/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:11:54,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:11:54,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:11:54,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:11:54,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:11:54,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:11:54,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:11:54,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:11:54,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:11:54,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:11:54,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:11:54,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:11:54,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:11:54,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:11:54,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:11:54,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:11:54,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:11:54,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:11:54,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:11:54,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:11:54,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:11:54,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:11:54,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:11:54,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:11:54,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:11:54,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:11:54,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:11:54,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:11:54,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:11:54,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:11:54,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:11:54,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:11:54,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:11:54,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:11:54,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:11:54,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:11:54,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:11:54,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:11:54,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:11:54,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:11:54,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:11:54,135 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 [2020-10-14 21:11:54,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:11:54,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:11:54,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:11:54,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:11:54,163 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:11:54,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:11:54,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:11:54,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:11:54,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:11:54,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:11:54,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:11:54,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:11:54,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:11:54,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:11:54,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:11:54,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:11:54,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:11:54,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:11:54,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:11:54,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:11:54,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:11:54,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:11:54,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:11:54,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:11:54,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:11:54,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:11:54,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:11:54,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:11:54,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:11:54,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:11:54,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:11:54,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:11:54,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:11:54,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:11:54,511 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:11:54,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27.c [2020-10-14 21:11:54,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a388011a/40f5a3ca05d4450c98f67a96d7a5cf1b/FLAGa63ccedcc [2020-10-14 21:11:55,371 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:11:55,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label27.c [2020-10-14 21:11:55,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a388011a/40f5a3ca05d4450c98f67a96d7a5cf1b/FLAGa63ccedcc [2020-10-14 21:11:55,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a388011a/40f5a3ca05d4450c98f67a96d7a5cf1b [2020-10-14 21:11:55,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:11:55,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:11:55,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:11:55,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:11:55,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:11:55,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:11:55" (1/1) ... [2020-10-14 21:11:55,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb21d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:55, skipping insertion in model container [2020-10-14 21:11:55,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:11:55" (1/1) ... [2020-10-14 21:11:55,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:11:56,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:11:57,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:11:57,882 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:11:58,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:11:58,610 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:11:58,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58 WrapperNode [2020-10-14 21:11:58,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:11:58,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:11:58,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:11:58,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:11:58,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (1/1) ... [2020-10-14 21:11:58,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:11:58,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:11:58,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:11:58,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:11:58,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (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 [2020-10-14 21:11:58,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:11:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:11:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:11:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:11:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:11:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:11:58,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:11:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:11:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:11:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:11:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:11:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:11:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:11:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:11:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:11:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:11:58,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:12:04,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:12:04,384 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:12:04,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:12:04 BoogieIcfgContainer [2020-10-14 21:12:04,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:12:04,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:12:04,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:12:04,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:12:04,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:11:55" (1/3) ... [2020-10-14 21:12:04,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da1aa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:12:04, skipping insertion in model container [2020-10-14 21:12:04,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:58" (2/3) ... [2020-10-14 21:12:04,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da1aa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:12:04, skipping insertion in model container [2020-10-14 21:12:04,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:12:04" (3/3) ... [2020-10-14 21:12:04,419 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label27.c [2020-10-14 21:12:04,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:12:04,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:12:04,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:12:04,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:12:04,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:12:04,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:12:04,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:12:04,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:12:04,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:12:04,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:12:04,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:12:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:12:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 21:12:04,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:04,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:12:04,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:04,552 INFO L82 PathProgramCache]: Analyzing trace with hash -780203766, now seen corresponding path program 1 times [2020-10-14 21:12:04,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:04,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62439609] [2020-10-14 21:12:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:05,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 21:12:05,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:05,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-14 21:12:05,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:05,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:12:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:12:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 21:12:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:12:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:05,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:05,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:05,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:05,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:12:05,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:05,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:12:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:12:05,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62439609] [2020-10-14 21:12:05,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:12:05,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:12:05,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138289987] [2020-10-14 21:12:05,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:12:05,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:12:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:12:05,338 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:12:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:15,915 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 21:12:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:12:15,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 21:12:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:16,082 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 21:12:16,083 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:12:16,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:12:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:12:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 21:12:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 21:12:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 21:12:16,257 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 37 [2020-10-14 21:12:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:16,258 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 21:12:16,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:12:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 21:12:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 21:12:16,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:16,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:12:16,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:12:16,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash -237318741, now seen corresponding path program 1 times [2020-10-14 21:12:16,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:16,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236264004] [2020-10-14 21:12:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 21:12:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:12:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-14 21:12:17,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:17,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:12:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:12:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 21:12:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:12:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:17,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:17,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:17,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:17,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 21:12:17,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:17,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:12:17,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:18,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:12:18,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:12:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 21:12:18,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:18,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:12:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:12:18,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236264004] [2020-10-14 21:12:18,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:12:18,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:12:18,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626279238] [2020-10-14 21:12:18,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:12:18,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:12:18,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:12:18,180 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-14 21:12:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:33,285 INFO L93 Difference]: Finished difference Result 6242 states and 10090 transitions. [2020-10-14 21:12:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:12:33,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-14 21:12:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:33,313 INFO L225 Difference]: With dead ends: 6242 [2020-10-14 21:12:33,314 INFO L226 Difference]: Without dead ends: 4684 [2020-10-14 21:12:33,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:12:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2020-10-14 21:12:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 4676. [2020-10-14 21:12:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2020-10-14 21:12:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7102 transitions. [2020-10-14 21:12:33,466 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7102 transitions. Word has length 116 [2020-10-14 21:12:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:33,467 INFO L479 AbstractCegarLoop]: Abstraction has 4676 states and 7102 transitions. [2020-10-14 21:12:33,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:12:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7102 transitions. [2020-10-14 21:12:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 21:12:33,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:33,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:12:33,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:12:33,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1163433999, now seen corresponding path program 1 times [2020-10-14 21:12:33,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:33,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730119442] [2020-10-14 21:12:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:34,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 21:12:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:12:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-10-14 21:12:34,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:34,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:12:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:12:34,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:12:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:34,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:12:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:34,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:12:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:34,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:34,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:34,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:12:34,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:34,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 21:12:34,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:34,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:12:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:12:34,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730119442] [2020-10-14 21:12:34,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:12:34,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:12:34,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790741051] [2020-10-14 21:12:34,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:12:34,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:34,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:12:34,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:12:34,721 INFO L87 Difference]: Start difference. First operand 4676 states and 7102 transitions. Second operand 7 states. [2020-10-14 21:12:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:51,260 INFO L93 Difference]: Finished difference Result 14324 states and 23262 transitions. [2020-10-14 21:12:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:12:51,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 21:12:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:51,331 INFO L225 Difference]: With dead ends: 14324 [2020-10-14 21:12:51,331 INFO L226 Difference]: Without dead ends: 9654 [2020-10-14 21:12:51,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:12:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2020-10-14 21:12:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 9488. [2020-10-14 21:12:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9488 states. [2020-10-14 21:12:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9488 states to 9488 states and 14060 transitions. [2020-10-14 21:12:51,679 INFO L78 Accepts]: Start accepts. Automaton has 9488 states and 14060 transitions. Word has length 118 [2020-10-14 21:12:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:51,679 INFO L479 AbstractCegarLoop]: Abstraction has 9488 states and 14060 transitions. [2020-10-14 21:12:51,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:12:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9488 states and 14060 transitions. [2020-10-14 21:12:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 21:12:51,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:51,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:12:51,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:12:51,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2062177495, now seen corresponding path program 1 times [2020-10-14 21:12:51,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:51,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040326091] [2020-10-14 21:12:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:52,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:52,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:12:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:12:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-14 21:12:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:52,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:12:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:12:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:12:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:52,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:12:52,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:52,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:12:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:52,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:52,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:12:52,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:52,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:12:52,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:52,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:52,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:52,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:52,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:12:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:12:52,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040326091] [2020-10-14 21:12:52,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:12:52,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:12:52,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638309345] [2020-10-14 21:12:52,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:12:52,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:52,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:12:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:12:52,945 INFO L87 Difference]: Start difference. First operand 9488 states and 14060 transitions. Second operand 7 states. [2020-10-14 21:13:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:09,618 INFO L93 Difference]: Finished difference Result 28043 states and 43076 transitions. [2020-10-14 21:13:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:13:09,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-14 21:13:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:09,718 INFO L225 Difference]: With dead ends: 28043 [2020-10-14 21:13:09,718 INFO L226 Difference]: Without dead ends: 18561 [2020-10-14 21:13:09,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:13:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18561 states. [2020-10-14 21:13:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18561 to 17660. [2020-10-14 21:13:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17660 states. [2020-10-14 21:13:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17660 states to 17660 states and 25608 transitions. [2020-10-14 21:13:10,328 INFO L78 Accepts]: Start accepts. Automaton has 17660 states and 25608 transitions. Word has length 122 [2020-10-14 21:13:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:10,330 INFO L479 AbstractCegarLoop]: Abstraction has 17660 states and 25608 transitions. [2020-10-14 21:13:10,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:13:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 17660 states and 25608 transitions. [2020-10-14 21:13:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 21:13:10,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:10,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:10,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:13:10,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:10,342 INFO L82 PathProgramCache]: Analyzing trace with hash 604444374, now seen corresponding path program 1 times [2020-10-14 21:13:10,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:10,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039775669] [2020-10-14 21:13:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 21:13:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-14 21:13:11,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:11,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:13:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:11,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:11,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:13:11,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:11,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:13:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 21:13:11,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:11,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:13:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:13:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:13:11,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039775669] [2020-10-14 21:13:11,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:13:11,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:13:11,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375595911] [2020-10-14 21:13:11,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:13:11,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:11,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:13:11,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:13:11,822 INFO L87 Difference]: Start difference. First operand 17660 states and 25608 transitions. Second operand 7 states. [2020-10-14 21:13:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:28,348 INFO L93 Difference]: Finished difference Result 35915 states and 52831 transitions. [2020-10-14 21:13:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:13:28,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-14 21:13:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:28,423 INFO L225 Difference]: With dead ends: 35915 [2020-10-14 21:13:28,424 INFO L226 Difference]: Without dead ends: 19028 [2020-10-14 21:13:28,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:13:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19028 states. [2020-10-14 21:13:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19028 to 18842. [2020-10-14 21:13:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18842 states. [2020-10-14 21:13:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18842 states to 18842 states and 25216 transitions. [2020-10-14 21:13:28,966 INFO L78 Accepts]: Start accepts. Automaton has 18842 states and 25216 transitions. Word has length 157 [2020-10-14 21:13:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:28,966 INFO L479 AbstractCegarLoop]: Abstraction has 18842 states and 25216 transitions. [2020-10-14 21:13:28,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:13:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 18842 states and 25216 transitions. [2020-10-14 21:13:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 21:13:28,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:28,970 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, 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] [2020-10-14 21:13:28,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:13:28,971 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash 789425239, now seen corresponding path program 1 times [2020-10-14 21:13:28,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:28,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914065041] [2020-10-14 21:13:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:31,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:31,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 21:13:31,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:13:31,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-10-14 21:13:31,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:31,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:13:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:13:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:31,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:13:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:31,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:31,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:31,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:13:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:13:31,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:31,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:13:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:13:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:31,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:31,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:13:31,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 21:13:31,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:31,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:13:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:13:31,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914065041] [2020-10-14 21:13:31,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:31,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:13:31,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734404508] [2020-10-14 21:13:31,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:13:31,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:31,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:13:31,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:13:31,685 INFO L87 Difference]: Start difference. First operand 18842 states and 25216 transitions. Second operand 5 states. [2020-10-14 21:13:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:44,637 INFO L93 Difference]: Finished difference Result 45625 states and 63459 transitions. [2020-10-14 21:13:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:13:44,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 21:13:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:44,736 INFO L225 Difference]: With dead ends: 45625 [2020-10-14 21:13:44,736 INFO L226 Difference]: Without dead ends: 27556 [2020-10-14 21:13:44,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:13:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27556 states. [2020-10-14 21:13:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27556 to 26742. [2020-10-14 21:13:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26742 states. [2020-10-14 21:13:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26742 states to 26742 states and 36574 transitions. [2020-10-14 21:13:45,346 INFO L78 Accepts]: Start accepts. Automaton has 26742 states and 36574 transitions. Word has length 220 [2020-10-14 21:13:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:45,346 INFO L479 AbstractCegarLoop]: Abstraction has 26742 states and 36574 transitions. [2020-10-14 21:13:45,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:13:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 26742 states and 36574 transitions. [2020-10-14 21:13:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 21:13:45,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:45,351 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, 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] [2020-10-14 21:13:45,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:13:45,352 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:45,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:45,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1009754006, now seen corresponding path program 1 times [2020-10-14 21:13:45,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:45,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957654049] [2020-10-14 21:13:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:47,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:47,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 21:13:47,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:13:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-14 21:13:47,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:47,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:13:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:13:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:47,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:47,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:47,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:13:47,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:47,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:47,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:47,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:13:47,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:47,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 21:13:47,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:47,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:47,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:47,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:47,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:13:47,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:13:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:47,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:13:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 21:13:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:13:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:13:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:13:48,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957654049] [2020-10-14 21:13:48,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:48,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:13:48,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197397368] [2020-10-14 21:13:48,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:13:48,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:48,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:13:48,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:13:48,029 INFO L87 Difference]: Start difference. First operand 26742 states and 36574 transitions. Second operand 8 states. [2020-10-14 21:14:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:19,499 INFO L93 Difference]: Finished difference Result 110112 states and 170133 transitions. [2020-10-14 21:14:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:14:19,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-14 21:14:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:19,826 INFO L225 Difference]: With dead ends: 110112 [2020-10-14 21:14:19,826 INFO L226 Difference]: Without dead ends: 84143 [2020-10-14 21:14:19,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:14:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84143 states. [2020-10-14 21:14:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84143 to 81752. [2020-10-14 21:14:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81752 states. [2020-10-14 21:14:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81752 states to 81752 states and 115344 transitions. [2020-10-14 21:14:23,916 INFO L78 Accepts]: Start accepts. Automaton has 81752 states and 115344 transitions. Word has length 225 [2020-10-14 21:14:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:23,916 INFO L479 AbstractCegarLoop]: Abstraction has 81752 states and 115344 transitions. [2020-10-14 21:14:23,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:14:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 81752 states and 115344 transitions. [2020-10-14 21:14:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-14 21:14:23,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:23,926 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, 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] [2020-10-14 21:14:23,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:14:23,926 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:23,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:23,927 INFO L82 PathProgramCache]: Analyzing trace with hash -697912298, now seen corresponding path program 1 times [2020-10-14 21:14:23,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:23,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458350890] [2020-10-14 21:14:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:25,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:25,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 21:14:25,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-14 21:14:25,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:25,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:14:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 21:14:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:25,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:25,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:14:25,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:25,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:25,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 21:14:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:25,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:14:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:14:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:25,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:25,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 21:14:25,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 21:14:25,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:25,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 21:14:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:14:26,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458350890] [2020-10-14 21:14:26,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:26,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:14:26,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225883685] [2020-10-14 21:14:26,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:26,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:26,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:26,036 INFO L87 Difference]: Start difference. First operand 81752 states and 115344 transitions. Second operand 7 states. [2020-10-14 21:14:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:47,452 INFO L93 Difference]: Finished difference Result 164755 states and 234012 transitions. [2020-10-14 21:14:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:14:47,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-14 21:14:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:47,731 INFO L225 Difference]: With dead ends: 164755 [2020-10-14 21:14:47,731 INFO L226 Difference]: Without dead ends: 80481 [2020-10-14 21:14:47,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:14:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80481 states. [2020-10-14 21:14:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80481 to 80333. [2020-10-14 21:14:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80333 states. [2020-10-14 21:14:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80333 states to 80333 states and 100445 transitions. [2020-10-14 21:14:49,539 INFO L78 Accepts]: Start accepts. Automaton has 80333 states and 100445 transitions. Word has length 289 [2020-10-14 21:14:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:49,540 INFO L479 AbstractCegarLoop]: Abstraction has 80333 states and 100445 transitions. [2020-10-14 21:14:49,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 80333 states and 100445 transitions. [2020-10-14 21:14:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-14 21:14:49,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:49,569 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, 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, 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] [2020-10-14 21:14:49,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:14:49,570 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:49,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1463858059, now seen corresponding path program 1 times [2020-10-14 21:14:49,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:49,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315559700] [2020-10-14 21:14:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 21:14:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 21:14:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:54,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 21:14:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 21:14:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:55,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:55,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:55,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:55,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:14:55,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:55,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:55,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:55,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:14:55,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 21:14:55,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:55,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 21:14:55,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:14:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 21:14:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 21:14:55,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:55,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 21:14:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:14:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315559700] [2020-10-14 21:14:56,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:56,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:14:56,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910105824] [2020-10-14 21:14:56,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:56,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:56,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:56,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:56,247 INFO L87 Difference]: Start difference. First operand 80333 states and 100445 transitions. Second operand 7 states. [2020-10-14 21:15:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:22,051 INFO L93 Difference]: Finished difference Result 199114 states and 258199 transitions. [2020-10-14 21:15:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:22,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-14 21:15:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:22,350 INFO L225 Difference]: With dead ends: 199114 [2020-10-14 21:15:22,351 INFO L226 Difference]: Without dead ends: 119554 [2020-10-14 21:15:22,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119554 states. [2020-10-14 21:15:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119554 to 118628. [2020-10-14 21:15:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118628 states. [2020-10-14 21:15:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118628 states to 118628 states and 146369 transitions. [2020-10-14 21:15:26,975 INFO L78 Accepts]: Start accepts. Automaton has 118628 states and 146369 transitions. Word has length 362 [2020-10-14 21:15:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:26,976 INFO L479 AbstractCegarLoop]: Abstraction has 118628 states and 146369 transitions. [2020-10-14 21:15:26,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 118628 states and 146369 transitions. [2020-10-14 21:15:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-14 21:15:26,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:26,998 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-14 21:15:26,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:15:26,998 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:26,998 INFO L82 PathProgramCache]: Analyzing trace with hash 879118066, now seen corresponding path program 1 times [2020-10-14 21:15:26,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:26,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410731292] [2020-10-14 21:15:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-14 21:15:32,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 21:15:32,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:15:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:32,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:32,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 21:15:32,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:32,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:15:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 21:15:32,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:15:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:32,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:15:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:15:32,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:15:32,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:15:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 21:15:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 21:15:32,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:15:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 21:15:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-14 21:15:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:15:32,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:15:32,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 21:15:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 120 proven. 227 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-10-14 21:15:33,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410731292] [2020-10-14 21:15:33,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:33,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:33,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415190631] [2020-10-14 21:15:33,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:33,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:33,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:33,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:33,276 INFO L87 Difference]: Start difference. First operand 118628 states and 146369 transitions. Second operand 7 states.