/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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:13:29,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:13:29,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:13:29,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:13:29,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:13:29,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:13:29,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:13:29,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:13:29,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:13:29,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:13:29,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:13:29,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:13:29,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:13:29,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:13:29,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:13:29,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:13:29,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:13:29,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:13:29,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:13:29,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:13:29,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:13:29,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:13:29,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:13:29,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:13:29,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:13:29,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:13:29,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:13:29,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:13:29,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:13:29,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:13:29,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:13:29,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:13:29,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:13:29,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:13:29,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:13:29,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:13:29,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:13:29,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:13:29,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:13:29,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:13:29,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:13:29,929 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 21:13:29,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:13:29,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:13:29,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:13:29,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:13:29,985 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:13:29,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:13:29,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:13:29,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:13:29,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:13:29,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:13:29,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:13:29,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:13:29,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:13:29,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:13:29,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:13:29,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:13:29,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:13:29,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:13:29,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:13:29,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:13:29,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:13:29,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:13:29,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:13:29,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:13:29,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:13:29,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:13:29,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:13:29,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:13:29,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:13:29,992 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 21:13:30,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:13:30,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:13:30,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:13:30,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:13:30,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:13:30,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-14 21:13:30,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/324de2b9f/adb87f0028254167bbd39e3c8315428c/FLAG052f92038 [2020-10-14 21:13:31,567 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:13:31,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-14 21:13:31,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/324de2b9f/adb87f0028254167bbd39e3c8315428c/FLAG052f92038 [2020-10-14 21:13:31,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/324de2b9f/adb87f0028254167bbd39e3c8315428c [2020-10-14 21:13:31,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:13:31,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:13:31,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:31,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:13:31,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:13:31,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:31" (1/1) ... [2020-10-14 21:13:31,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:31, skipping insertion in model container [2020-10-14 21:13:31,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:31" (1/1) ... [2020-10-14 21:13:31,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:13:32,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:13:34,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:34,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:13:35,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:35,125 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:13:35,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35 WrapperNode [2020-10-14 21:13:35,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:35,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:13:35,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:13:35,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:13:35,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (1/1) ... [2020-10-14 21:13:35,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:13:35,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:13:35,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:13:35,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:13:35,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (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 21:13:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:13:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:13:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:13:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:13:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:13:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:13:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:13:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:13:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:13:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:13:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:13:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:13:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:13:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:13:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:13:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:13:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:13:41,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:13:41,549 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:13:41,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:41 BoogieIcfgContainer [2020-10-14 21:13:41,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:13:41,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:13:41,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:13:41,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:13:41,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:31" (1/3) ... [2020-10-14 21:13:41,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee4e41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:41, skipping insertion in model container [2020-10-14 21:13:41,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:35" (2/3) ... [2020-10-14 21:13:41,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee4e41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:41, skipping insertion in model container [2020-10-14 21:13:41,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:41" (3/3) ... [2020-10-14 21:13:41,573 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2020-10-14 21:13:41,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:13:41,597 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:13:41,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:13:41,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:13:41,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:13:41,650 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:13:41,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:13:41,650 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:13:41,650 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:13:41,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:13:41,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:13:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:13:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 21:13:41,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:41,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:41,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:41,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:41,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1364317718, now seen corresponding path program 1 times [2020-10-14 21:13:41,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:41,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991884471] [2020-10-14 21:13:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:42,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:42,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 21:13:42,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-14 21:13:42,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:42,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 21:13:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:13:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:13:42,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:42,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:42,731 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 21:13:42,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991884471] [2020-10-14 21:13:42,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:13:42,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:13:42,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463334069] [2020-10-14 21:13:42,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:13:42,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:42,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:13:42,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:13:42,766 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:13:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:52,011 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:13:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:13:52,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-14 21:13:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:52,068 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:13:52,069 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:13:52,084 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 21:13:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:13:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:13:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:13:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 21:13:52,325 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 61 [2020-10-14 21:13:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:52,326 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 21:13:52,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:13:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 21:13:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:13:52,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:52,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:13:52,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:13:52,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:52,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2054853353, now seen corresponding path program 1 times [2020-10-14 21:13:52,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:52,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052586893] [2020-10-14 21:13:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:54,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:13:54,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:13:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-10-14 21:13:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:54,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:13:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 21:13:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:13:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:13:54,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:54,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:13:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:13:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:54,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:13:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:13:54,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052586893] [2020-10-14 21:13:54,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:54,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:13:54,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044910299] [2020-10-14 21:13:54,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:13:54,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:54,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:13:54,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:13:54,521 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 6 states. [2020-10-14 21:14:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:06,379 INFO L93 Difference]: Finished difference Result 4668 states and 8256 transitions. [2020-10-14 21:14:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:14:06,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-14 21:14:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:06,405 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 21:14:06,406 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 21:14:06,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 21:14:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3106. [2020-10-14 21:14:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-14 21:14:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5317 transitions. [2020-10-14 21:14:06,514 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5317 transitions. Word has length 130 [2020-10-14 21:14:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:06,515 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5317 transitions. [2020-10-14 21:14:06,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:14:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5317 transitions. [2020-10-14 21:14:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 21:14:06,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:06,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 21:14:06,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:14:06,519 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:06,520 INFO L82 PathProgramCache]: Analyzing trace with hash -631420861, now seen corresponding path program 1 times [2020-10-14 21:14:06,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:06,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741566665] [2020-10-14 21:14:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:06,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:14:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-14 21:14:07,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:07,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:14:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:14:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:08,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:08,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:08,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:14:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:08,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:08,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:08,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:08,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:08,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:14:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:08,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:14:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:14:08,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741566665] [2020-10-14 21:14:08,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:08,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:14:08,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997988069] [2020-10-14 21:14:08,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:08,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:08,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:08,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:08,434 INFO L87 Difference]: Start difference. First operand 3106 states and 5317 transitions. Second operand 7 states. [2020-10-14 21:14:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:25,835 INFO L93 Difference]: Finished difference Result 12506 states and 21809 transitions. [2020-10-14 21:14:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:14:25,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-14 21:14:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:25,892 INFO L225 Difference]: With dead ends: 12506 [2020-10-14 21:14:25,893 INFO L226 Difference]: Without dead ends: 9406 [2020-10-14 21:14:25,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:14:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2020-10-14 21:14:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 9375. [2020-10-14 21:14:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9375 states. [2020-10-14 21:14:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9375 states to 9375 states and 13341 transitions. [2020-10-14 21:14:26,143 INFO L78 Accepts]: Start accepts. Automaton has 9375 states and 13341 transitions. Word has length 136 [2020-10-14 21:14:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:26,143 INFO L479 AbstractCegarLoop]: Abstraction has 9375 states and 13341 transitions. [2020-10-14 21:14:26,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9375 states and 13341 transitions. [2020-10-14 21:14:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 21:14:26,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:26,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:26,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:14:26,147 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1101479881, now seen corresponding path program 1 times [2020-10-14 21:14:26,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:26,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83896213] [2020-10-14 21:14:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:14:27,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-14 21:14:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:14:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:27,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:14:27,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:14:27,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:14:27,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:14:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:27,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83896213] [2020-10-14 21:14:27,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:27,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:27,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749013836] [2020-10-14 21:14:27,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:27,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:27,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:27,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:27,331 INFO L87 Difference]: Start difference. First operand 9375 states and 13341 transitions. Second operand 7 states. [2020-10-14 21:14:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:43,411 INFO L93 Difference]: Finished difference Result 26217 states and 38792 transitions. [2020-10-14 21:14:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:43,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-14 21:14:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:43,535 INFO L225 Difference]: With dead ends: 26217 [2020-10-14 21:14:43,536 INFO L226 Difference]: Without dead ends: 16848 [2020-10-14 21:14:43,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16848 states. [2020-10-14 21:14:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16848 to 15838. [2020-10-14 21:14:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15838 states. [2020-10-14 21:14:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15838 states to 15838 states and 22157 transitions. [2020-10-14 21:14:44,212 INFO L78 Accepts]: Start accepts. Automaton has 15838 states and 22157 transitions. Word has length 146 [2020-10-14 21:14:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:44,214 INFO L479 AbstractCegarLoop]: Abstraction has 15838 states and 22157 transitions. [2020-10-14 21:14:44,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 15838 states and 22157 transitions. [2020-10-14 21:14:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 21:14:44,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:44,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:44,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:14:44,223 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:44,224 INFO L82 PathProgramCache]: Analyzing trace with hash 275415606, now seen corresponding path program 1 times [2020-10-14 21:14:44,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:44,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824286277] [2020-10-14 21:14:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:44,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:45,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:14:45,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-14 21:14:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:45,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:14:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:45,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 21:14:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:45,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:14:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:14:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 21:14:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:45,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:14:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:14:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:45,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824286277] [2020-10-14 21:14:45,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:45,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:45,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948160107] [2020-10-14 21:14:45,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:45,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:45,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:45,956 INFO L87 Difference]: Start difference. First operand 15838 states and 22157 transitions. Second operand 7 states. [2020-10-14 21:14:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:58,661 INFO L93 Difference]: Finished difference Result 46441 states and 68048 transitions. [2020-10-14 21:14:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:14:58,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-14 21:14:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:58,798 INFO L225 Difference]: With dead ends: 46441 [2020-10-14 21:14:58,801 INFO L226 Difference]: Without dead ends: 30609 [2020-10-14 21:14:58,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:14:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30609 states. [2020-10-14 21:14:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30609 to 29561. [2020-10-14 21:14:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29561 states. [2020-10-14 21:14:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29561 states to 29561 states and 40165 transitions. [2020-10-14 21:14:59,564 INFO L78 Accepts]: Start accepts. Automaton has 29561 states and 40165 transitions. Word has length 181 [2020-10-14 21:14:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:59,564 INFO L479 AbstractCegarLoop]: Abstraction has 29561 states and 40165 transitions. [2020-10-14 21:14:59,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 29561 states and 40165 transitions. [2020-10-14 21:14:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 21:14:59,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:59,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:14:59,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:14:59,571 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:59,571 INFO L82 PathProgramCache]: Analyzing trace with hash 148432439, now seen corresponding path program 1 times [2020-10-14 21:14:59,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:59,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508553844] [2020-10-14 21:14:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 21:15:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:15:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2589 [2020-10-14 21:15:02,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:15:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:15:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:02,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:02,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:15:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:02,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:02,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:02,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:02,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:02,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 21:15:02,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:02,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:02,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:15:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:15:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:15:02,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 21:15:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:02,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:15:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 124 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:15:02,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508553844] [2020-10-14 21:15:02,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:02,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:15:02,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797027088] [2020-10-14 21:15:02,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:15:02,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:02,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:15:02,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:02,871 INFO L87 Difference]: Start difference. First operand 29561 states and 40165 transitions. Second operand 8 states. [2020-10-14 21:15:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:30,039 INFO L93 Difference]: Finished difference Result 80040 states and 115506 transitions. [2020-10-14 21:15:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:15:30,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-10-14 21:15:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:30,226 INFO L225 Difference]: With dead ends: 80040 [2020-10-14 21:15:30,226 INFO L226 Difference]: Without dead ends: 50485 [2020-10-14 21:15:30,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:15:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50485 states. [2020-10-14 21:15:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50485 to 49590. [2020-10-14 21:15:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49590 states. [2020-10-14 21:15:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49590 states to 49590 states and 65810 transitions. [2020-10-14 21:15:31,444 INFO L78 Accepts]: Start accepts. Automaton has 49590 states and 65810 transitions. Word has length 244 [2020-10-14 21:15:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:31,444 INFO L479 AbstractCegarLoop]: Abstraction has 49590 states and 65810 transitions. [2020-10-14 21:15:31,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:15:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 49590 states and 65810 transitions. [2020-10-14 21:15:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 21:15:31,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:31,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:15:31,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:15:31,459 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:31,459 INFO L82 PathProgramCache]: Analyzing trace with hash 545215459, now seen corresponding path program 1 times [2020-10-14 21:15:31,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:31,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453238104] [2020-10-14 21:15:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:34,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:34,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 21:15:34,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:15:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3245 [2020-10-14 21:15:34,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:34,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:15:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-14 21:15:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:34,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:34,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:34,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:34,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:15:34,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:34,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:35,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:35,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:35,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:35,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-14 21:15:35,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:35,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:35,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:35,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:15:35,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 21:15:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:35,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:15:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:15:36,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453238104] [2020-10-14 21:15:36,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:36,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:36,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640571546] [2020-10-14 21:15:36,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:36,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:36,327 INFO L87 Difference]: Start difference. First operand 49590 states and 65810 transitions. Second operand 7 states. [2020-10-14 21:15:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:53,767 INFO L93 Difference]: Finished difference Result 118066 states and 162339 transitions. [2020-10-14 21:15:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:53,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-14 21:15:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:54,061 INFO L225 Difference]: With dead ends: 118066 [2020-10-14 21:15:54,062 INFO L226 Difference]: Without dead ends: 69249 [2020-10-14 21:15:54,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 21:15:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69249 states. [2020-10-14 21:15:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69249 to 66649. [2020-10-14 21:15:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66649 states. [2020-10-14 21:15:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66649 states to 66649 states and 87417 transitions. [2020-10-14 21:15:58,470 INFO L78 Accepts]: Start accepts. Automaton has 66649 states and 87417 transitions. Word has length 314 [2020-10-14 21:15:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:58,471 INFO L479 AbstractCegarLoop]: Abstraction has 66649 states and 87417 transitions. [2020-10-14 21:15:58,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 66649 states and 87417 transitions. [2020-10-14 21:15:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-14 21:15:58,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:58,495 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:58,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:15:58,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:58,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1750429225, now seen corresponding path program 1 times [2020-10-14 21:15:58,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:58,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869386551] [2020-10-14 21:15:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:03,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:03,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-14 21:16:03,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:16:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 21:16:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:03,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-14 21:16:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:16:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:03,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:03,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:16:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:03,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:03,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:03,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:16:03,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:16:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:03,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:03,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:16:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:04,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:04,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 21:16:04,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:16:04,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:04,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:16:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 21:16:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:04,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:16:04,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 21:16:04,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:04,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:16:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 21:16:04,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869386551] [2020-10-14 21:16:04,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:04,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:04,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358703202] [2020-10-14 21:16:04,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:04,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:04,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:04,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:04,744 INFO L87 Difference]: Start difference. First operand 66649 states and 87417 transitions. Second operand 7 states. [2020-10-14 21:16:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:26,157 INFO L93 Difference]: Finished difference Result 146418 states and 202023 transitions. [2020-10-14 21:16:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:16:26,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-14 21:16:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:26,470 INFO L225 Difference]: With dead ends: 146418 [2020-10-14 21:16:26,471 INFO L226 Difference]: Without dead ends: 80544 [2020-10-14 21:16:26,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80544 states. [2020-10-14 21:16:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80544 to 79410. [2020-10-14 21:16:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79410 states. [2020-10-14 21:16:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79410 states to 79410 states and 101108 transitions. [2020-10-14 21:16:28,819 INFO L78 Accepts]: Start accepts. Automaton has 79410 states and 101108 transitions. Word has length 358 [2020-10-14 21:16:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:28,820 INFO L479 AbstractCegarLoop]: Abstraction has 79410 states and 101108 transitions. [2020-10-14 21:16:28,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 79410 states and 101108 transitions. [2020-10-14 21:16:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-14 21:16:28,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:28,846 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:28,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:16:28,846 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1854363958, now seen corresponding path program 1 times [2020-10-14 21:16:28,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:28,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822701572] [2020-10-14 21:16:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:33,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:33,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-14 21:16:33,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:16:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 21:16:33,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:33,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:16:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:16:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:34,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:34,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:34,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:34,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:34,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:34,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:34,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:16:34,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:16:34,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:34,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:16:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:16:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 21:16:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 21:16:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-14 21:16:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:34,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:34,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:16:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:16:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:34,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 21:16:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 238 proven. 107 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:16:34,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822701572] [2020-10-14 21:16:34,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:34,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:16:34,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903058868] [2020-10-14 21:16:34,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:16:34,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:16:34,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:34,740 INFO L87 Difference]: Start difference. First operand 79410 states and 101108 transitions. Second operand 8 states. [2020-10-14 21:17:07,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:07,736 INFO L93 Difference]: Finished difference Result 160607 states and 204894 transitions. [2020-10-14 21:17:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:17:07,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 411 [2020-10-14 21:17:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:08,031 INFO L225 Difference]: With dead ends: 160607 [2020-10-14 21:17:08,032 INFO L226 Difference]: Without dead ends: 78623 [2020-10-14 21:17:08,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:17:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78623 states. [2020-10-14 21:17:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78623 to 78539. [2020-10-14 21:17:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78539 states. [2020-10-14 21:17:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78539 states to 78539 states and 92838 transitions. [2020-10-14 21:17:10,201 INFO L78 Accepts]: Start accepts. Automaton has 78539 states and 92838 transitions. Word has length 411 [2020-10-14 21:17:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:10,202 INFO L479 AbstractCegarLoop]: Abstraction has 78539 states and 92838 transitions. [2020-10-14 21:17:10,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:17:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 78539 states and 92838 transitions. [2020-10-14 21:17:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 21:17:10,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:10,221 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:17:10,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:17:10,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:10,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1941545162, now seen corresponding path program 1 times [2020-10-14 21:17:10,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:10,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745856199] [2020-10-14 21:17:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking...