/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:17:30,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:17:30,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:17:30,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:17:30,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:17:30,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:17:30,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:17:30,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:17:30,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:17:30,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:17:30,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:17:30,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:17:30,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:17:30,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:17:30,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:17:30,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:17:30,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:17:30,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:17:30,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:17:30,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:17:30,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:17:30,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:17:30,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:17:30,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:17:30,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:17:30,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:17:30,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:17:30,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:17:30,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:17:30,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:17:30,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:17:30,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:17:30,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:17:30,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:17:30,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:17:30,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:17:30,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:17:30,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:17:30,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:17:30,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:17:30,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:17:30,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:17:30,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:17:30,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:17:30,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:17:30,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:17:30,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:17:30,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:17:30,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:17:30,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:17:30,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:17:30,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:17:30,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:17:30,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:17:30,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:17:30,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:17:30,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:17:30,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:17:30,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:17:30,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:17:30,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:17:30,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:17:30,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:17:30,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:17:30,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:17:30,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:17:30,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:17:30,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:17:30,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:17:30,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:17:30,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:17:30,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:17:31,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:17:31,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:17:31,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:17:31,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:17:31,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:17:31,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2020-10-14 21:17:31,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/170a4e118/b02a4344b0c648cca617fcd2705d9d39/FLAG7879366f9 [2020-10-14 21:17:32,250 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:17:32,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2020-10-14 21:17:32,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/170a4e118/b02a4344b0c648cca617fcd2705d9d39/FLAG7879366f9 [2020-10-14 21:17:32,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/170a4e118/b02a4344b0c648cca617fcd2705d9d39 [2020-10-14 21:17:32,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:17:32,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:17:32,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:17:32,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:17:32,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:17:32,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:17:32" (1/1) ... [2020-10-14 21:17:32,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:32, skipping insertion in model container [2020-10-14 21:17:32,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:17:32" (1/1) ... [2020-10-14 21:17:32,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:17:32,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:17:34,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:17:34,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:17:35,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:17:35,168 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:17:35,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35 WrapperNode [2020-10-14 21:17:35,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:17:35,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:17:35,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:17:35,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:17:35,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... [2020-10-14 21:17:35,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:17:35,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:17:35,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:17:35,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:17:35,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:17:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:17:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:17:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:17:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:17:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:17:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:17:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:17:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:17:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:17:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:17:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:17:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:17:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:17:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:17:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:17:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:17:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:17:40,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:17:40,807 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:17:40,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:17:40 BoogieIcfgContainer [2020-10-14 21:17:40,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:17:40,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:17:40,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:17:40,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:17:40,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:17:32" (1/3) ... [2020-10-14 21:17:40,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10510be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:17:40, skipping insertion in model container [2020-10-14 21:17:40,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:35" (2/3) ... [2020-10-14 21:17:40,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10510be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:17:40, skipping insertion in model container [2020-10-14 21:17:40,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:17:40" (3/3) ... [2020-10-14 21:17:40,856 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2020-10-14 21:17:40,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:17:40,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:17:40,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:17:40,939 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:17:40,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:17:40,940 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:17:40,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:17:40,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:17:40,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:17:40,940 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:17:40,941 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:17:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:17:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 21:17:41,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:41,007 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] [2020-10-14 21:17:41,008 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:41,016 INFO L82 PathProgramCache]: Analyzing trace with hash -157974758, now seen corresponding path program 1 times [2020-10-14 21:17:41,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:41,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030832295] [2020-10-14 21:17:41,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:41,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 21:17:41,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-14 21:17:41,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:41,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:41,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:17:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 21:17:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:17:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:41,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:41,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:41,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:17:41,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:41,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:17:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:17:42,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030832295] [2020-10-14 21:17:42,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:17:42,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:17:42,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232383957] [2020-10-14 