/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=BIGGEST --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/Problem05_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:56:02,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:56:02,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:56:02,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:56:02,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:56:02,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:56:02,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:56:02,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:56:02,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:56:02,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:56:02,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:56:02,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:56:02,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:56:02,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:56:02,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:56:02,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:56:02,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:56:02,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:56:02,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:56:02,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:56:02,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:56:02,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:56:02,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:56:02,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:56:02,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:56:02,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:56:02,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:56:02,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:56:02,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:56:02,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:56:02,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:56:02,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:56:02,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:56:02,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:56:02,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:56:02,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:56:02,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:56:02,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:56:02,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:56:02,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:56:02,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:56:02,069 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 [2020-10-12 11:56:02,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:56:02,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:56:02,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:56:02,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:56:02,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:56:02,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:56:02,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:56:02,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:56:02,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:56:02,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:56:02,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:56:02,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:56:02,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:56:02,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:56:02,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:56:02,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:56:02,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:56:02,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:56:02,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:56:02,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:56:02,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:56:02,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:56:02,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:56:02,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:56:02,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:56:02,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:56:02,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:56:02,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:56:02,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:56:02,103 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:56:02,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:56:02,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:56:02,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:56:02,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:56:02,465 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:56:02,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label35.c [2020-10-12 11:56:02,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/937ed5d9b/da7558b9676f4b99998b3921fad5fd5a/FLAG98101977a [2020-10-12 11:56:03,526 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:56:03,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label35.c [2020-10-12 11:56:03,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/937ed5d9b/da7558b9676f4b99998b3921fad5fd5a/FLAG98101977a [2020-10-12 11:56:03,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/937ed5d9b/da7558b9676f4b99998b3921fad5fd5a [2020-10-12 11:56:03,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:56:03,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:56:03,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:56:03,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:56:03,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:56:03,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:56:03" (1/1) ... [2020-10-12 11:56:03,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b1442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:03, skipping insertion in model container [2020-10-12 11:56:03,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:56:03" (1/1) ... [2020-10-12 11:56:03,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:56:04,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:56:06,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:56:06,238 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:56:07,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:56:07,700 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:56:07,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07 WrapperNode [2020-10-12 11:56:07,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:56:07,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:56:07,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:56:07,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:56:07,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:07,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:07,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:07,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:08,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:08,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:08,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (1/1) ... [2020-10-12 11:56:08,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:56:08,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:56:08,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:56:08,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:56:08,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (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 [2020-10-12 11:56:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:56:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:56:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:56:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:56:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:56:08,325 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:56:08,325 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:56:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:56:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:56:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:56:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:56:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:56:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:56:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:56:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:56:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:56:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:56:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:56:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:56:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:56:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:56:16,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:56:16,557 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:56:16,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:56:16 BoogieIcfgContainer [2020-10-12 11:56:16,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:56:16,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:56:16,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:56:16,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:56:16,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:56:03" (1/3) ... [2020-10-12 11:56:16,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e6880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:56:16, skipping insertion in model container [2020-10-12 11:56:16,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:56:07" (2/3) ... [2020-10-12 11:56:16,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e6880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:56:16, skipping insertion in model container [2020-10-12 11:56:16,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:56:16" (3/3) ... [2020-10-12 11:56:16,582 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label35.c [2020-10-12 11:56:16,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:56:16,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:56:16,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:56:16,649 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:56:16,649 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:56:16,649 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:56:16,649 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:56:16,649 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:56:16,649 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:56:16,650 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:56:16,650 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:56:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:56:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-12 11:56:16,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:56:16,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:56:16,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:56:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:56:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash 92203265, now seen corresponding path program 1 times [2020-10-12 11:56:16,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:56:16,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523595180] [2020-10-12 11:56:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:56:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:56:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:56:23,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:56:23,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1700 [2020-10-12 11:56:23,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:56:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5284 [2020-10-12 11:56:23,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:56:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:56:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:56:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1694 [2020-10-12 11:56:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 11:56:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:56:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:56:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:56:25,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:56:25,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:56:25,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:56:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:56:25,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:56:25,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:56:25,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:56:25,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:56:25,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:56:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:56:27,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523595180] [2020-10-12 11:56:27,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:56:27,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 11:56:27,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906212614] [2020-10-12 11:56:27,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 11:56:27,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:56:27,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 11:56:27,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 11:56:27,436 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-12 11:56:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:56:44,081 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-12 11:56:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:56:44,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1678 [2020-10-12 11:56:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:56:44,148 INFO L225 Difference]: With dead ends: 6311 [2020-10-12 11:56:44,148 INFO L226 Difference]: Without dead ends: 4025 [2020-10-12 11:56:44,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:56:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-12 11:56:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-12 11:56:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-12 11:56:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-12 11:56:44,378 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1678 [2020-10-12 11:56:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:56:44,383 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-12 11:56:44,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 11:56:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-12 11:56:44,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-12 11:56:44,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:56:44,562 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:56:44,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:56:44,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:56:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:56:44,563 INFO L82 PathProgramCache]: Analyzing trace with hash 462274806, now seen corresponding path program 1 times [2020-10-12 11:56:44,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:56:44,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064667246] [2020-10-12 11:56:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:56:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:56:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:56:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:56:49,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:56:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1711 [2020-10-12 11:56:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:56:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-12 11:56:49,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:56:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:56:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:56:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1691 [2020-10-12 11:56:49,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:56:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:56:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:56:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:56:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:56:50,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:56:50,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:56:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:56:50,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:56:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:56:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:56:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:56:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:56:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:56:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:56:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:56:50,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:56:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:56:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:56:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:56:50,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:56:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:56:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:56:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:56:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:56:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:56:52,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064667246] [2020-10-12 11:56:52,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:56:52,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:56:52,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601914076] [2020-10-12 11:56:52,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:56:52,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:56:52,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:56:52,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:56:52,992 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 5 states. [2020-10-12 11:57:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:57:11,705 INFO L93 Difference]: Finished difference Result 11638 states and 18922 transitions. [2020-10-12 11:57:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:57:11,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1687 [2020-10-12 11:57:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:57:11,749 INFO L225 Difference]: With dead ends: 11638 [2020-10-12 11:57:11,750 INFO L226 Difference]: Without dead ends: 7648 [2020-10-12 11:57:11,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:57:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7648 states. [2020-10-12 11:57:11,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7648 to 7570. [2020-10-12 11:57:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7570 states. [2020-10-12 11:57:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10961 transitions. [2020-10-12 11:57:11,988 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10961 transitions. Word has length 1687 [2020-10-12 11:57:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:57:11,991 INFO L479 AbstractCegarLoop]: Abstraction has 7570 states and 10961 transitions. [2020-10-12 11:57:11,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:57:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10961 transitions. [2020-10-12 11:57:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2020-10-12 11:57:12,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:57:12,118 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:57:12,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:57:12,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:57:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:57:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash -552711214, now seen corresponding path program 1 times [2020-10-12 11:57:12,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:57:12,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152985889] [2020-10-12 11:57:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:57:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:15,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1713 [2020-10-12 11:57:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:57:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-12 11:57:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:57:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:57:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1691 [2020-10-12 11:57:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:57:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:18,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:57:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:57:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:57:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:57:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:57:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:57:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:18,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:57:18,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:57:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:57:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:57:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 11:57:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:57:20,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152985889] [2020-10-12 11:57:20,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:57:20,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:57:20,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304770680] [2020-10-12 11:57:21,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:57:21,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:57:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:57:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:57:21,001 INFO L87 Difference]: Start difference. First operand 7570 states and 10961 transitions. Second operand 5 states. [2020-10-12 11:57:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:57:40,798 INFO L93 Difference]: Finished difference Result 18695 states and 27988 transitions. [2020-10-12 11:57:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:57:40,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1689 [2020-10-12 11:57:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:57:40,857 INFO L225 Difference]: With dead ends: 18695 [2020-10-12 11:57:40,857 INFO L226 Difference]: Without dead ends: 11131 [2020-10-12 11:57:40,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:57:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11131 states. [2020-10-12 11:57:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11131 to 11116. [2020-10-12 11:57:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11116 states. [2020-10-12 11:57:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11116 states to 11116 states and 15403 transitions. [2020-10-12 11:57:41,135 INFO L78 Accepts]: Start accepts. Automaton has 11116 states and 15403 transitions. Word has length 1689 [2020-10-12 11:57:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:57:41,138 INFO L479 AbstractCegarLoop]: Abstraction has 11116 states and 15403 transitions. [2020-10-12 11:57:41,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:57:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11116 states and 15403 transitions. [2020-10-12 11:57:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-12 11:57:41,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:57:41,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:57:41,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:57:41,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:57:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:57:41,196 INFO L82 PathProgramCache]: Analyzing trace with hash -808185582, now seen corresponding path program 1 times [2020-10-12 11:57:41,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:57:41,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131404389] [2020-10-12 11:57:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:57:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:46,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-12 11:57:46,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:57:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-12 11:57:46,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 11:57:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 11:57:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-12 11:57:46,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:52,746 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 11:57:52,890 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-12 11:57:53,021 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 11:57:53,153 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 11:57:53,285 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 11:57:53,427 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 11:57:54,383 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 11:57:54,557 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-10-12 11:57:54,782 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-12 11:57:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:57:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:54,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:57:54,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:57:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:57:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:57:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:57:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:54,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:57:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:54,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:54,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:57:54,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:57:54,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:57:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:57:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:57:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:57:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:57:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:57:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:57:54,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:57:54,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:57:54,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:57:54,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:57:54,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:57:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:57:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:57:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:57:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:58:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:58:15,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131404389] [2020-10-12 11:58:15,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:58:15,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 11:58:15,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418011546] [2020-10-12 11:58:15,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 11:58:15,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:58:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 11:58:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:58:15,368 INFO L87 Difference]: Start difference. First operand 11116 states and 15403 transitions. Second operand 23 states. [2020-10-12 11:58:16,331 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-12 11:58:17,929 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-12 11:58:27,570 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-12 11:58:38,032 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-12 11:58:43,357 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-12 11:58:48,995 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 11:59:00,251 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 11:59:02,956 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 11:59:05,742 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-12 11:59:11,995 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 11:59:14,197 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-12 11:59:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:59:34,450 INFO L93 Difference]: Finished difference Result 23524 states and 33445 transitions. [2020-10-12 11:59:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 11:59:34,454 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1704 [2020-10-12 11:59:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:59:34,508 INFO L225 Difference]: With dead ends: 23524 [2020-10-12 11:59:34,508 INFO L226 Difference]: Without dead ends: 12414 [2020-10-12 11:59:34,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 11:59:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12414 states. [2020-10-12 11:59:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12414 to 12402. [2020-10-12 11:59:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12402 states. [2020-10-12 11:59:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12402 states to 12402 states and 16716 transitions. [2020-10-12 11:59:34,794 INFO L78 Accepts]: Start accepts. Automaton has 12402 states and 16716 transitions. Word has length 1704 [2020-10-12 11:59:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:59:34,797 INFO L479 AbstractCegarLoop]: Abstraction has 12402 states and 16716 transitions. [2020-10-12 11:59:34,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 11:59:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 12402 states and 16716 transitions. [2020-10-12 11:59:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-12 11:59:34,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:59:34,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:59:34,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:59:34,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:59:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:59:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash -186815742, now seen corresponding path program 1 times [2020-10-12 11:59:34,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:59:34,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103934783] [2020-10-12 11:59:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:59:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:59:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:40,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:59:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-12 11:59:40,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:59:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 11:59:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:59:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:59:40,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:59:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:59:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 11:59:40,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:59:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:59:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:40,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:59:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:59:40,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:59:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:59:40,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:59:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:59:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:59:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:59:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:59:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:59:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:59:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:40,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:59:40,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:59:40,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:59:40,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:59:40,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:59:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:59:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:59:40,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:59:40,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:59:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:59:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:59:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:40,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:59:40,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:59:40,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 11:59:40,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:59:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:59:40,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:59:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:59:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 11:59:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:59:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:59:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:59:41,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103934783] [2020-10-12 11:59:41,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:59:41,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:59:41,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34404579] [2020-10-12 11:59:41,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:59:41,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:59:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:59:41,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:59:41,633 INFO L87 Difference]: Start difference. First operand 12402 states and 16716 transitions. Second operand 9 states.