/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/Problem06_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:50:02,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:50:02,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:50:02,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:50:02,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:50:02,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:50:02,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:50:02,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:50:02,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:50:02,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:50:02,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:50:02,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:50:02,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:50:02,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:50:02,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:50:02,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:50:02,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:50:02,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:50:02,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:50:02,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:50:02,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:50:02,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:50:02,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:50:02,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:50:02,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:50:02,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:50:02,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:50:02,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:50:02,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:50:02,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:50:02,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:50:02,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:50:02,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:50:02,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:50:02,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:50:02,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:50:02,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:50:02,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:50:02,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:50:02,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:50:02,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:50:02,076 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 19:50:02,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:50:02,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:50:02,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:50:02,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:50:02,100 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:50:02,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:50:02,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:50:02,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:50:02,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:50:02,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:50:02,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:50:02,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:50:02,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:50:02,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:50:02,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:50:02,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:50:02,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:50:02,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:50:02,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:50:02,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:50:02,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:50:02,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:50:02,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:50:02,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:50:02,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:50:02,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:50:02,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:50:02,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:50:02,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:50:02,105 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 19:50:02,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:50:02,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:50:02,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:50:02,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:50:02,431 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:50:02,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label02.c [2020-10-14 19:50:02,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9cd04e98/eae78a8c0e7046a28c2f361c6badc6ef/FLAG2c8bfa5ff [2020-10-14 19:50:03,431 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:50:03,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label02.c [2020-10-14 19:50:03,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9cd04e98/eae78a8c0e7046a28c2f361c6badc6ef/FLAG2c8bfa5ff [2020-10-14 19:50:03,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9cd04e98/eae78a8c0e7046a28c2f361c6badc6ef [2020-10-14 19:50:03,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:50:03,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:50:03,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:50:03,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:50:03,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:50:03,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:03" (1/1) ... [2020-10-14 19:50:03,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b15dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:03, skipping insertion in model container [2020-10-14 19:50:03,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:03" (1/1) ... [2020-10-14 19:50:03,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:50:04,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:50:06,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:50:06,381 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:50:07,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:50:07,577 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:50:07,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07 WrapperNode [2020-10-14 19:50:07,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:50:07,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:50:07,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:50:07,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:50:07,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... [2020-10-14 19:50:07,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:50:07,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:50:07,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:50:07,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:50:07,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:50:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:50:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:50:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:50:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:50:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:50:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:50:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:50:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:50:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:50:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:50:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:50:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:50:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:50:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:50:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:50:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:50:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:50:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:50:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:50:14,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:50:14,776 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:50:14,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:14 BoogieIcfgContainer [2020-10-14 19:50:14,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:50:14,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:50:14,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:50:14,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:50:14,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:50:03" (1/3) ... [2020-10-14 19:50:14,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41014b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:14, skipping insertion in model container [2020-10-14 19:50:14,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07" (2/3) ... [2020-10-14 19:50:14,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41014b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:14, skipping insertion in model container [2020-10-14 19:50:14,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:14" (3/3) ... [2020-10-14 19:50:14,802 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label02.c [2020-10-14 19:50:14,812 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:50:14,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:50:14,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:50:14,870 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:50:14,870 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:50:14,870 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:50:14,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:50:14,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:50:14,871 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:50:14,871 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:50:14,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:50:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 19:50:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-14 19:50:14,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:50:14,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:14,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:50:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:50:14,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2019245400, now seen corresponding path program 1 times [2020-10-14 19:50:14,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:50:14,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773107991] [2020-10-14 19:50:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:50:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-14 19:50:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:50:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-14 19:50:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:21,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:50:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:50:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 961 [2020-10-14 19:50:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:50:22,181 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:50:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:50:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:22,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:22,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:50:22,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:50:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:50:22,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:22,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:50:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:50:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:50:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:50:23,106 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 19:50:23,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773107991] [2020-10-14 19:50:23,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:50:23,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:50:23,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267464558] [2020-10-14 19:50:23,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:50:23,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:50:23,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:50:23,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:50:23,127 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 19:50:23,301 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:50:23,553 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:50:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:50:42,160 INFO L93 Difference]: Finished difference Result 4880 states and 9208 transitions. [2020-10-14 19:50:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:50:42,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 951 [2020-10-14 19:50:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:50:42,206 INFO L225 Difference]: With dead ends: 4880 [2020-10-14 19:50:42,206 INFO L226 Difference]: Without dead ends: 3497 [2020-10-14 19:50:42,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:50:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2020-10-14 19:50:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3403. [2020-10-14 19:50:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 19:50:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5930 transitions. [2020-10-14 19:50:42,428 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5930 transitions. Word has length 951 [2020-10-14 19:50:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:50:42,431 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5930 transitions. [2020-10-14 19:50:42,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:50:42,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5930 transitions. [2020-10-14 19:50:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-14 19:50:42,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:50:42,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:42,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:50:42,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:50:42,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:50:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash -179314403, now seen corresponding path program 1 times [2020-10-14 19:50:42,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:50:42,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484033306] [2020-10-14 19:50:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:50:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:47,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:47,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-14 19:50:47,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:50:47,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5217 [2020-10-14 19:50:47,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:47,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:50:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:50:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 958 [2020-10-14 19:50:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:50:48,675 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:50:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:50:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:48,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:48,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:50:48,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:50:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:50:48,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:48,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:50:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:50:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:50:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 19:50:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:50:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:48,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:50:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:50:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:50:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:48,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:50:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:50:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:50:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:50:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:50:49,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484033306] [2020-10-14 19:50:49,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:50:49,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:50:49,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216367110] [2020-10-14 19:50:49,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:50:49,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:50:49,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:50:49,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:50:49,889 INFO L87 Difference]: Start difference. First operand 3403 states and 5930 transitions. Second operand 6 states. [2020-10-14 19:50:50,162 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:50:50,398 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:51:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:51:11,304 INFO L93 Difference]: Finished difference Result 13186 states and 23512 transitions. [2020-10-14 19:51:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:51:11,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 959 [2020-10-14 19:51:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:51:11,371 INFO L225 Difference]: With dead ends: 13186 [2020-10-14 19:51:11,372 INFO L226 Difference]: Without dead ends: 9789 [2020-10-14 19:51:11,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:51:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2020-10-14 19:51:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 9711. [2020-10-14 19:51:11,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9711 states. [2020-10-14 19:51:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 15895 transitions. [2020-10-14 19:51:11,715 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 15895 transitions. Word has length 959 [2020-10-14 19:51:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:51:11,718 INFO L479 AbstractCegarLoop]: Abstraction has 9711 states and 15895 transitions. [2020-10-14 19:51:11,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:51:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 15895 transitions. [2020-10-14 19:51:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 19:51:11,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:51:11,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:11,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:51:11,767 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:51:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:51:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash -337052945, now seen corresponding path program 1 times [2020-10-14 19:51:11,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:51:11,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941683776] [2020-10-14 19:51:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:51:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:17,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:17,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-14 19:51:17,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:51:17,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-14 19:51:17,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:17,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:51:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 19:51:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 958 [2020-10-14 19:51:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:51:18,367 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:51:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:51:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:18,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:51:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:51:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:51:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:18,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:51:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:51:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:51:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:51:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:51:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 19:51:18,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:51:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 19:51:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:18,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:51:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:51:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:51:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:51:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:51:19,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941683776] [2020-10-14 19:51:19,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:51:19,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:51:19,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992870495] [2020-10-14 19:51:19,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:51:19,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:51:19,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:51:19,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:51:19,484 INFO L87 Difference]: Start difference. First operand 9711 states and 15895 transitions. Second operand 6 states. [2020-10-14 19:51:19,607 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:51:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:51:33,732 INFO L93 Difference]: Finished difference Result 28720 states and 47997 transitions. [2020-10-14 19:51:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:51:33,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 976 [2020-10-14 19:51:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:51:33,842 INFO L225 Difference]: With dead ends: 28720 [2020-10-14 19:51:33,842 INFO L226 Difference]: Without dead ends: 19015 [2020-10-14 19:51:33,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:51:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2020-10-14 19:51:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 18984. [2020-10-14 19:51:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18984 states. [2020-10-14 19:51:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18984 states to 18984 states and 30610 transitions. [2020-10-14 19:51:34,440 INFO L78 Accepts]: Start accepts. Automaton has 18984 states and 30610 transitions. Word has length 976 [2020-10-14 19:51:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:51:34,443 INFO L479 AbstractCegarLoop]: Abstraction has 18984 states and 30610 transitions. [2020-10-14 19:51:34,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:51:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 18984 states and 30610 transitions. [2020-10-14 19:51:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 19:51:34,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:51:34,518 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:34,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:51:34,519 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:51:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:51:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1369421392, now seen corresponding path program 1 times [2020-10-14 19:51:34,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:51:34,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648297329] [2020-10-14 19:51:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:51:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:39,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:39,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-14 19:51:39,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:51:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5325 [2020-10-14 19:51:39,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:39,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:51:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:51:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 19:51:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:51:40,276 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:51:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:51:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:51:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:51:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:51:40,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:40,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:51:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:51:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:51:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:51:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:51:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:51:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:51:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:51:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:40,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:51:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:51:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:51:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:51:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:51:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:40,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:51:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:51:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:51:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 19:51:40,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:51:40,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:51:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:51:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:51:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:51:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:51:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:51:41,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648297329] [2020-10-14 19:51:41,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:51:41,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:51:41,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029514142] [2020-10-14 19:51:41,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:51:41,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:51:41,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:51:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:51:41,132 INFO L87 Difference]: Start difference. First operand 18984 states and 30610 transitions. Second operand 8 states. [2020-10-14 19:51:41,265 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:51:41,914 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:51:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:51:55,810 INFO L93 Difference]: Finished difference Result 57098 states and 96925 transitions. [2020-10-14 19:51:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:51:55,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 996 [2020-10-14 19:51:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:51:55,974 INFO L225 Difference]: With dead ends: 57098 [2020-10-14 19:51:55,974 INFO L226 Difference]: Without dead ends: 38120 [2020-10-14 19:51:56,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:51:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38120 states. [2020-10-14 19:51:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38120 to 38039. [2020-10-14 19:51:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38039 states. [2020-10-14 19:51:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38039 states to 38039 states and 60600 transitions. [2020-10-14 19:51:56,965 INFO L78 Accepts]: Start accepts. Automaton has 38039 states and 60600 transitions. Word has length 996 [2020-10-14 19:51:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:51:56,966 INFO L479 AbstractCegarLoop]: Abstraction has 38039 states and 60600 transitions. [2020-10-14 19:51:56,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:51:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 38039 states and 60600 transitions. [2020-10-14 19:51:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-14 19:51:57,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:51:57,067 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:57,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:51:57,068 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:51:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:51:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1614768046, now seen corresponding path program 1 times [2020-10-14 19:51:57,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:51:57,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414981404] [2020-10-14 19:51:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:51:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:51:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:51:57,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:01,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-14 19:52:02,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:52:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-14 19:52:02,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:02,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:52:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:52:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 19:52:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:02,635 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:52:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:52:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:02,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:02,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:52:02,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:52:02,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:02,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:52:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:52:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:52:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:02,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:02,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:52:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:52:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:52:02,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:02,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:52:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:52:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:52:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:52:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:52:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 19:52:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:02,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:52:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:52:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:52:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:52:03,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414981404] [2020-10-14 19:52:03,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:52:03,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:52:03,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692608860] [2020-10-14 19:52:03,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:52:03,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:52:03,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:52:03,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:52:03,570 INFO L87 Difference]: Start difference. First operand 38039 states and 60600 transitions. Second operand 8 states. [2020-10-14 19:52:03,699 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:52:04,419 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:52:19,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:52:19,728 INFO L93 Difference]: Finished difference Result 96726 states and 171869 transitions. [2020-10-14 19:52:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:52:19,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1003 [2020-10-14 19:52:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:52:20,030 INFO L225 Difference]: With dead ends: 96726 [2020-10-14 19:52:20,031 INFO L226 Difference]: Without dead ends: 58693 [2020-10-14 19:52:20,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:52:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58693 states. [2020-10-14 19:52:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58693 to 58130. [2020-10-14 19:52:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58130 states. [2020-10-14 19:52:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58130 states to 58130 states and 90860 transitions. [2020-10-14 19:52:23,592 INFO L78 Accepts]: Start accepts. Automaton has 58130 states and 90860 transitions. Word has length 1003 [2020-10-14 19:52:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:52:23,593 INFO L479 AbstractCegarLoop]: Abstraction has 58130 states and 90860 transitions. [2020-10-14 19:52:23,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:52:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 58130 states and 90860 transitions. [2020-10-14 19:52:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-14 19:52:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:52:23,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:23,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:52:23,756 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:52:23,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:52:23,757 INFO L82 PathProgramCache]: Analyzing trace with hash -867114309, now seen corresponding path program 1 times [2020-10-14 19:52:23,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:52:23,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543221595] [2020-10-14 19:52:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:52:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:28,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:28,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1031 [2020-10-14 19:52:28,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:52:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:29,245 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:52:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:52:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:29,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:52:29,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:52:29,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:29,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:52:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:52:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:52:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:52:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:29,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:52:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:52:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:52:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:29,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:52:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:52:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:52:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:52:29,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:52:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:29,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:52:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:52:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:52:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:52:30,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543221595] [2020-10-14 19:52:30,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:52:30,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:52:30,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205358232] [2020-10-14 19:52:30,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:52:30,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:52:30,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:52:30,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:52:30,145 INFO L87 Difference]: Start difference. First operand 58130 states and 90860 transitions. Second operand 7 states. [2020-10-14 19:52:30,431 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:52:31,163 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:52:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:52:49,297 INFO L93 Difference]: Finished difference Result 136190 states and 222262 transitions. [2020-10-14 19:52:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:52:49,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1009 [2020-10-14 19:52:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:52:49,620 INFO L225 Difference]: With dead ends: 136190 [2020-10-14 19:52:49,620 INFO L226 Difference]: Without dead ends: 78066 [2020-10-14 19:52:49,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:52:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78066 states. [2020-10-14 19:52:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78066 to 77918. [2020-10-14 19:52:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77918 states. [2020-10-14 19:52:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77918 states to 77918 states and 122525 transitions. [2020-10-14 19:52:51,854 INFO L78 Accepts]: Start accepts. Automaton has 77918 states and 122525 transitions. Word has length 1009 [2020-10-14 19:52:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:52:51,855 INFO L479 AbstractCegarLoop]: Abstraction has 77918 states and 122525 transitions. [2020-10-14 19:52:51,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:52:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 77918 states and 122525 transitions. [2020-10-14 19:52:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-14 19:52:52,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:52:52,050 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:52,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:52:52,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:52:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:52:52,051 INFO L82 PathProgramCache]: Analyzing trace with hash -112440625, now seen corresponding path program 1 times [2020-10-14 19:52:52,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:52:52,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880594014] [2020-10-14 19:52:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:52:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:52:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 19:52:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:52:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:57,505 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:52:57,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:52:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:57,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:57,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:57,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:52:57,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:57,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:52:57,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:57,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:52:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:52:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:57,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:52:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:57,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:52:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:52:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:57,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:57,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:52:57,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:52:57,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:57,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:52:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:52:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:52:57,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 19:52:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:52:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:52:57,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:52:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:52:57,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:52:57,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 19:52:57,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:52:57,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:52:57,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:52:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:52:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:52:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:52:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:52:58,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880594014] [2020-10-14 19:52:58,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:52:58,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:52:58,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741263411] [2020-10-14 19:52:58,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:52:58,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:52:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:52:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:52:58,196 INFO L87 Difference]: Start difference. First operand 77918 states and 122525 transitions. Second operand 7 states. [2020-10-14 19:52:58,333 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:53:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:53:16,087 INFO L93 Difference]: Finished difference Result 230941 states and 373054 transitions. [2020-10-14 19:53:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:53:16,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1015 [2020-10-14 19:53:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:53:16,777 INFO L225 Difference]: With dead ends: 230941 [2020-10-14 19:53:16,778 INFO L226 Difference]: Without dead ends: 153029 [2020-10-14 19:53:16,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:53:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153029 states. [2020-10-14 19:53:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153029 to 152929. [2020-10-14 19:53:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152929 states. [2020-10-14 19:53:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152929 states to 152929 states and 249354 transitions. [2020-10-14 19:53:19,794 INFO L78 Accepts]: Start accepts. Automaton has 152929 states and 249354 transitions. Word has length 1015 [2020-10-14 19:53:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:53:19,794 INFO L479 AbstractCegarLoop]: Abstraction has 152929 states and 249354 transitions. [2020-10-14 19:53:19,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:53:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 152929 states and 249354 transitions. [2020-10-14 19:53:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2020-10-14 19:53:20,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:53:20,134 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:20,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:53:20,134 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:53:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:53:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash -494608639, now seen corresponding path program 1 times [2020-10-14 19:53:20,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:53:20,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721596138] [2020-10-14 19:53:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:53:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:20,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-14 19:53:25,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 19:53:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-14 19:53:25,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:53:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:53:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 19:53:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:25,580 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:53:25,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:53:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:53:25,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:53:25,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:53:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:53:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:53:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:53:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:53:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:53:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:53:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:53:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:53:25,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:53:25,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:53:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:53:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:53:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:53:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 19:53:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:53:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:53:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:53:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:53:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:53:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:53:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:53:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:53:25,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:53:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:53:25,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:53:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:53:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:53:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:53:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:25,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:53:25,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:53:25,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:25,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:53:25,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:53:25,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:53:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 19:53:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:53:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:53:26,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:53:26,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:53:26,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:53:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 19:53:26,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:53:26,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:53:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:53:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:53:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:53:26,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:53:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 161 proven. 18 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 19:53:27,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721596138] [2020-10-14 19:53:27,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:53:27,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:53:27,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503059502] [2020-10-14 19:53:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:53:27,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:53:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:53:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:53:27,131 INFO L87 Difference]: Start difference. First operand 152929 states and 249354 transitions. Second operand 9 states. [2020-10-14 19:53:27,426 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:53:27,565 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129