Word has length 106 [2020-10-15 03:35:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:18,428 INFO L479 AbstractCegarLoop]: Abstraction has 3447 states and 4989 transitions. [2020-10-15 03:35:18,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4989 transitions. [2020-10-15 03:35:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:35:18,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:18,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:35:18,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:35:18,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:18,438 INFO L82 PathProgramCache]: Analyzing trace with hash -835231045, now seen corresponding path program 1 times [2020-10-15 03:35:18,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:18,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911046084] [2020-10-15 03:35:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:35:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:35:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:35:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:23,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:35:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:25,966 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:35:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:26,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:26,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:26,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 03:35:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:26,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:26,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911046084] [2020-10-15 03:35:26,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:26,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:26,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407577947] [2020-10-15 03:35:26,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:26,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:26,121 INFO L87 Difference]: Start difference. First operand 3447 states and 4989 transitions. Second operand 6 states. [2020-10-15 03:35:28,554 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 753 [2020-10-15 03:35:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:38,978 INFO L93 Difference]: Finished difference Result 8757 states and 12797 transitions. [2020-10-15 03:35:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:38,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-15 03:35:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:39,007 INFO L225 Difference]: With dead ends: 8757 [2020-10-15 03:35:39,007 INFO L226 Difference]: Without dead ends: 5446 [2020-10-15 03:35:39,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2020-10-15 03:35:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5368. [2020-10-15 03:35:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5368 states. [2020-10-15 03:35:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 7887 transitions. [2020-10-15 03:35:39,256 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 7887 transitions. Word has length 107 [2020-10-15 03:35:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:39,256 INFO L479 AbstractCegarLoop]: Abstraction has 5368 states and 7887 transitions. [2020-10-15 03:35:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 7887 transitions. [2020-10-15 03:35:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:35:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:39,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:35:39,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:35:39,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 556828815, now seen corresponding path program 1 times [2020-10-15 03:35:39,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:39,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817946892] [2020-10-15 03:35:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:44,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:35:44,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:35:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:35:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:44,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:35:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:46,715 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:35:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:46,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 03:35:46,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:46,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:46,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817946892] [2020-10-15 03:35:46,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:46,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:46,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839629308] [2020-10-15 03:35:46,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:46,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:46,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:46,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:46,921 INFO L87 Difference]: Start difference. First operand 5368 states and 7887 transitions. Second operand 6 states. [2020-10-15 03:35:49,314 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 754 [2020-10-15 03:35:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:59,631 INFO L93 Difference]: Finished difference Result 13388 states and 19642 transitions. [2020-10-15 03:35:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:59,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-15 03:35:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:59,660 INFO L225 Difference]: With dead ends: 13388 [2020-10-15 03:35:59,660 INFO L226 Difference]: Without dead ends: 8130 [2020-10-15 03:35:59,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8130 states. [2020-10-15 03:36:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8130 to 8028. [2020-10-15 03:36:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8028 states. [2020-10-15 03:36:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8028 states to 8028 states and 11769 transitions. [2020-10-15 03:36:00,038 INFO L78 Accepts]: Start accepts. Automaton has 8028 states and 11769 transitions. Word has length 108 [2020-10-15 03:36:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:00,040 INFO L479 AbstractCegarLoop]: Abstraction has 8028 states and 11769 transitions. [2020-10-15 03:36:00,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:00,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8028 states and 11769 transitions. [2020-10-15 03:36:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 03:36:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:00,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:00,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:36:00,052 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash 765392991, now seen corresponding path program 1 times [2020-10-15 03:36:00,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:00,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182432862] [2020-10-15 03:36:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:05,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 03:36:05,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:36:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:36:05,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:05,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:36:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:07,764 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:36:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 03:36:07,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:07,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:07,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182432862] [2020-10-15 03:36:07,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:07,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:07,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309487517] [2020-10-15 03:36:07,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:07,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:07,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:07,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:07,882 INFO L87 Difference]: Start difference. First operand 8028 states and 11769 transitions. Second operand 6 states. [2020-10-15 03:36:10,230 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 754 [2020-10-15 03:36:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:20,532 INFO L93 Difference]: Finished difference Result 19651 states and 28596 transitions. [2020-10-15 03:36:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:20,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-10-15 03:36:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:20,569 INFO L225 Difference]: With dead ends: 19651 [2020-10-15 03:36:20,570 INFO L226 Difference]: Without dead ends: 11723 [2020-10-15 03:36:20,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11723 states. [2020-10-15 03:36:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11723 to 11623. [2020-10-15 03:36:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11623 states. [2020-10-15 03:36:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11623 states to 11623 states and 16818 transitions. [2020-10-15 03:36:21,008 INFO L78 Accepts]: Start accepts. Automaton has 11623 states and 16818 transitions. Word has length 109 [2020-10-15 03:36:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:21,009 INFO L479 AbstractCegarLoop]: Abstraction has 11623 states and 16818 transitions. [2020-10-15 03:36:21,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11623 states and 16818 transitions. [2020-10-15 03:36:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:36:21,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:21,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:21,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:36:21,022 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:21,022 INFO L82 PathProgramCache]: Analyzing trace with hash -475541199, now seen corresponding path program 1 times [2020-10-15 03:36:21,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:21,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189916174] [2020-10-15 03:36:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:36:26,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:36:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:36:26,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:26,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:36:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:36:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:28,781 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:36:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:28,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:28,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:28,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189916174] [2020-10-15 03:36:28,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:28,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:36:28,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822444603] [2020-10-15 03:36:28,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:36:28,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:28,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:36:28,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:36:28,866 INFO L87 Difference]: Start difference. First operand 11623 states and 16818 transitions. Second operand 7 states. [2020-10-15 03:36:31,332 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 755 [2020-10-15 03:36:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:41,555 INFO L93 Difference]: Finished difference Result 19425 states and 28707 transitions. [2020-10-15 03:36:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:36:41,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-15 03:36:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:41,585 INFO L225 Difference]: With dead ends: 19425 [2020-10-15 03:36:41,585 INFO L226 Difference]: Without dead ends: 12156 [2020-10-15 03:36:41,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:36:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12156 states. [2020-10-15 03:36:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12156 to 9512. [2020-10-15 03:36:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-15 03:36:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 13886 transitions. [2020-10-15 03:36:42,118 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 13886 transitions. Word has length 110 [2020-10-15 03:36:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:42,118 INFO L479 AbstractCegarLoop]: Abstraction has 9512 states and 13886 transitions. [2020-10-15 03:36:42,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:36:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 13886 transitions. [2020-10-15 03:36:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:36:42,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:42,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:42,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:36:42,124 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1190194363, now seen corresponding path program 1 times [2020-10-15 03:36:42,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:42,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926730623] [2020-10-15 03:36:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:36:47,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:36:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:47,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:36:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:36:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:49,588 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:36:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:49,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:49,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:49,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:36:49,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:49,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:49,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:49,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:49,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:49,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:49,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926730623] [2020-10-15 03:36:49,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:49,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:36:49,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061985942] [2020-10-15 03:36:49,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:36:49,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:49,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:36:49,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:49,675 INFO L87 Difference]: Start difference. First operand 9512 states and 13886 transitions. Second operand 8 states. [2020-10-15 03:36:52,142 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 757 [2020-10-15 03:37:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:02,693 INFO L93 Difference]: Finished difference Result 23039 states and 34575 transitions. [2020-10-15 03:37:02,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:37:02,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-10-15 03:37:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:02,735 INFO L225 Difference]: With dead ends: 23039 [2020-10-15 03:37:02,735 INFO L226 Difference]: Without dead ends: 17212 [2020-10-15 03:37:02,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:37:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states. [2020-10-15 03:37:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 9512. [2020-10-15 03:37:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-15 03:37:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 13885 transitions. [2020-10-15 03:37:03,343 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 13885 transitions. Word has length 110 [2020-10-15 03:37:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:03,344 INFO L479 AbstractCegarLoop]: Abstraction has 9512 states and 13885 transitions. [2020-10-15 03:37:03,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:37:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 13885 transitions. [2020-10-15 03:37:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:37:03,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:03,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:03,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:37:03,348 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:03,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:03,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1530387530, now seen corresponding path program 1 times [2020-10-15 03:37:03,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:03,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663255209] [2020-10-15 03:37:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:08,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:37:08,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:37:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:37:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:08,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:37:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:37:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:10,849 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-15 03:37:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:10,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663255209] [2020-10-15 03:37:10,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:10,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:37:10,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852498936] [2020-10-15 03:37:10,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:37:10,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:10,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:37:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:10,947 INFO L87 Difference]: Start difference. First operand 9512 states and 13885 transitions. Second operand 8 states. [2020-10-15 03:37:13,446 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 757