/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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:46:57,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:46:57,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:46:57,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:46:57,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:46:57,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:46:57,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:46:57,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:46:57,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:46:57,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:46:57,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:46:57,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:46:57,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:46:57,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:46:57,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:46:57,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:46:57,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:46:57,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:46:57,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:46:57,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:46:57,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:46:57,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:46:57,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:46:57,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:46:57,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:46:57,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:46:57,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:46:57,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:46:57,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:46:57,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:46:57,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:46:57,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:46:57,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:46:57,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:46:57,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:46:57,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:46:57,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:46:57,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:46:57,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:46:57,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:46:57,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:46:57,161 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 03:46:57,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:46:57,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:46:57,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:46:57,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:46:57,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:46:57,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:46:57,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:46:57,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:46:57,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:46:57,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:46:57,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:46:57,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:46:57,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:46:57,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:46:57,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:46:57,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:46:57,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:46:57,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:46:57,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:46:57,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:46:57,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:46:57,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:46:57,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:46:57,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:46:57,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:46:57,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:46:57,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:46:57,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:46:57,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:46:57,216 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 03:46:57,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:46:57,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:46:57,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:46:57,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:46:57,531 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:46:57,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-15 03:46:57,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/408729b56/573512d791294b1fb3c793ada55499bf/FLAGf21e6bc87 [2020-10-15 03:46:58,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:46:58,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-15 03:46:58,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/408729b56/573512d791294b1fb3c793ada55499bf/FLAGf21e6bc87 [2020-10-15 03:46:58,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/408729b56/573512d791294b1fb3c793ada55499bf [2020-10-15 03:46:58,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:46:58,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:46:58,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:46:58,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:46:58,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:46:58,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:46:58" (1/1) ... [2020-10-15 03:46:58,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3364ee0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:46:58, skipping insertion in model container [2020-10-15 03:46:58,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:46:58" (1/1) ... [2020-10-15 03:46:58,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:46:58,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:47:00,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:47:00,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:47:00,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:47:00,781 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:47:00,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00 WrapperNode [2020-10-15 03:47:00,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:47:00,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:47:00,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:47:00,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:47:00,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:00,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:00,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:00,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:01,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:01,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:01,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (1/1) ... [2020-10-15 03:47:01,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:47:01,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:47:01,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:47:01,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:47:01,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (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 03:47:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:47:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:47:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:47:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:47:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:47:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:47:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:47:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:47:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:47:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:47:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:47:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:47:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:47:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:47:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:47:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:47:05,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:47:05,863 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:47:05,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:47:05 BoogieIcfgContainer [2020-10-15 03:47:05,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:47:05,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:47:05,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:47:05,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:47:05,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:46:58" (1/3) ... [2020-10-15 03:47:05,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42988224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:47:05, skipping insertion in model container [2020-10-15 03:47:05,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:47:00" (2/3) ... [2020-10-15 03:47:05,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42988224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:47:05, skipping insertion in model container [2020-10-15 03:47:05,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:47:05" (3/3) ... [2020-10-15 03:47:05,894 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-15 03:47:05,904 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:47:05,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-15 03:47:05,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 03:47:05,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:47:05,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:47:05,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:47:05,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:47:05,971 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:47:05,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:47:05,971 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:47:05,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:47:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states. [2020-10-15 03:47:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:47:06,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:06,057 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 03:47:06,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:06,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1405388640, now seen corresponding path program 1 times [2020-10-15 03:47:06,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:06,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976785263] [2020-10-15 03:47:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:11,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:47:11,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:47:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 03:47:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:11,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:47:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:47:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:47:14,400 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:47:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:14,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:14,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-15 03:47:14,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:14,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:14,669 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 