/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=NARROWEST --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/eca-rers2012/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:17:56,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:17:56,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:17:56,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:17:56,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:17:56,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:17:56,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:17:56,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:17:56,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:17:56,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:17:56,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:17:56,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:17:56,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:17:56,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:17:56,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:17:56,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:17:56,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:17:56,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:17:56,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:17:56,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:17:56,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:17:56,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:17:56,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:17:56,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:17:56,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:17:56,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:17:56,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:17:56,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:17:56,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:17:56,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:17:56,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:17:56,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:17:56,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:17:56,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:17:56,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:17:56,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:17:56,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:17:56,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:17:56,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:17:56,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:17:56,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:17:56,178 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 [2020-10-13 08:17:56,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:17:56,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:17:56,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:17:56,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:17:56,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:17:56,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:17:56,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:17:56,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:17:56,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:17:56,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:17:56,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:17:56,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:17:56,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:17:56,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:17:56,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:17:56,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:17:56,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:17:56,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:17:56,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:17:56,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:17:56,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:17:56,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:17:56,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:17:56,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:17:56,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:17:56,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:17:56,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:17:56,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:17:56,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:17:56,226 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:17:56,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:17:56,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:17:56,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:17:56,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:17:56,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:17:56,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-13 08:17:56,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a74bf8cd/031f4457e06a4ea9b3cf17fc9f18140a/FLAG860bdc77c [2020-10-13 08:17:57,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:17:57,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-13 08:17:57,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a74bf8cd/031f4457e06a4ea9b3cf17fc9f18140a/FLAG860bdc77c [2020-10-13 08:17:58,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a74bf8cd/031f4457e06a4ea9b3cf17fc9f18140a [2020-10-13 08:17:58,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:17:58,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:17:58,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:17:58,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:17:58,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:17:58,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:17:58" (1/1) ... [2020-10-13 08:17:58,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5335cf9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:58, skipping insertion in model container [2020-10-13 08:17:58,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:17:58" (1/1) ... [2020-10-13 08:17:58,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:17:58,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:18:00,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:18:00,573 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:18:01,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:18:01,612 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:18:01,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01 WrapperNode [2020-10-13 08:18:01,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:18:01,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:18:01,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:18:01,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:18:01,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (1/1) ... [2020-10-13 08:18:01,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:18:01,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:18:01,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:18:01,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:18:01,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (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 [2020-10-13 08:18:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:18:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:18:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:18:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:18:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:18:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:18:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:18:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:18:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:18:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:18:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:18:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:18:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:18:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:18:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:18:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:18:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:18:08,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:18:08,883 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:18:08,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:18:08 BoogieIcfgContainer [2020-10-13 08:18:08,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:18:08,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:18:08,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:18:08,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:18:08,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:17:58" (1/3) ... [2020-10-13 08:18:08,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e99afa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:18:08, skipping insertion in model container [2020-10-13 08:18:08,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:01" (2/3) ... [2020-10-13 08:18:08,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e99afa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:18:08, skipping insertion in model container [2020-10-13 08:18:08,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:18:08" (3/3) ... [2020-10-13 08:18:08,931 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2020-10-13 08:18:08,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:18:08,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:18:08,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:18:09,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:18:09,043 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:18:09,043 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:18:09,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:18:09,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:18:09,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:18:09,044 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:18:09,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:18:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:18:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 08:18:09,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:09,145 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] [2020-10-13 08:18:09,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:09,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1315979506, now seen corresponding path program 1 times [2020-10-13 08:18:09,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:09,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369413376] [2020-10-13 08:18:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:09,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:10,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:10,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:18:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-13 08:18:10,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:18:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:18:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:18:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:18:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:10,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:10,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:10,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:18:10,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:18:10,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:10,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369413376] [2020-10-13 08:18:10,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:18:10,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:18:10,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20386020] [2020-10-13 08:18:10,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:10,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:10,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:10,514 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:18:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:24,051 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-13 08:18:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:18:24,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 08:18:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:24,103 INFO L225 Difference]: With dead ends: 3253 [2020-10-13 08:18:24,104 INFO L226 Difference]: Without dead ends: 2346 [2020-10-13 08:18:24,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-13 08:18:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-13 08:18:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-13 08:18:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-13 08:18:24,304 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 71 [2020-10-13 08:18:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:24,305 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-13 08:18:24,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-13 08:18:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 08:18:24,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:24,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:24,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:18:24,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -159355990, now seen corresponding path program 1 times [2020-10-13 08:18:24,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:24,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989626697] [2020-10-13 08:18:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 08:18:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-10-13 08:18:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:18:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:18:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:18:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:25,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:25,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:25,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:18:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:25,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:26,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:26,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:18:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:18:26,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:18:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:26,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989626697] [2020-10-13 08:18:26,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:26,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:18:26,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723670973] [2020-10-13 08:18:26,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:18:26,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:26,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:18:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:26,270 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 6 states. [2020-10-13 08:18:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:36,635 INFO L93 Difference]: Finished difference Result 7012 states and 11662 transitions. [2020-10-13 08:18:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:36,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-10-13 08:18:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:36,669 INFO L225 Difference]: With dead ends: 7012 [2020-10-13 08:18:36,669 INFO L226 Difference]: Without dead ends: 4687 [2020-10-13 08:18:36,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2020-10-13 08:18:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4672. [2020-10-13 08:18:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2020-10-13 08:18:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 7627 transitions. [2020-10-13 08:18:36,827 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 7627 transitions. Word has length 149 [2020-10-13 08:18:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:36,828 INFO L479 AbstractCegarLoop]: Abstraction has 4672 states and 7627 transitions. [2020-10-13 08:18:36,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:18:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 7627 transitions. [2020-10-13 08:18:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 08:18:36,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:36,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:36,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:18:36,834 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1488141347, now seen corresponding path program 1 times [2020-10-13 08:18:36,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:36,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66417958] [2020-10-13 08:18:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:37,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:37,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 08:18:37,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:18:37,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-13 08:18:37,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:18:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:18:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:38,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:38,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:38,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:38,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:18:38,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:38,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:38,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:18:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:18:38,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:18:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:38,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66417958] [2020-10-13 08:18:38,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:38,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:38,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615862828] [2020-10-13 08:18:38,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:38,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:38,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:38,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:38,375 INFO L87 Difference]: Start difference. First operand 4672 states and 7627 transitions. Second operand 5 states. [2020-10-13 08:18:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:49,915 INFO L93 Difference]: Finished difference Result 14009 states and 23232 transitions. [2020-10-13 08:18:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:49,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 08:18:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:49,966 INFO L225 Difference]: With dead ends: 14009 [2020-10-13 08:18:49,966 INFO L226 Difference]: Without dead ends: 9343 [2020-10-13 08:18:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9343 states. [2020-10-13 08:18:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9343 to 9339. [2020-10-13 08:18:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9339 states. [2020-10-13 08:18:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 13420 transitions. [2020-10-13 08:18:50,251 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 13420 transitions. Word has length 174 [2020-10-13 08:18:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:50,254 INFO L479 AbstractCegarLoop]: Abstraction has 9339 states and 13420 transitions. [2020-10-13 08:18:50,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 13420 transitions. [2020-10-13 08:18:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-13 08:18:50,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:50,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:50,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:18:50,264 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1717971578, now seen corresponding path program 1 times [2020-10-13 08:18:50,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:50,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012221732] [2020-10-13 08:18:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:51,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:51,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 08:18:51,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-13 08:18:51,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:18:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:18:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:51,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:51,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:51,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:18:51,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:51,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:51,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:18:51,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 08:18:51,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:18:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:18:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:51,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012221732] [2020-10-13 08:18:51,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:51,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:51,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616841877] [2020-10-13 08:18:51,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:51,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:51,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:51,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:51,832 INFO L87 Difference]: Start difference. First operand 9339 states and 13420 transitions. Second operand 5 states. [2020-10-13 08:19:03,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:03,658 INFO L93 Difference]: Finished difference Result 26420 states and 38894 transitions. [2020-10-13 08:19:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:03,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-13 08:19:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:03,733 INFO L225 Difference]: With dead ends: 26420 [2020-10-13 08:19:03,733 INFO L226 Difference]: Without dead ends: 17087 [2020-10-13 08:19:03,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17087 states. [2020-10-13 08:19:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17087 to 17083. [2020-10-13 08:19:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17083 states. [2020-10-13 08:19:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17083 states to 17083 states and 22794 transitions. [2020-10-13 08:19:04,218 INFO L78 Accepts]: Start accepts. Automaton has 17083 states and 22794 transitions. Word has length 189 [2020-10-13 08:19:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:04,220 INFO L479 AbstractCegarLoop]: Abstraction has 17083 states and 22794 transitions. [2020-10-13 08:19:04,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17083 states and 22794 transitions. [2020-10-13 08:19:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-13 08:19:04,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:04,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:04,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:19:04,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:04,230 INFO L82 PathProgramCache]: Analyzing trace with hash -25610105, now seen corresponding path program 1 times [2020-10-13 08:19:04,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:04,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967715871] [2020-10-13 08:19:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 08:19:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:19:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1705 [2020-10-13 08:19:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:19:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:19:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:06,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:06,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:06,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:19:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:06,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:06,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:19:06,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:19:06,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:19:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:19:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:06,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:19:06,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:19:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 08:19:06,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:19:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:19:06,690 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-13 08:19:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:19:07,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967715871] [2020-10-13 08:19:07,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:07,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:07,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493141562] [2020-10-13 08:19:07,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:07,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:07,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:07,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:07,049 INFO L87 Difference]: Start difference. First operand 17083 states and 22794 transitions. Second operand 7 states. [2020-10-13 08:19:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:16,797 INFO L93 Difference]: Finished difference Result 34392 states and 46293 transitions. [2020-10-13 08:19:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:19:16,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-13 08:19:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:16,865 INFO L225 Difference]: With dead ends: 34392 [2020-10-13 08:19:16,866 INFO L226 Difference]: Without dead ends: 17202 [2020-10-13 08:19:16,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:19:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17202 states. [2020-10-13 08:19:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17202 to 17128. [2020-10-13 08:19:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17128 states. [2020-10-13 08:19:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17128 states to 17128 states and 21823 transitions. [2020-10-13 08:19:17,280 INFO L78 Accepts]: Start accepts. Automaton has 17128 states and 21823 transitions. Word has length 226 [2020-10-13 08:19:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:17,280 INFO L479 AbstractCegarLoop]: Abstraction has 17128 states and 21823 transitions. [2020-10-13 08:19:17,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:19:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17128 states and 21823 transitions. [2020-10-13 08:19:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 08:19:17,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:17,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:17,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:19:17,289 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:17,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1004050018, now seen corresponding path program 1 times [2020-10-13 08:19:17,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:17,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752222452] [2020-10-13 08:19:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 08:19:21,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:19:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-10-13 08:19:21,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 08:19:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:19:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:21,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:19:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:19:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:19:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:21,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:19:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:19:21,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:21,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:19:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:19:21,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752222452] [2020-10-13 08:19:21,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:21,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:21,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807574110] [2020-10-13 08:19:21,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:21,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:21,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:21,582 INFO L87 Difference]: Start difference. First operand 17128 states and 21823 transitions. Second operand 5 states. [2020-10-13 08:19:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:33,738 INFO L93 Difference]: Finished difference Result 42785 states and 56603 transitions. [2020-10-13 08:19:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:33,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-13 08:19:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:33,839 INFO L225 Difference]: With dead ends: 42785 [2020-10-13 08:19:33,839 INFO L226 Difference]: Without dead ends: 25663 [2020-10-13 08:19:33,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25663 states. [2020-10-13 08:19:34,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25663 to 24114. [2020-10-13 08:19:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24114 states. [2020-10-13 08:19:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24114 states to 24114 states and 30326 transitions. [2020-10-13 08:19:34,377 INFO L78 Accepts]: Start accepts. Automaton has 24114 states and 30326 transitions. Word has length 227 [2020-10-13 08:19:34,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:34,378 INFO L479 AbstractCegarLoop]: Abstraction has 24114 states and 30326 transitions. [2020-10-13 08:19:34,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24114 states and 30326 transitions. [2020-10-13 08:19:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-13 08:19:34,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:34,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:34,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:19:34,397 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:34,398 INFO L82 PathProgramCache]: Analyzing trace with hash 96310575, now seen corresponding path program 1 times [2020-10-13 08:19:34,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:34,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953399842] [2020-10-13 08:19:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 08:19:39,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:19:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4772 [2020-10-13 08:19:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-13 08:19:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:19:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:39,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:19:39,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:19:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:39,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:19:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:39,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:19:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:19:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:19:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:19:39,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953399842] [2020-10-13 08:19:39,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:39,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:39,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852510340] [2020-10-13 08:19:39,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:39,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:39,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:39,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:39,599 INFO L87 Difference]: Start difference. First operand 24114 states and 30326 transitions. Second operand 5 states. [2020-10-13 08:19:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:51,656 INFO L93 Difference]: Finished difference Result 63765 states and 82990 transitions. [2020-10-13 08:19:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:51,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-13 08:19:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:51,785 INFO L225 Difference]: With dead ends: 63765 [2020-10-13 08:19:51,786 INFO L226 Difference]: Without dead ends: 39657 [2020-10-13 08:19:51,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39657 states. [2020-10-13 08:19:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39657 to 38868. [2020-10-13 08:19:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38868 states. [2020-10-13 08:19:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38868 states to 38868 states and 48553 transitions. [2020-10-13 08:19:52,875 INFO L78 Accepts]: Start accepts. Automaton has 38868 states and 48553 transitions. Word has length 266 [2020-10-13 08:19:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:52,876 INFO L479 AbstractCegarLoop]: Abstraction has 38868 states and 48553 transitions. [2020-10-13 08:19:52,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 38868 states and 48553 transitions. [2020-10-13 08:19:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 08:19:52,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:52,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:52,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:19:52,893 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1985598427, now seen corresponding path program 1 times [2020-10-13 08:19:52,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:52,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879454794] [2020-10-13 08:19:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:56,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:56,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 08:19:56,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:56,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3648 [2020-10-13 08:19:56,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 08:19:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:19:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:56,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:56,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:56,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:56,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:19:56,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:19:56,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:56,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 08:19:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:56,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:19:56,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 08:19:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:19:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 08:19:57,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879454794] [2020-10-13 08:19:57,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:57,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:57,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711351923] [2020-10-13 08:19:57,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:57,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:57,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:57,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:57,126 INFO L87 Difference]: Start difference. First operand 38868 states and 48553 transitions. Second operand 5 states. [2020-10-13 08:20:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:14,794 INFO L93 Difference]: Finished difference Result 98690 states and 127870 transitions. [2020-10-13 08:20:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:14,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-13 08:20:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:15,036 INFO L225 Difference]: With dead ends: 98690 [2020-10-13 08:20:15,037 INFO L226 Difference]: Without dead ends: 59828 [2020-10-13 08:20:15,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59828 states. [2020-10-13 08:20:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59828 to 59042. [2020-10-13 08:20:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59042 states. [2020-10-13 08:20:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59042 states to 59042 states and 75003 transitions. [2020-10-13 08:20:16,501 INFO L78 Accepts]: Start accepts. Automaton has 59042 states and 75003 transitions. Word has length 284 [2020-10-13 08:20:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:16,502 INFO L479 AbstractCegarLoop]: Abstraction has 59042 states and 75003 transitions. [2020-10-13 08:20:16,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 59042 states and 75003 transitions. [2020-10-13 08:20:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 08:20:16,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:16,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:16,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:20:16,523 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:16,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1424604015, now seen corresponding path program 1 times [2020-10-13 08:20:16,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:16,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041064910] [2020-10-13 08:20:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:20,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:20,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:20:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:20:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3993 [2020-10-13 08:20:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:20:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:20:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:20,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:20,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:20,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:20,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:20:20,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:20,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:20,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:20:20,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:20:20,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:20:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:20,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:20,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:20:20,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 08:20:20,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 08:20:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:20:21,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041064910] [2020-10-13 08:20:21,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:21,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:21,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295144512] [2020-10-13 08:20:21,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:21,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:21,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:21,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:21,277 INFO L87 Difference]: Start difference. First operand 59042 states and 75003 transitions. Second operand 5 states. [2020-10-13 08:20:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:37,094 INFO L93 Difference]: Finished difference Result 127378 states and 166528 transitions. [2020-10-13 08:20:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:37,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-13 08:20:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:37,298 INFO L225 Difference]: With dead ends: 127378 [2020-10-13 08:20:37,299 INFO L226 Difference]: Without dead ends: 68342 [2020-10-13 08:20:37,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68342 states. [2020-10-13 08:20:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68342 to 64499. [2020-10-13 08:20:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64499 states. [2020-10-13 08:20:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64499 states to 64499 states and 81568 transitions. [2020-10-13 08:20:38,726 INFO L78 Accepts]: Start accepts. Automaton has 64499 states and 81568 transitions. Word has length 298 [2020-10-13 08:20:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:38,727 INFO L479 AbstractCegarLoop]: Abstraction has 64499 states and 81568 transitions. [2020-10-13 08:20:38,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 64499 states and 81568 transitions. [2020-10-13 08:20:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-13 08:20:38,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:38,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:38,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:20:38,771 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:38,771 INFO L82 PathProgramCache]: Analyzing trace with hash -643168273, now seen corresponding path program 1 times [2020-10-13 08:20:38,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:38,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839169796] [2020-10-13 08:20:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:43,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:43,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:20:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:44,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:44,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:44,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:20:44,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:20:44,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:20:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:44,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:44,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:20:44,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:20:44,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 08:20:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:20:44,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839169796] [2020-10-13 08:20:44,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:44,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:44,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945506119] [2020-10-13 08:20:44,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:44,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:44,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:44,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:44,324 INFO L87 Difference]: Start difference. First operand 64499 states and 81568 transitions. Second operand 5 states. [2020-10-13 08:20:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:58,092 INFO L93 Difference]: Finished difference Result 129016 states and 163343 transitions. [2020-10-13 08:20:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:58,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-13 08:20:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:58,298 INFO L225 Difference]: With dead ends: 129016 [2020-10-13 08:20:58,298 INFO L226 Difference]: Without dead ends: 64507 [2020-10-13 08:20:58,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64507 states. [2020-10-13 08:20:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64507 to 64499. [2020-10-13 08:20:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64499 states. [2020-10-13 08:20:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64499 states to 64499 states and 81536 transitions. [2020-10-13 08:20:59,504 INFO L78 Accepts]: Start accepts. Automaton has 64499 states and 81536 transitions. Word has length 362 [2020-10-13 08:20:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:59,505 INFO L479 AbstractCegarLoop]: Abstraction has 64499 states and 81536 transitions. [2020-10-13 08:20:59,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 64499 states and 81536 transitions. [2020-10-13 08:20:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-13 08:20:59,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:59,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:59,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:20:59,539 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash -328366939, now seen corresponding path program 1 times [2020-10-13 08:20:59,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:59,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638804004] [2020-10-13 08:20:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:04,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:04,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-13 08:21:04,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:21:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 08:21:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-13 08:21:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:21:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:04,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 08:21:05,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 08:21:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-13 08:21:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:21:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:05,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:05,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 08:21:05,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:05,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:21:05,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:05,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:21:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:21:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:05,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638804004] [2020-10-13 08:21:05,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:05,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:05,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235166465] [2020-10-13 08:21:05,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:05,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:05,560 INFO L87 Difference]: Start difference. First operand 64499 states and 81536 transitions. Second operand 5 states. [2020-10-13 08:21:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:25,047 INFO L93 Difference]: Finished difference Result 151451 states and 193876 transitions. [2020-10-13 08:21:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:25,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 389 [2020-10-13 08:21:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:25,055 INFO L225 Difference]: With dead ends: 151451 [2020-10-13 08:21:25,055 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 08:21:25,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 08:21:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 08:21:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 08:21:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 08:21:25,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 389 [2020-10-13 08:21:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:25,794 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 08:21:25,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 08:21:25,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 08:21:25,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:21:25,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 08:21:33,824 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 143 [2020-10-13 08:21:34,124 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 143