/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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:42:48,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:42:48,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:42:48,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:42:48,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:42:48,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:42:48,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:42:48,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:42:48,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:42:48,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:42:48,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:42:48,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:42:48,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:42:48,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:42:48,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:42:48,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:42:48,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:42:48,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:42:48,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:42:48,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:42:48,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:42:48,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:42:48,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:42:48,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:42:48,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:42:48,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:42:48,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:42:48,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:42:48,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:42:48,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:42:48,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:42:48,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:42:48,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:42:48,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:42:48,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:42:48,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:42:48,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:42:48,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:42:48,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:42:48,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:42:48,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:42:48,215 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 03:42:48,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:42:48,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:42:48,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:42:48,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:42:48,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:42:48,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:42:48,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:42:48,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:42:48,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:42:48,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:42:48,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:42:48,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:42:48,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:42:48,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:42:48,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:42:48,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:42:48,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:42:48,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:42:48,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:42:48,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:42:48,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:42:48,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:42:48,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:42:48,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:42:48,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:42:48,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:42:48,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:42:48,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:42:48,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:42:48,263 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 03:42:48,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:42:48,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:42:48,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:42:48,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:42:48,563 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:42:48,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:42:48,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/009d9427b/f8d1e4e9ce5244b3a655d4a98f809ff0/FLAG1ba6d6c68 [2020-10-15 03:42:49,305 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:42:49,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:42:49,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/009d9427b/f8d1e4e9ce5244b3a655d4a98f809ff0/FLAG1ba6d6c68 [2020-10-15 03:42:49,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/009d9427b/f8d1e4e9ce5244b3a655d4a98f809ff0 [2020-10-15 03:42:49,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:42:49,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:42:49,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:49,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:42:49,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:42:49,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701ef800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:49, skipping insertion in model container [2020-10-15 03:42:49,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:49" (1/1) ... [2020-10-15 03:42:49,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:42:49,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:42:50,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:42:50,687 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:42:51,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:42:51,138 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:42:51,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51 WrapperNode [2020-10-15 03:42:51,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:51,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:42:51,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:42:51,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:42:51,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (1/1) ... [2020-10-15 03:42:51,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:42:51,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:42:51,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:42:51,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:42:51,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (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 03:42:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:42:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:42:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:42:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:42:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:42:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:42:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:42:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:42:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:42:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:42:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:42:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:42:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:42:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:42:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:42:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:42:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:42:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:42:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:42:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:42:55,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:42:55,085 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:42:55,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:42:55 BoogieIcfgContainer [2020-10-15 03:42:55,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:42:55,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:42:55,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:42:55,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:42:55,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:42:49" (1/3) ... [2020-10-15 03:42:55,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe90db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:42:55, skipping insertion in model container [2020-10-15 03:42:55,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:51" (2/3) ... [2020-10-15 03:42:55,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe90db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:42:55, skipping insertion in model container [2020-10-15 03:42:55,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:42:55" (3/3) ... [2020-10-15 03:42:55,119 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:42:55,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:42:55,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-15 03:42:55,171 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 03:42:55,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:42:55,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:42:55,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:42:55,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:42:55,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:42:55,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:42:55,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:42:55,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:42:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2020-10-15 03:42:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:42:55,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:55,329 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] [2020-10-15 03:42:55,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988322, now seen corresponding path program 1 times [2020-10-15 03:42:55,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:55,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079520350] [2020-10-15 03:42:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:00,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:43:00,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:43:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:43:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:00,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:43:00,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:43:02,424 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:43:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:02,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:02,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 03:43:02,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:02,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:02,539 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 03:43:02,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079520350] [2020-10-15 03:43:02,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:02,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:02,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881277200] [2020-10-15 03:43:02,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:02,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:02,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:02,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:02,567 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 8 states. [2020-10-15 03:43:03,870 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:43:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:16,425 INFO L93 Difference]: Finished difference Result 2281 states and 3864 transitions. [2020-10-15 03:43:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:43:16,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 03:43:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:16,458 INFO L225 Difference]: With dead ends: 2281 [2020-10-15 03:43:16,459 INFO L226 Difference]: Without dead ends: 1697 [2020-10-15 03:43:16,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:43:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-15 03:43:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1375. [2020-10-15 03:43:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-15 03:43:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1805 transitions. [2020-10-15 03:43:16,621 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1805 transitions. Word has length 56 [2020-10-15 03:43:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:16,622 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1805 transitions. [2020-10-15 03:43:16,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1805 transitions. [2020-10-15 03:43:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:43:16,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:16,627 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] [2020-10-15 03:43:16,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:43:16,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash -867241665, now seen corresponding path program 1 times [2020-10-15 03:43:16,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:16,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186857387] [2020-10-15 03:43:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:21,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:43:21,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 03:43:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:21,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:43:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:23,087 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:43:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 03:43:23,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:23,189 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 03:43:23,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186857387] [2020-10-15 03:43:23,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:23,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:23,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790624713] [2020-10-15 03:43:23,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:23,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:23,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:23,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:23,195 INFO L87 Difference]: Start difference. First operand 1375 states and 1805 transitions. Second operand 8 states. [2020-10-15 03:43:24,339 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:43:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:32,913 INFO L93 Difference]: Finished difference Result 2127 states and 2940 transitions. [2020-10-15 03:43:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:43:32,914 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-15 03:43:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:32,924 INFO L225 Difference]: With dead ends: 2127 [2020-10-15 03:43:32,925 INFO L226 Difference]: Without dead ends: 1953 [2020-10-15 03:43:32,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:43:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2020-10-15 03:43:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1373. [2020-10-15 03:43:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-15 03:43:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1802 transitions. [2020-10-15 03:43:33,012 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1802 transitions. Word has length 57 [2020-10-15 03:43:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:33,013 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1802 transitions. [2020-10-15 03:43:33,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1802 transitions. [2020-10-15 03:43:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:43:33,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:33,019 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] [2020-10-15 03:43:33,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:43:33,020 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash -108202759, now seen corresponding path program 1 times [2020-10-15 03:43:33,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:33,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326784746] [2020-10-15 03:43:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:43:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:43:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:38,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:43:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:39,489 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:43:39,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:39,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:39,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:39,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 03:43:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:39,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:39,581 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 03:43:39,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326784746] [2020-10-15 03:43:39,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:39,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:39,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51160707] [2020-10-15 03:43:39,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:39,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:39,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:39,585 INFO L87 Difference]: Start difference. First operand 1373 states and 1802 transitions. Second operand 9 states. [2020-10-15 03:43:40,755 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:43:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:49,135 INFO L93 Difference]: Finished difference Result 3499 states and 4749 transitions. [2020-10-15 03:43:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:43:49,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-15 03:43:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:49,150 INFO L225 Difference]: With dead ends: 3499 [2020-10-15 03:43:49,150 INFO L226 Difference]: Without dead ends: 2304 [2020-10-15 03:43:49,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:43:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2020-10-15 03:43:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 1782. [2020-10-15 03:43:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1782 states. [2020-10-15 03:43:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2325 transitions. [2020-10-15 03:43:49,264 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2325 transitions. Word has length 57 [2020-10-15 03:43:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:49,267 INFO L479 AbstractCegarLoop]: Abstraction has 1782 states and 2325 transitions. [2020-10-15 03:43:49,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2325 transitions. [2020-10-15 03:43:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:43:49,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:49,274 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] [2020-10-15 03:43:49,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:43:49,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1579807103, now seen corresponding path program 1 times [2020-10-15 03:43:49,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:49,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751323352] [2020-10-15 03:43:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:54,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:54,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:43:54,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:43:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:43:54,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:54,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:43:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:55,782 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:43:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:55,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:55,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:55,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:55,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:43:55,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:55,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:55,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:55,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:55,855 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 03:43:55,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751323352] [2020-10-15 03:43:55,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:55,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:55,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603902810] [2020-10-15 03:43:55,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:55,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:55,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:55,858 INFO L87 Difference]: Start difference. First operand 1782 states and 2325 transitions. Second operand 9 states. [2020-10-15 03:43:57,172 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 512 [2020-10-15 03:44:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:08,797 INFO L93 Difference]: Finished difference Result 4308 states and 5862 transitions. [2020-10-15 03:44:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 03:44:08,798 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-15 03:44:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:08,817 INFO L225 Difference]: With dead ends: 4308 [2020-10-15 03:44:08,818 INFO L226 Difference]: Without dead ends: 4035 [2020-10-15 03:44:08,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:44:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2020-10-15 03:44:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3211. [2020-10-15 03:44:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3211 states. [2020-10-15 03:44:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4259 transitions. [2020-10-15 03:44:09,018 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4259 transitions. Word has length 57 [2020-10-15 03:44:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:09,021 INFO L479 AbstractCegarLoop]: Abstraction has 3211 states and 4259 transitions. [2020-10-15 03:44:09,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4259 transitions. [2020-10-15 03:44:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:44:09,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:09,028 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] [2020-10-15 03:44:09,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:44:09,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash -477493960, now seen corresponding path program 1 times [2020-10-15 03:44:09,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:09,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824903066] [2020-10-15 03:44:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:14,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:44:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:44:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 03:44:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:14,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:44:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:44:14,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:15,423 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:44:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:15,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:15,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:15,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:15,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 03:44:15,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:15,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:15,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:44:15,522 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 03:44:15,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824903066] [2020-10-15 03:44:15,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:15,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:44:15,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017503019] [2020-10-15 03:44:15,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:44:15,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:44:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:44:15,530 INFO L87 Difference]: Start difference. First operand 3211 states and 4259 transitions. Second operand 10 states. [2020-10-15 03:44:16,739 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-15 03:44:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:25,508 INFO L93 Difference]: Finished difference Result 6598 states and 9178 transitions. [2020-10-15 03:44:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 03:44:25,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-15 03:44:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:25,528 INFO L225 Difference]: With dead ends: 6598 [2020-10-15 03:44:25,528 INFO L226 Difference]: Without dead ends: 5010 [2020-10-15 03:44:25,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:44:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2020-10-15 03:44:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 2915. [2020-10-15 03:44:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2915 states. [2020-10-15 03:44:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 3833 transitions. [2020-10-15 03:44:25,757 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 3833 transitions. Word has length 59 [2020-10-15 03:44:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:25,758 INFO L479 AbstractCegarLoop]: Abstraction has 2915 states and 3833 transitions. [2020-10-15 03:44:25,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:44:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 3833 transitions. [2020-10-15 03:44:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:44:25,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:25,765 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] [2020-10-15 03:44:25,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:44:25,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash 519506083, now seen corresponding path program 1 times [2020-10-15 03:44:25,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:25,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168756763] [2020-10-15 03:44:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:25,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:30,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:44:30,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:44:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:44:30,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:30,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:44:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:44:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:32,035 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:44:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:32,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:32,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:32,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:44:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:32,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:44:32,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168756763] [2020-10-15 03:44:32,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:32,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:44:32,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447357186] [2020-10-15 03:44:32,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:44:32,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:32,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:44:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:44:32,078 INFO L87 Difference]: Start difference. First operand 2915 states and 3833 transitions. Second operand 8 states. [2020-10-15 03:44:33,324 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-15 03:44:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:42,669 INFO L93 Difference]: Finished difference Result 6062 states and 8540 transitions. [2020-10-15 03:44:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:44:42,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:44:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:42,693 INFO L225 Difference]: With dead ends: 6062 [2020-10-15 03:44:42,693 INFO L226 Difference]: Without dead ends: 5455 [2020-10-15 03:44:42,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:44:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2020-10-15 03:44:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 3617. [2020-10-15 03:44:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3617 states. [2020-10-15 03:44:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4818 transitions. [2020-10-15 03:44:42,985 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4818 transitions. Word has length 59 [2020-10-15 03:44:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:42,985 INFO L479 AbstractCegarLoop]: Abstraction has 3617 states and 4818 transitions. [2020-10-15 03:44:42,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:44:42,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4818 transitions. [2020-10-15 03:44:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:44:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:42,990 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] [2020-10-15 03:44:42,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:44:42,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1087890717, now seen corresponding path program 1 times [2020-10-15 03:44:42,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:42,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234108347] [2020-10-15 03:44:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:47,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:48,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:44:48,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:44:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:44:48,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:48,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:44:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:49,400 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:44:49,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:49,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:44:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:49,465 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 03:44:49,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234108347] [2020-10-15 03:44:49,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:49,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:44:49,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071586422] [2020-10-15 03:44:49,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:49,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:49,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:49,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:49,467 INFO L87 Difference]: Start difference. First operand 3617 states and 4818 transitions. Second operand 9 states. [2020-10-15 03:44:51,885 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 520 DAG size of output: 518 [2020-10-15 03:45:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:00,390 INFO L93 Difference]: Finished difference Result 6961 states and 9902 transitions. [2020-10-15 03:45:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:45:00,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-15 03:45:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:00,411 INFO L225 Difference]: With dead ends: 6961 [2020-10-15 03:45:00,411 INFO L226 Difference]: Without dead ends: 6038 [2020-10-15 03:45:00,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:45:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2020-10-15 03:45:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 3500. [2020-10-15 03:45:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3500 states. [2020-10-15 03:45:00,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4649 transitions. [2020-10-15 03:45:00,676 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4649 transitions. Word has length 59 [2020-10-15 03:45:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:00,676 INFO L479 AbstractCegarLoop]: Abstraction has 3500 states and 4649 transitions. [2020-10-15 03:45:00,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4649 transitions. [2020-10-15 03:45:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 03:45:00,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:00,681 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] [2020-10-15 03:45:00,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:45:00,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash -226433332, now seen corresponding path program 1 times [2020-10-15 03:45:00,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:00,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969983744] [2020-10-15 03:45:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 03:45:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:45:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:06,948 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:45:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:06,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:06,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:45:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:06,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:07,004 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 03:45:07,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969983744] [2020-10-15 03:45:07,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:07,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:45:07,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579321829] [2020-10-15 03:45:07,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:45:07,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:07,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:45:07,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:07,006 INFO L87 Difference]: Start difference. First operand 3500 states and 4649 transitions. Second operand 8 states. [2020-10-15 03:45:08,209 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:45:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:14,707 INFO L93 Difference]: Finished difference Result 5865 states and 8249 transitions. [2020-10-15 03:45:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:45:14,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-15 03:45:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:14,719 INFO L225 Difference]: With dead ends: 5865 [2020-10-15 03:45:14,720 INFO L226 Difference]: Without dead ends: 4901 [2020-10-15 03:45:14,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:45:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2020-10-15 03:45:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3369. [2020-10-15 03:45:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3369 states. [2020-10-15 03:45:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4477 transitions. [2020-10-15 03:45:14,990 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4477 transitions. Word has length 60 [2020-10-15 03:45:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:14,990 INFO L479 AbstractCegarLoop]: Abstraction has 3369 states and 4477 transitions. [2020-10-15 03:45:14,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:45:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4477 transitions. [2020-10-15 03:45:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 03:45:14,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:14,994 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] [2020-10-15 03:45:14,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:45:14,994 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:14,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:14,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1731532157, now seen corresponding path program 1 times [2020-10-15 03:45:14,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:14,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733572015] [2020-10-15 03:45:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:19,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:20,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:20,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 03:45:20,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:45:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:45:20,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:20,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:45:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:45:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:21,260 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:45:21,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:21,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:21,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:21,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:21,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:45:21,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:21,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:21,311 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 03:45:21,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733572015] [2020-10-15 03:45:21,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:21,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:45:21,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162988692] [2020-10-15 03:45:21,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:45:21,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:21,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:45:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:21,313 INFO L87 Difference]: Start difference. First operand 3369 states and 4477 transitions. Second operand 8 states. [2020-10-15 03:45:22,524 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-15 03:45:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:30,855 INFO L93 Difference]: Finished difference Result 6682 states and 9447 transitions. [2020-10-15 03:45:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:45:30,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-15 03:45:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:30,868 INFO L225 Difference]: With dead ends: 6682 [2020-10-15 03:45:30,868 INFO L226 Difference]: Without dead ends: 5564 [2020-10-15 03:45:30,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:45:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2020-10-15 03:45:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 3306. [2020-10-15 03:45:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2020-10-15 03:45:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 4398 transitions. [2020-10-15 03:45:31,126 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 4398 transitions. Word has length 60 [2020-10-15 03:45:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:31,126 INFO L479 AbstractCegarLoop]: Abstraction has 3306 states and 4398 transitions. [2020-10-15 03:45:31,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:45:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 4398 transitions. [2020-10-15 03:45:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 03:45:31,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:31,129 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] [2020-10-15 03:45:31,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:45:31,129 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:31,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1230866025, now seen corresponding path program 1 times [2020-10-15 03:45:31,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:31,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933784106] [2020-10-15 03:45:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:31,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 03:45:36,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:45:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:45:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:36,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:45:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:45:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:37,418 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:45:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:37,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:37,465 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 03:45:37,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933784106] [2020-10-15 03:45:37,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:37,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:45:37,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048825902] [2020-10-15 03:45:37,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:45:37,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:37,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:45:37,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:45:37,467 INFO L87 Difference]: Start difference. First operand 3306 states and 4398 transitions. Second operand 9 states. [2020-10-15 03:45:38,631 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:45:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:50,499 INFO L93 Difference]: Finished difference Result 14141 states and 20746 transitions. [2020-10-15 03:45:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 03:45:50,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-15 03:45:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:50,528 INFO L225 Difference]: With dead ends: 14141 [2020-10-15 03:45:50,529 INFO L226 Difference]: Without dead ends: 13204 [2020-10-15 03:45:50,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2020-10-15 03:45:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13204 states. [2020-10-15 03:45:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13204 to 3285. [2020-10-15 03:45:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3285 states. [2020-10-15 03:45:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4327 transitions. [2020-10-15 03:45:51,029 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4327 transitions. Word has length 61 [2020-10-15 03:45:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:51,029 INFO L479 AbstractCegarLoop]: Abstraction has 3285 states and 4327 transitions. [2020-10-15 03:45:51,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4327 transitions. [2020-10-15 03:45:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 03:45:51,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:51,035 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] [2020-10-15 03:45:51,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:45:51,035 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:51,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1200118979, now seen corresponding path program 1 times [2020-10-15 03:45:51,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:51,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27862905] [2020-10-15 03:45:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:53,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:53,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 03:45:53,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-15 03:45:53,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:53,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:45:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:45:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:54,276 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:45:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:45:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:54,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:54,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27862905] [2020-10-15 03:45:54,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:54,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:45:54,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392368978] [2020-10-15 03:45:54,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:45:54,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:54,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:45:54,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:45:54,324 INFO L87 Difference]: Start difference. First operand 3285 states and 4327 transitions. Second operand 8 states. [2020-10-15 03:45:55,522 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:46:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:02,205 INFO L93 Difference]: Finished difference Result 5896 states and 8208 transitions. [2020-10-15 03:46:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:46:02,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-10-15 03:46:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:02,220 INFO L225 Difference]: With dead ends: 5896 [2020-10-15 03:46:02,221 INFO L226 Difference]: Without dead ends: 5259 [2020-10-15 03:46:02,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:46:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2020-10-15 03:46:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 3233. [2020-10-15 03:46:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2020-10-15 03:46:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4266 transitions. [2020-10-15 03:46:02,659 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4266 transitions. Word has length 62 [2020-10-15 03:46:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:02,660 INFO L479 AbstractCegarLoop]: Abstraction has 3233 states and 4266 transitions. [2020-10-15 03:46:02,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:46:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4266 transitions. [2020-10-15 03:46:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:46:02,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:02,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:02,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:46:02,665 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1939429315, now seen corresponding path program 1 times [2020-10-15 03:46:02,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:02,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654300764] [2020-10-15 03:46:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:02,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:07,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:46:07,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:46:07,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:46:07,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:07,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:46:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:46:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:46:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:08,867 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:46:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:08,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:46:08,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654300764] [2020-10-15 03:46:08,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:08,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:46:08,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312563353] [2020-10-15 03:46:08,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:46:08,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:46:08,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:08,909 INFO L87 Difference]: Start difference. First operand 3233 states and 4266 transitions. Second operand 6 states. [2020-10-15 03:46:10,101 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:46:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:15,605 INFO L93 Difference]: Finished difference Result 7381 states and 10602 transitions. [2020-10-15 03:46:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:46:15,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:46:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:15,615 INFO L225 Difference]: With dead ends: 7381 [2020-10-15 03:46:15,615 INFO L226 Difference]: Without dead ends: 6353 [2020-10-15 03:46:15,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6353 states. [2020-10-15 03:46:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6353 to 4271. [2020-10-15 03:46:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4271 states. [2020-10-15 03:46:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 5816 transitions. [2020-10-15 03:46:16,127 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 5816 transitions. Word has length 69 [2020-10-15 03:46:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:16,127 INFO L479 AbstractCegarLoop]: Abstraction has 4271 states and 5816 transitions. [2020-10-15 03:46:16,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:46:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 5816 transitions. [2020-10-15 03:46:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:46:16,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:16,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:16,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:46:16,134 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:16,134 INFO L82 PathProgramCache]: Analyzing trace with hash -313648216, now seen corresponding path program 1 times [2020-10-15 03:46:16,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:16,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526296927] [2020-10-15 03:46:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:21,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:46:21,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:46:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:22,335 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:46:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:22,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:22,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:46:22,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:22,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:46:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:46:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:22,398 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 03:46:22,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526296927] [2020-10-15 03:46:22,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:22,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:46:22,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871448763] [2020-10-15 03:46:22,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:46:22,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:22,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:46:22,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:22,400 INFO L87 Difference]: Start difference. First operand 4271 states and 5816 transitions. Second operand 6 states. [2020-10-15 03:46:23,638 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-15 03:46:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:28,926 INFO L93 Difference]: Finished difference Result 7879 states and 11082 transitions. [2020-10-15 03:46:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:46:28,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:46:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:28,932 INFO L225 Difference]: With dead ends: 7879 [2020-10-15 03:46:28,933 INFO L226 Difference]: Without dead ends: 5129 [2020-10-15 03:46:28,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2020-10-15 03:46:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 5127. [2020-10-15 03:46:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5127 states. [2020-10-15 03:46:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7082 transitions. [2020-10-15 03:46:29,537 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7082 transitions. Word has length 70 [2020-10-15 03:46:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:29,538 INFO L479 AbstractCegarLoop]: Abstraction has 5127 states and 7082 transitions. [2020-10-15 03:46:29,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:46:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7082 transitions. [2020-10-15 03:46:29,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:46:29,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:29,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:29,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:46:29,544 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash -915509265, now seen corresponding path program 1 times [2020-10-15 03:46:29,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:29,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126951728] [2020-10-15 03:46:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:30,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:31,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:31,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:46:31,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:46:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-10-15 03:46:31,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:31,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:46:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:46:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:46:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:33,032 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:46:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:33,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:33,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:46:33,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:33,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:33,085 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 03:46:33,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126951728] [2020-10-15 03:46:33,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:33,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:46:33,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267383886] [2020-10-15 03:46:33,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:46:33,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:33,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:46:33,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:33,087 INFO L87 Difference]: Start difference. First operand 5127 states and 7082 transitions. Second operand 6 states.