03:47:14,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976785263] [2020-10-15 03:47:14,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:14,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:47:14,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474990315] [2020-10-15 03:47:14,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:47:14,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:14,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:47:14,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:47:14,698 INFO L87 Difference]: Start difference. First operand 2051 states. Second operand 9 states. [2020-10-15 03:47:16,780 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-15 03:47:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:43,278 INFO L93 Difference]: Finished difference Result 4549 states and 7716 transitions. [2020-10-15 03:47:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 03:47:43,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-15 03:47:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:43,329 INFO L225 Difference]: With dead ends: 4549 [2020-10-15 03:47:43,329 INFO L226 Difference]: Without dead ends: 4352 [2020-10-15 03:47:43,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:47:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2020-10-15 03:47:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 2070. [2020-10-15 03:47:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-15 03:47:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2670 transitions. [2020-10-15 03:47:43,524 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2670 transitions. Word has length 69 [2020-10-15 03:47:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:43,525 INFO L479 AbstractCegarLoop]: Abstraction has 2070 states and 2670 transitions. [2020-10-15 03:47:43,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:47:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2670 transitions. [2020-10-15 03:47:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:47:43,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:43,534 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 03:47:43,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:47:43,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash -342068591, now seen corresponding path program 1 times [2020-10-15 03:47:43,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:43,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708483625] [2020-10-15 03:47:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:47:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:47:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-15 03:47:48,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:48,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:47:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:47:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:47:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:50,860 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:47:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 03:47:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:50,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:47:50,971 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 03:47:50,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708483625] [2020-10-15 03:47:50,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:50,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:47:50,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211957761] [2020-10-15 03:47:50,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:47:50,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:50,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:47:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:47:50,975 INFO L87 Difference]: Start difference. First operand 2070 states and 2670 transitions. Second operand 10 states. [2020-10-15 03:47:54,935 WARN L193 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 676 DAG size of output: 674 [2020-10-15 03:48:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:25,246 INFO L93 Difference]: Finished difference Result 4698 states and 6189 transitions. [2020-10-15 03:48:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:48:25,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-15 03:48:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:25,271 INFO L225 Difference]: With dead ends: 4698 [2020-10-15 03:48:25,271 INFO L226 Difference]: Without dead ends: 4593 [2020-10-15 03:48:25,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:48:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2020-10-15 03:48:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 2061. [2020-10-15 03:48:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-15 03:48:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2656 transitions. [2020-10-15 03:48:25,421 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2656 transitions. Word has length 70 [2020-10-15 03:48:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:25,422 INFO L479 AbstractCegarLoop]: Abstraction has 2061 states and 2656 transitions. [2020-10-15 03:48:25,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:48:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2656 transitions. [2020-10-15 03:48:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:48:25,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:25,428 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 03:48:25,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:48:25,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:25,429 INFO L82 PathProgramCache]: Analyzing trace with hash -75475044, now seen corresponding path program 1 times [2020-10-15 03:48:25,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:25,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293728771] [2020-10-15 03:48:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:25,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:30,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:48:30,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:48:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:48:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:30,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:48:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:48:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:48:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:32,380 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:48:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:32,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:32,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:32,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 03:48:32,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:32,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:48:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:48:32,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:32,526 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 03:48:32,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293728771] [2020-10-15 03:48:32,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:32,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:48:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365057076] [2020-10-15 03:48:32,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:48:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:48:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:48:32,530 INFO L87 Difference]: Start difference. First operand 2061 states and 2656 transitions. Second operand 6 states. [2020-10-15 03:48:34,391 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 661 [2020-10-15 03:48:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:50,283 INFO L93 Difference]: Finished difference Result 3711 states and 4758 transitions. [2020-10-15 03:48:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:48:50,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:48:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:50,299 INFO L225 Difference]: With dead ends: 3711 [2020-10-15 03:48:50,299 INFO L226 Difference]: Without dead ends: 2515 [2020-10-15 03:48:50,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:48:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2020-10-15 03:48:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2498. [2020-10-15 03:48:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2498 states. [2020-10-15 03:48:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3142 transitions. [2020-10-15 03:48:50,480 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3142 transitions. Word has length 70 [2020-10-15 03:48:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:50,482 INFO L479 AbstractCegarLoop]: Abstraction has 2498 states and 3142 transitions. [2020-10-15 03:48:50,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:48:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3142 transitions. [2020-10-15 03:48:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:48:50,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:50,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:48:50,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:48:50,494 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:50,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1864986880, now seen corresponding path program 1 times [2020-10-15 03:48:50,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:50,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213202214] [2020-10-15 03:48:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:55,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:48:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:48:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:48:55,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:55,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:48:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:48:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:48:55,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:57,717 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:48:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:57,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:57,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:57,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 03:48:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:57,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:48:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:48:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:57,853 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 03:48:57,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213202214] [2020-10-15 03:48:57,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:57,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:48:57,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079770575] [2020-10-15 03:48:57,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:48:57,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:57,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:48:57,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:48:57,855 INFO L87 Difference]: Start difference. First operand 2498 states and 3142 transitions. Second operand 9 states. [2020-10-15 03:48:59,683 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-15 03:49:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:20,652 INFO L93 Difference]: Finished difference Result 6261 states and 8413 transitions. [2020-10-15 03:49:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 