21:17:42,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:17:42,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:42,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:17:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:17:42,037 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:17:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:51,566 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 21:17:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:17:51,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 21:17:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:51,602 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 21:17:51,602 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:17:51,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:17:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:17:51,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 21:17:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 21:17:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 21:17:51,788 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 57 [2020-10-14 21:17:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:51,790 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 21:17:51,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:17:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 21:17:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 21:17:51,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:51,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:17:51,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:17:51,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1421403525, now seen corresponding path program 1 times [2020-10-14 21:17:51,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:51,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79160071] [2020-10-14 21:17:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:53,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:53,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-14 21:17:53,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:53,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:17:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:17:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:53,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:53,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:17:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:53,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:17:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:17:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:53,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:17:53,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 21:17:53,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:53,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:17:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:17:53,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79160071] [2020-10-14 21:17:53,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:17:53,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:17:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578394205] [2020-10-14 21:17:53,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:17:53,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:17:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:17:53,528 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-14 21:18:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:05,521 INFO L93 Difference]: Finished difference Result 4738 states and 7554 transitions. [2020-10-14 21:18:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:18:05,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-14 21:18:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:05,548 INFO L225 Difference]: With dead ends: 4738 [2020-10-14 21:18:05,548 INFO L226 Difference]: Without dead ends: 3180 [2020-10-14 21:18:05,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:18:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2020-10-14 21:18:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3139. [2020-10-14 21:18:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2020-10-14 21:18:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4555 transitions. [2020-10-14 21:18:05,674 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4555 transitions. Word has length 136 [2020-10-14 21:18:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:05,675 INFO L479 AbstractCegarLoop]: Abstraction has 3139 states and 4555 transitions. [2020-10-14 21:18:05,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4555 transitions. [2020-10-14 21:18:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 21:18:05,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:05,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:18:05,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:18:05,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1978648782, now seen corresponding path program 1 times [2020-10-14 21:18:05,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:05,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983678851] [2020-10-14 21:18:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 21:18:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:18:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-14 21:18:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:08,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:18:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 21:18:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:08,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:08,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:18:08,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:08,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:08,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:08,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:18:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 21:18:08,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:08,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:18:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:18:08,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983678851] [2020-10-14 21:18:08,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:08,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:18:08,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921518881] [2020-10-14 21:18:08,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:18:08,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:08,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:18:08,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:18:08,971 INFO L87 Difference]: Start difference. First operand 3139 states and 4555 transitions. Second operand 6 states. [2020-10-14 21:18:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:23,622 INFO L93 Difference]: Finished difference Result 12526 states and 18639 transitions. [2020-10-14 21:18:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:18:23,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-10-14 21:18:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:23,695 INFO L225 Difference]: With dead ends: 12526 [2020-10-14 21:18:23,695 INFO L226 Difference]: Without dead ends: 9393 [2020-10-14 21:18:23,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:18:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9393 states. [2020-10-14 21:18:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9393 to 9389. [2020-10-14 21:18:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9389 states. [2020-10-14 21:18:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9389 states to 9389 states and 12770 transitions. [2020-10-14 21:18:24,063 INFO L78 Accepts]: Start accepts. Automaton has 9389 states and 12770 transitions. Word has length 165 [2020-10-14 21:18:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:24,064 INFO L479 AbstractCegarLoop]: Abstraction has 9389 states and 12770 transitions. [2020-10-14 21:18:24,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:18:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9389 states and 12770 transitions. [2020-10-14 21:18:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 21:18:24,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:24,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:18:24,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:18:24,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash 773603615, now seen corresponding path program 1 times [2020-10-14 21:18:24,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:24,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977088128] [2020-10-14 21:18:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:25,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:25,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 21:18:25,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:25,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-14 21:18:25,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:25,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:18:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:18:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:25,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:18:25,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 21:18:25,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:25,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:18:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:25,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977088128] [2020-10-14 21:18:25,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:25,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:18:25,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359157902] [2020-10-14 21:18:25,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:25,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:25,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:25,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:25,937 INFO L87 Difference]: Start difference. First operand 9389 states and 12770 transitions. Second operand 7 states. [2020-10-14 21:18:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:39,838 INFO L93 Difference]: Finished difference Result 27883 states and 40590 transitions. [2020-10-14 21:18:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:18:39,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-14 21:18:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:39,971 INFO L225 Difference]: With dead ends: 27883 [2020-10-14 21:18:39,971 INFO L226 Difference]: Without dead ends: 18500 [2020-10-14 21:18:40,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:18:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18500 states. [2020-10-14 21:18:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18500 to 16699. [2020-10-14 21:18:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16699 states. [2020-10-14 21:18:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16699 states to 16699 states and 21451 transitions. [2020-10-14 21:18:41,387 INFO L78 Accepts]: Start accepts. Automaton has 16699 states and 21451 transitions. Word has length 170 [2020-10-14 21:18:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:41,388 INFO L479 AbstractCegarLoop]: Abstraction has 16699 states and 21451 transitions. [2020-10-14 21:18:41,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16699 states and 21451 transitions. [2020-10-14 21:18:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 21:18:41,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:41,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:18:41,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:18:41,394 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:41,394 INFO L82 PathProgramCache]: Analyzing trace with hash 364295070, now seen corresponding path program 1 times [2020-10-14 21:18:41,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:41,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451674793] [2020-10-14 21:18:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:43,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:43,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 21:18:43,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-14 21:18:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:43,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:18:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:43,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:43,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:43,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:18:43,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:43,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:43,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:18:43,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 21:18:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:43,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:18:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:18:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:44,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451674793] [2020-10-14 21:18:44,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:44,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:18:44,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722863345] [2020-10-14 21:18:44,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:18:44,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:44,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:18:44,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:18:44,214 INFO L87 Difference]: Start difference. First operand 16699 states and 21451 transitions. Second operand 8 states. [2020-10-14 21:19:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:03,526 INFO L93 Difference]: Finished difference Result 45611 states and 58482 transitions. [2020-10-14 21:19:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:19:03,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-10-14 21:19:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:03,646 INFO L225 Difference]: With dead ends: 45611 [2020-10-14 21:19:03,647 INFO L226 Difference]: Without dead ends: 28918 [2020-10-14 21:19:03,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 21:19:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28918 states. [2020-10-14 21:19:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28918 to 27187. [2020-10-14 21:19:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27187 states. [2020-10-14 21:19:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27187 states to 27187 states and 33677 transitions. [2020-10-14 21:19:04,352 INFO L78 Accepts]: Start accepts. Automaton has 27187 states and 33677 transitions. Word has length 205 [2020-10-14 21:19:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:04,353 INFO L479 AbstractCegarLoop]: Abstraction has 27187 states and 33677 transitions. [2020-10-14 21:19:04,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:19:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 27187 states and 33677 transitions. [2020-10-14 21:19:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 21:19:04,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:04,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-14 21:19:04,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:19:04,359 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:04,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1104923570, now seen corresponding path program 1 times [2020-10-14 21:19:04,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:04,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578097688] [2020-10-14 21:19:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:05,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:06,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:06,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 21:19:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:19:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-10-14 21:19:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:06,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:19:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 21:19:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:19:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:06,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:06,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:06,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:19:06,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:06,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:19:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 21:19:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:19:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:06,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:19:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:07,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:07,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:19:07,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 21:19:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:07,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:19:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:19:07,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578097688] [2020-10-14 21:19:07,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:07,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:19:07,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16860354] [2020-10-14 21:19:07,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:19:07,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:07,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:19:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:19:07,138 INFO L87 Difference]: Start difference. First operand 27187 states and 33677 transitions. Second operand 6 states. [2020-10-14 21:19:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:26,708 INFO L93 Difference]: Finished difference Result 69499 states and 92042 transitions. [2020-10-14 21:19:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:19:26,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 277 [2020-10-14 21:19:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:26,824 INFO L225 Difference]: With dead ends: 69499 [2020-10-14 21:19:26,824 INFO L226 Difference]: Without dead ends: 42318 [2020-10-14 21:19:26,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:19:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42318 states. [2020-10-14 21:19:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42318 to 42278. [2020-10-14 21:19:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42278 states. [2020-10-14 21:19:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42278 states to 42278 states and 54219 transitions. [2020-10-14 21:19:29,127 INFO L78 Accepts]: Start accepts. Automaton has 42278 states and 54219 transitions. Word has length 277 [2020-10-14 21:19:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:29,128 INFO L479 AbstractCegarLoop]: Abstraction has 42278 states and 54219 transitions. [2020-10-14 21:19:29,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:19:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 42278 states and 54219 transitions. [2020-10-14 21:19:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 21:19:29,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:29,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:19:29,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:19:29,134 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:29,135 INFO L82 PathProgramCache]: Analyzing trace with hash -506987518, now seen corresponding path program 1 times [2020-10-14 21:19:29,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:29,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893697543] [2020-10-14 21:19:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:30,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 21:19:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:19:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-14 21:19:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:30,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:19:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 21:19:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:19:30,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:30,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:19:30,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:19:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:30,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:19:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:19:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:31,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:31,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:19:31,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 21:19:31,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:31,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:19:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:19:31,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893697543] [2020-10-14 21:19:31,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:31,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:19:31,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985354248] [2020-10-14 21:19:31,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:19:31,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:31,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:19:31,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:19:31,245 INFO L87 Difference]: Start difference. First operand 42278 states and 54219 transitions. Second operand 6 states. [2020-10-14 21:19:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:52,432 INFO L93 Difference]: Finished difference Result 152258 states and 206503 transitions. [2020-10-14 21:19:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:19:52,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2020-10-14 21:19:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:52,845 INFO L225 Difference]: With dead ends: 152258 [2020-10-14 21:19:52,845 INFO L226 Difference]: Without dead ends: 109190 [2020-10-14 21:19:52,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:19:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109190 states. [2020-10-14 21:19:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109190 to 105336. [2020-10-14 21:19:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105336 states. [2020-10-14 21:19:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105336 states to 105336 states and 141436 transitions. [2020-10-14 21:19:55,339 INFO L78 Accepts]: Start accepts. Automaton has 105336 states and 141436 transitions. Word has length 295 [2020-10-14 21:19:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:55,340 INFO L479 AbstractCegarLoop]: Abstraction has 105336 states and 141436 transitions. [2020-10-14 21:19:55,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:19:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 105336 states and 141436 transitions. [2020-10-14 21:19:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 21:19:55,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:55,349 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:19:55,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:19:55,349 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:55,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1060103123, now seen corresponding path program 1 times [2020-10-14 21:19:55,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:55,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359415530] [2020-10-14 21:19:55,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:56,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:56,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-14 21:19:56,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-14 21:19:56,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:56,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:19:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 21:19:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:56,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:56,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:56,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:19:56,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:56,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:56,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:56,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:19:56,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:19:56,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:56,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:19:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:56,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:56,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:19:56,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 21:19:56,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:56,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:19:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 21:19:56,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359415530] [2020-10-14 21:19:56,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:56,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:19:56,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173557102] [2020-10-14 21:19:56,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:19:56,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:56,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:19:56,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:19:56,905 INFO L87 Difference]: Start difference. First operand 105336 states and 141436 transitions. Second operand 5 states. [2020-10-14 21:20:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:15,193 INFO L93 Difference]: Finished difference Result 232628 states and 321373 transitions. [2020-10-14 21:20:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:20:15,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-14 21:20:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:15,567 INFO L225 Difference]: With dead ends: 232628 [2020-10-14 21:20:15,567 INFO L226 Difference]: Without dead ends: 127298 [2020-10-14 21:20:15,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:20:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127298 states. [2020-10-14 21:20:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127298 to 127265. [2020-10-14 21:20:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127265 states. [2020-10-14 21:20:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127265 states to 127265 states and 177223 transitions. [2020-10-14 21:20:20,751 INFO L78 Accepts]: Start accepts. Automaton has 127265 states and 177223 transitions. Word has length 342 [2020-10-14 21:20:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:20,753 INFO L479 AbstractCegarLoop]: Abstraction has 127265 states and 177223 transitions. [2020-10-14 21:20:20,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:20:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 127265 states and 177223 transitions. [2020-10-14 21:20:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 21:20:20,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:20,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:20:20,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:20:20,764 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1775258667, now seen corresponding path program 1 times [2020-10-14 21:20:20,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:20,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13498701] [2020-10-14 21:20:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:23,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:23,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-14 21:20:23,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:20:23,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2397 [2020-10-14 21:20:23,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:23,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:20:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:20:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:23,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:23,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:23,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:23,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:20:23,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:23,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:23,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:20:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:20:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:23,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:20:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:20:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:23,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:23,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:20:23,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 21:20:23,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:23,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:20:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:20:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:20:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:20:24,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13498701] [2020-10-14 21:20:24,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:20:24,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:20:24,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766203832] [2020-10-14 21:20:24,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:20:24,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:24,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:20:24,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:20:24,262 INFO L87 Difference]: Start difference. First operand 127265 states and 177223 transitions. Second operand 7 states. [2020-10-14 21:20:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:46,080 INFO L93 Difference]: Finished difference Result 254890 states and 355849 transitions. [2020-10-14 21:20:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:20:46,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-14 21:20:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:46,428 INFO L225 Difference]: With dead ends: 254890 [2020-10-14 21:20:46,429 INFO L226 Difference]: Without dead ends: 127631 [2020-10-14 21:20:46,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:20:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127631 states. [2020-10-14 21:20:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127631 to 127577. [2020-10-14 21:20:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127577 states. [2020-10-14 21:20:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127577 states to 127577 states and 178068 transitions. [2020-10-14 21:20:52,844 INFO L78 Accepts]: Start accepts. Automaton has 127577 states and 178068 transitions. Word has length 354 [2020-10-14 21:20:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:52,845 INFO L479 AbstractCegarLoop]: Abstraction has 127577 states and 178068 transitions. [2020-10-14 21:20:52,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:20:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 127577 states and 178068 transitions. [2020-10-14 21:20:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-14 21:20:52,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:52,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:20:52,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:20:52,874 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash -172805250, now seen corresponding path program 1 times [2020-10-14 21:20:52,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:52,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068315724] [2020-10-14 21:20:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:53,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:55,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:55,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-14 21:20:55,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:20:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2870 [2020-10-14 21:20:55,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:55,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-14 21:20:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:20:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:55,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:55,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:55,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:20:55,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:55,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:56,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:56,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:20:56,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:20:56,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:56,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:56,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:20:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:56,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:20:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:20:56,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:56,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:20:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:20:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:56,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:56,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:20:56,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 21:20:56,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:56,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:20:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:20:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-14 21:20:57,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068315724] [2020-10-14 21:20:57,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:20:57,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:20:57,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318447694] [2020-10-14 21:20:57,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:20:57,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:57,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:20:57,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:20:57,386 INFO L87 Difference]: Start difference. First operand 127577 states and 178068 transitions. Second operand 7 states.