03:49:20,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:49:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:20,679 INFO L225 Difference]: With dead ends: 6261 [2020-10-15 03:49:20,679 INFO L226 Difference]: Without dead ends: 6012 [2020-10-15 03:49:20,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-15 03:49:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2020-10-15 03:49:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 2510. [2020-10-15 03:49:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2510 states. [2020-10-15 03:49:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3156 transitions. [2020-10-15 03:49:20,903 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3156 transitions. Word has length 71 [2020-10-15 03:49:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:20,908 INFO L479 AbstractCegarLoop]: Abstraction has 2510 states and 3156 transitions. [2020-10-15 03:49:20,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:49:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3156 transitions. [2020-10-15 03:49:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:20,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:20,915 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 03:49:20,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:49:20,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:20,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1270414613, now seen corresponding path program 1 times [2020-10-15 03:49:20,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:20,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770691627] [2020-10-15 03:49:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:26,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:26,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:26,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:26,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:49:26,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:26,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:49:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:49:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:27,954 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:49:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:27,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:27,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:27,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:49:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:27,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:28,027 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 03:49:28,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770691627] [2020-10-15 03:49:28,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:28,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:49:28,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694225742] [2020-10-15 03:49:28,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:28,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:28,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:28,037 INFO L87 Difference]: Start difference. First operand 2510 states and 3156 transitions. Second operand 6 states. [2020-10-15 03:49:29,859 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-15 03:49:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:49,776 INFO L93 Difference]: Finished difference Result 6505 states and 8505 transitions. [2020-10-15 03:49:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:49:49,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:49:49,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:49,797 INFO L225 Difference]: With dead ends: 6505 [2020-10-15 03:49:49,797 INFO L226 Difference]: Without dead ends: 6264 [2020-10-15 03:49:49,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:49:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2020-10-15 03:49:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 5463. [2020-10-15 03:49:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5463 states. [2020-10-15 03:49:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 7009 transitions. [2020-10-15 03:49:50,278 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 7009 transitions. Word has length 71 [2020-10-15 03:49:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:50,280 INFO L479 AbstractCegarLoop]: Abstraction has 5463 states and 7009 transitions. [2020-10-15 03:49:50,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 7009 transitions. [2020-10-15 03:49:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:50,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:50,294 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 03:49:50,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:49:50,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1502589891, now seen corresponding path program 1 times [2020-10-15 03:49:50,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:50,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41073372] [2020-10-15 03:49:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:50,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:55,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:55,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:55,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:49:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:55,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:49:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:49:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:57,190 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:49:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:57,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:57,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:57,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:57,247 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 03:49:57,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41073372] [2020-10-15 03:49:57,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:57,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:49:57,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796764289] [2020-10-15 03:49:57,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:57,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:57,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:57,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:57,249 INFO L87 Difference]: Start difference. First operand 5463 states and 7009 transitions. Second operand 6 states. [2020-10-15 03:49:58,976 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-15 03:50:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:18,981 INFO L93 Difference]: Finished difference Result 6593 states and 8646 transitions. [2020-10-15 03:50:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:50:18,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:50:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:19,005 INFO L225 Difference]: With dead ends: 6593 [2020-10-15 03:50:19,005 INFO L226 Difference]: Without dead ends: 6249 [2020-10-15 03:50:19,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:50:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2020-10-15 03:50:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5452. [2020-10-15 03:50:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5452 states. [2020-10-15 03:50:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 6993 transitions. [2020-10-15 03:50:19,377 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 6993 transitions. Word has length 71 [2020-10-15 03:50:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:19,377 INFO L479 AbstractCegarLoop]: Abstraction has 5452 states and 6993 transitions. [2020-10-15 03:50:19,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:50:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 6993 transitions. [2020-10-15 03:50:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:50:19,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:19,387 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 03:50:19,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:50:19,387 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:19,388 INFO L82 PathProgramCache]: Analyzing trace with hash 877627762, now seen corresponding path program 1 times [2020-10-15 03:50:19,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:19,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956576317] [2020-10-15 03:50:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:50:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:50:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-15 03:50:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:24,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:50:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:26,417 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-15 03:50:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:50:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:26,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:26,480 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 03:50:26,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956576317] [2020-10-15 03:50:26,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:26,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:26,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001027199] [2020-10-15 03:50:26,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:26,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:26,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:26,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:26,482 INFO L87 Difference]: Start difference. First operand 5452 states and 6993 transitions. Second operand 9 states. [2020-10-15 03:50:28,284 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 658 [2020-10-15 03:50:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:46,045 INFO L93 Difference]: Finished difference Result 13614 states and 17756 transitions. [2020-10-15 03:50:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:50:46,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:50:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:46,063 INFO L225 Difference]: With dead ends: 13614 [2020-10-15 03:50:46,063 INFO L226 Difference]: Without dead ends: 8971 [2020-10-15 03:50:46,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:50:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2020-10-15 03:50:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 7636. [2020-10-15 03:50:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7636 states. [2020-10-15 03:50:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 9727 transitions. [2020-10-15 03:50:46,759 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 9727 transitions. Word has length 71 [2020-10-15 03:50:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:46,760 INFO L479 AbstractCegarLoop]: Abstraction has 7636 states and 9727 transitions. [2020-10-15 03:50:46,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 9727 transitions. [2020-10-15 03:50:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:50:46,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:46,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:46,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:50:46,771 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1890800625, now seen corresponding path program 1 times [2020-10-15 03:50:46,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:46,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386479055] [2020-10-15 03:50:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:47,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking...