/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem04_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:09:20,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:09:20,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:09:20,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:09:20,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:09:20,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:09:20,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:09:20,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:09:20,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:09:20,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:09:20,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:09:20,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:09:20,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:09:20,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:09:20,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:09:20,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:09:20,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:09:20,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:09:20,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:09:20,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:09:20,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:09:20,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:09:20,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:09:20,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:09:20,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:09:20,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:09:20,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:09:20,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:09:20,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:09:20,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:09:20,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:09:20,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:09:20,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:09:20,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:09:20,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:09:20,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:09:20,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:09:20,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:09:20,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:09:20,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:09:20,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:09:20,169 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 01:09:20,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:09:20,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:09:20,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:09:20,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:09:20,211 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:09:20,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:09:20,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:09:20,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:09:20,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:09:20,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:09:20,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:09:20,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:09:20,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:09:20,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:09:20,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:09:20,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:09:20,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:09:20,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:09:20,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:09:20,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:09:20,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:09:20,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:09:20,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:09:20,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:09:20,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:09:20,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:09:20,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:09:20,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:09:20,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:09:20,217 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:09:20,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:09:20,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:09:20,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:09:20,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:09:20,545 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:09:20,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label49.c [2020-10-14 01:09:20,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e098f217a/a9c8ea07846e4a68bdaa271dad428979/FLAG01cd6a841 [2020-10-14 01:09:21,410 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:09:21,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label49.c [2020-10-14 01:09:21,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e098f217a/a9c8ea07846e4a68bdaa271dad428979/FLAG01cd6a841 [2020-10-14 01:09:21,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e098f217a/a9c8ea07846e4a68bdaa271dad428979 [2020-10-14 01:09:21,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:09:21,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:09:21,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:09:21,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:09:21,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:09:21,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:09:21" (1/1) ... [2020-10-14 01:09:21,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fcb34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:21, skipping insertion in model container [2020-10-14 01:09:21,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:09:21" (1/1) ... [2020-10-14 01:09:21,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:09:22,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:09:24,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:09:24,104 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:09:24,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:09:24,903 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:09:24,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24 WrapperNode [2020-10-14 01:09:24,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:09:24,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:09:24,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:09:24,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:09:24,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:24,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:24,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:24,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:25,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:25,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:25,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (1/1) ... [2020-10-14 01:09:25,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:09:25,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:09:25,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:09:25,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:09:25,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (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 01:09:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:09:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:09:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:09:25,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:09:25,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:09:25,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:09:25,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:09:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:09:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:09:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:09:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:09:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:09:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:09:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:09:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:09:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:09:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:09:29,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:09:29,465 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:09:29,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:09:29 BoogieIcfgContainer [2020-10-14 01:09:29,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:09:29,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:09:29,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:09:29,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:09:29,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:09:21" (1/3) ... [2020-10-14 01:09:29,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aadc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:09:29, skipping insertion in model container [2020-10-14 01:09:29,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:09:24" (2/3) ... [2020-10-14 01:09:29,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aadc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:09:29, skipping insertion in model container [2020-10-14 01:09:29,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:09:29" (3/3) ... [2020-10-14 01:09:29,497 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label49.c [2020-10-14 01:09:29,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:09:29,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:09:29,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:09:29,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:09:29,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:09:29,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:09:29,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:09:29,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:09:29,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:09:29,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:09:29,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:09:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:09:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-14 01:09:29,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:29,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:09:29,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1186734646, now seen corresponding path program 1 times [2020-10-14 01:09:29,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:29,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155763471] [2020-10-14 01:09:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:35,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:35,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-14 01:09:35,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:09:35,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 01:09:35,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:35,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:35,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:09:35,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:09:35,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-14 01:09:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:09:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:36,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:09:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:36,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:09:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:37,407 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 01:09:37,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155763471] [2020-10-14 01:09:37,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:09:37,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:09:37,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107260043] [2020-10-14 01:09:37,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:09:37,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:37,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:09:37,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:09:37,430 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 01:09:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:09:45,897 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2020-10-14 01:09:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:09:45,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 803 [2020-10-14 01:09:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:09:45,956 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:09:45,957 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:09:45,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:09:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:09:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2020-10-14 01:09:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-14 01:09:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3015 transitions. [2020-10-14 01:09:46,178 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3015 transitions. Word has length 803 [2020-10-14 01:09:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:09:46,183 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 3015 transitions. [2020-10-14 01:09:46,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:09:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3015 transitions. [2020-10-14 01:09:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-14 01:09:46,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:46,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:09:46,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:09:46,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash 95020057, now seen corresponding path program 1 times [2020-10-14 01:09:46,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:46,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709256744] [2020-10-14 01:09:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:51,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-14 01:09:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:09:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 01:09:51,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:51,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:09:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:09:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 832 [2020-10-14 01:09:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 01:09:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:52,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:09:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:52,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:09:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:09:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:52,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:09:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:09:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 01:09:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:52,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:09:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 01:09:53,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709256744] [2020-10-14 01:09:53,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:09:53,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 01:09:53,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725850522] [2020-10-14 01:09:53,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 01:09:53,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:53,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 01:09:53,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:09:53,666 INFO L87 Difference]: Start difference. First operand 1687 states and 3015 transitions. Second operand 6 states. [2020-10-14 01:10:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:10:02,209 INFO L93 Difference]: Finished difference Result 5073 states and 9120 transitions. [2020-10-14 01:10:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:10:02,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 822 [2020-10-14 01:10:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:10:02,231 INFO L225 Difference]: With dead ends: 5073 [2020-10-14 01:10:02,231 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 01:10:02,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:10:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 01:10:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3388. [2020-10-14 01:10:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2020-10-14 01:10:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5777 transitions. [2020-10-14 01:10:02,322 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5777 transitions. Word has length 822 [2020-10-14 01:10:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:10:02,324 INFO L479 AbstractCegarLoop]: Abstraction has 3388 states and 5777 transitions. [2020-10-14 01:10:02,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 01:10:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5777 transitions. [2020-10-14 01:10:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2020-10-14 01:10:02,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:10:02,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:10:02,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:10:02,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:10:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:10:02,340 INFO L82 PathProgramCache]: Analyzing trace with hash -962271395, now seen corresponding path program 1 times [2020-10-14 01:10:02,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:10:02,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428961842] [2020-10-14 01:10:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:10:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:07,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:07,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-14 01:10:07,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:10:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 01:10:07,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:07,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:07,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:10:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:10:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 01:10:07,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:10:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:07,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:07,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:10:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:10:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:07,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:10:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:10:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 01:10:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 01:10:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:07,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:10:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 01:10:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:10:08,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428961842] [2020-10-14 01:10:08,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:10:08,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:10:08,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973183609] [2020-10-14 01:10:08,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:10:08,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:10:08,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:10:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:10:08,242 INFO L87 Difference]: Start difference. First operand 3388 states and 5777 transitions. Second operand 7 states. [2020-10-14 01:10:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:10:17,377 INFO L93 Difference]: Finished difference Result 10284 states and 17756 transitions. [2020-10-14 01:10:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:10:17,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 824 [2020-10-14 01:10:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:10:17,416 INFO L225 Difference]: With dead ends: 10284 [2020-10-14 01:10:17,416 INFO L226 Difference]: Without dead ends: 6902 [2020-10-14 01:10:17,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:10:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6902 states. [2020-10-14 01:10:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6902 to 6870. [2020-10-14 01:10:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6870 states. [2020-10-14 01:10:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10416 transitions. [2020-10-14 01:10:17,603 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10416 transitions. Word has length 824 [2020-10-14 01:10:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:10:17,604 INFO L479 AbstractCegarLoop]: Abstraction has 6870 states and 10416 transitions. [2020-10-14 01:10:17,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:10:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10416 transitions. [2020-10-14 01:10:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-14 01:10:17,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:10:17,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:10:17,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:10:17,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:10:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:10:17,632 INFO L82 PathProgramCache]: Analyzing trace with hash 467452763, now seen corresponding path program 1 times [2020-10-14 01:10:17,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:10:17,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453095483] [2020-10-14 01:10:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:10:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 885 [2020-10-14 01:10:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:10:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-14 01:10:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:22,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 01:10:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 01:10:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:10:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:23,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:10:23,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:10:23,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:23,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:10:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:23,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:10:23,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:10:23,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:23,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:23,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:23,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:10:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:23,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:23,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:10:23,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:10:23,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:23,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:10:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:10:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 01:10:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:23,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:10:23,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 01:10:23,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:23,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:10:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:10:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:10:24,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453095483] [2020-10-14 01:10:24,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:10:24,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:10:24,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950532670] [2020-10-14 01:10:24,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:10:24,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:10:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:10:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:10:24,046 INFO L87 Difference]: Start difference. First operand 6870 states and 10416 transitions. Second operand 7 states. [2020-10-14 01:10:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:10:39,261 INFO L93 Difference]: Finished difference Result 20663 states and 32309 transitions. [2020-10-14 01:10:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:10:39,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 865 [2020-10-14 01:10:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:10:39,329 INFO L225 Difference]: With dead ends: 20663 [2020-10-14 01:10:39,329 INFO L226 Difference]: Without dead ends: 13799 [2020-10-14 01:10:39,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:10:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13799 states. [2020-10-14 01:10:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13799 to 13751. [2020-10-14 01:10:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13751 states. [2020-10-14 01:10:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13751 states to 13751 states and 19680 transitions. [2020-10-14 01:10:39,739 INFO L78 Accepts]: Start accepts. Automaton has 13751 states and 19680 transitions. Word has length 865 [2020-10-14 01:10:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:10:39,740 INFO L479 AbstractCegarLoop]: Abstraction has 13751 states and 19680 transitions. [2020-10-14 01:10:39,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:10:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13751 states and 19680 transitions. [2020-10-14 01:10:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-14 01:10:39,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:10:39,789 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:39,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:10:39,790 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:10:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:10:39,790 INFO L82 PathProgramCache]: Analyzing trace with hash 993900631, now seen corresponding path program 1 times [2020-10-14 01:10:39,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:10:39,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492194810] [2020-10-14 01:10:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:10:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:45,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-10-14 01:10:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:10:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-14 01:10:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 01:10:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 01:10:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:10:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:45,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:45,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:10:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:10:45,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:45,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:10:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:45,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:45,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:10:45,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:45,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:10:45,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:45,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:45,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:10:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:10:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:10:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:45,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:10:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 01:10:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:45,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:45,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:10:45,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:45,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 01:10:45,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:45,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:45,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:10:45,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 01:10:45,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:10:45,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492194810] [2020-10-14 01:10:45,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:10:45,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:10:45,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364894730] [2020-10-14 01:10:45,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:10:45,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:10:45,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:10:45,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:10:45,824 INFO L87 Difference]: Start difference. First operand 13751 states and 19680 transitions. Second operand 8 states. [2020-10-14 01:10:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:10:59,133 INFO L93 Difference]: Finished difference Result 32056 states and 46777 transitions. [2020-10-14 01:10:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:10:59,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 895 [2020-10-14 01:10:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:10:59,195 INFO L225 Difference]: With dead ends: 32056 [2020-10-14 01:10:59,196 INFO L226 Difference]: Without dead ends: 18315 [2020-10-14 01:10:59,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:10:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18315 states. [2020-10-14 01:10:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18315 to 18242. [2020-10-14 01:10:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18242 states. [2020-10-14 01:10:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18242 states to 18242 states and 22863 transitions. [2020-10-14 01:10:59,664 INFO L78 Accepts]: Start accepts. Automaton has 18242 states and 22863 transitions. Word has length 895 [2020-10-14 01:10:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:10:59,665 INFO L479 AbstractCegarLoop]: Abstraction has 18242 states and 22863 transitions. [2020-10-14 01:10:59,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:10:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18242 states and 22863 transitions. [2020-10-14 01:10:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-14 01:10:59,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:10:59,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:10:59,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:10:59,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:10:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:10:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash 240950900, now seen corresponding path program 1 times [2020-10-14 01:10:59,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:10:59,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373774489] [2020-10-14 01:10:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:10:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 969 [2020-10-14 01:11:04,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:11:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 01:11:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:04,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:11:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 01:11:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:05,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:05,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:05,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:11:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:05,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:11:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:11:05,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:11:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:05,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:05,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 01:11:05,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:05,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 01:11:05,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:05,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:11:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 01:11:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:11:05,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373774489] [2020-10-14 01:11:05,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:11:05,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:11:05,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782416139] [2020-10-14 01:11:05,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:11:05,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:11:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:11:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:11:05,809 INFO L87 Difference]: Start difference. First operand 18242 states and 22863 transitions. Second operand 7 states. [2020-10-14 01:11:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:11:24,767 INFO L93 Difference]: Finished difference Result 68331 states and 90959 transitions. [2020-10-14 01:11:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:11:24,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 951 [2020-10-14 01:11:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:11:24,997 INFO L225 Difference]: With dead ends: 68331 [2020-10-14 01:11:24,998 INFO L226 Difference]: Without dead ends: 50099 [2020-10-14 01:11:25,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:11:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50099 states. [2020-10-14 01:11:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50099 to 50004. [2020-10-14 01:11:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50004 states. [2020-10-14 01:11:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50004 states to 50004 states and 63976 transitions. [2020-10-14 01:11:26,309 INFO L78 Accepts]: Start accepts. Automaton has 50004 states and 63976 transitions. Word has length 951 [2020-10-14 01:11:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:11:26,310 INFO L479 AbstractCegarLoop]: Abstraction has 50004 states and 63976 transitions. [2020-10-14 01:11:26,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:11:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 50004 states and 63976 transitions. [2020-10-14 01:11:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-14 01:11:26,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:26,461 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:26,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:11:26,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1826273218, now seen corresponding path program 1 times [2020-10-14 01:11:26,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:26,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674679079] [2020-10-14 01:11:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:31,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-14 01:11:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:11:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 01:11:31,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:31,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:11:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 01:11:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:31,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:31,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:11:31,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:31,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:11:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:31,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:31,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:11:31,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:11:31,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:31,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:11:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:11:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:31,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:31,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:11:31,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 01:11:31,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:31,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:11:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 01:11:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 01:11:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:31,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:11:31,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:11:31,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:31,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:11:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-14 01:11:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:31,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:31,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 194 proven. 85 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 01:11:32,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674679079] [2020-10-14 01:11:32,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:11:32,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:11:32,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769481594] [2020-10-14 01:11:32,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:11:32,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:11:32,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:11:32,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:11:32,488 INFO L87 Difference]: Start difference. First operand 50004 states and 63976 transitions. Second operand 7 states. [2020-10-14 01:11:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:11:43,977 INFO L93 Difference]: Finished difference Result 136132 states and 180734 transitions. [2020-10-14 01:11:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:11:43,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 985 [2020-10-14 01:11:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:11:45,948 INFO L225 Difference]: With dead ends: 136132 [2020-10-14 01:11:45,948 INFO L226 Difference]: Without dead ends: 86138 [2020-10-14 01:11:46,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:11:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86138 states. [2020-10-14 01:11:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86138 to 85712. [2020-10-14 01:11:47,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85712 states. [2020-10-14 01:11:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85712 states to 85712 states and 109676 transitions. [2020-10-14 01:11:47,888 INFO L78 Accepts]: Start accepts. Automaton has 85712 states and 109676 transitions. Word has length 985 [2020-10-14 01:11:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:11:47,889 INFO L479 AbstractCegarLoop]: Abstraction has 85712 states and 109676 transitions. [2020-10-14 01:11:47,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:11:47,889 INFO L276 IsEmpty]: Start isEmpty. Operand 85712 states and 109676 transitions. [2020-10-14 01:11:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2020-10-14 01:11:48,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:48,029 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:48,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:11:48,030 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1990449605, now seen corresponding path program 1 times [2020-10-14 01:11:48,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:48,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579585832] [2020-10-14 01:11:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1057 [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-14 01:11:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 01:11:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:53,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:53,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:53,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:53,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:53,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:11:53,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:53,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:53,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:11:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:53,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:53,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 01:11:53,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:53,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:11:53,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:53,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 01:11:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:53,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:11:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:11:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:53,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:11:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-14 01:11:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:11:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 01:11:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:53,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:11:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 01:11:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 01:11:54,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579585832] [2020-10-14 01:11:54,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:11:54,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:11:54,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290861730] [2020-10-14 01:11:54,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:11:54,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:11:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:11:54,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:11:54,392 INFO L87 Difference]: Start difference. First operand 85712 states and 109676 transitions. Second operand 7 states. [2020-10-14 01:12:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:05,587 INFO L93 Difference]: Finished difference Result 203415 states and 264056 transitions. [2020-10-14 01:12:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:12:05,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2020-10-14 01:12:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:06,027 INFO L225 Difference]: With dead ends: 203415 [2020-10-14 01:12:06,027 INFO L226 Difference]: Without dead ends: 117717 [2020-10-14 01:12:06,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:12:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117717 states. [2020-10-14 01:12:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117717 to 106693. [2020-10-14 01:12:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106693 states. [2020-10-14 01:12:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106693 states to 106693 states and 132018 transitions. [2020-10-14 01:12:08,446 INFO L78 Accepts]: Start accepts. Automaton has 106693 states and 132018 transitions. Word has length 1037 [2020-10-14 01:12:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:08,447 INFO L479 AbstractCegarLoop]: Abstraction has 106693 states and 132018 transitions. [2020-10-14 01:12:08,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:12:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 106693 states and 132018 transitions. [2020-10-14 01:12:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2020-10-14 01:12:08,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:08,596 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:12:08,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:12:08,597 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:08,598 INFO L82 PathProgramCache]: Analyzing trace with hash -237773984, now seen corresponding path program 1 times [2020-10-14 01:12:08,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:08,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637929182] [2020-10-14 01:12:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:13,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1262 [2020-10-14 01:12:13,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:12:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-14 01:12:13,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:13,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 01:12:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 01:12:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:14,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:14,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:12:14,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 01:12:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 01:12:14,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 01:12:14,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 01:12:14,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-14 01:12:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 01:12:14,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 01:12:14,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 01:12:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-14 01:12:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:12:14,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:12:14,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 01:12:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 538 proven. 132 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 01:12:15,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637929182] [2020-10-14 01:12:15,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:12:15,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:12:15,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797363602] [2020-10-14 01:12:15,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:12:15,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:15,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:12:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:12:15,820 INFO L87 Difference]: Start difference. First operand 106693 states and 132018 transitions. Second operand 7 states. [2020-10-14 01:12:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:31,813 INFO L93 Difference]: Finished difference Result 256922 states and 326086 transitions. [2020-10-14 01:12:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:12:31,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1240 [2020-10-14 01:12:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:32,423 INFO L225 Difference]: With dead ends: 256922 [2020-10-14 01:12:32,424 INFO L226 Difference]: Without dead ends: 152774 [2020-10-14 01:12:32,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:12:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152774 states. [2020-10-14 01:12:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152774 to 152311. [2020-10-14 01:12:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152311 states. [2020-10-14 01:12:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152311 states to 152311 states and 189622 transitions. [2020-10-14 01:12:36,289 INFO L78 Accepts]: Start accepts. Automaton has 152311 states and 189622 transitions. Word has length 1240 [2020-10-14 01:12:36,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:36,290 INFO L479 AbstractCegarLoop]: Abstraction has 152311 states and 189622 transitions. [2020-10-14 01:12:36,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:12:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand 152311 states and 189622 transitions. [2020-10-14 01:12:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2020-10-14 01:12:36,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:36,518 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:12:36,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:12:36,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:36,520 INFO L82 PathProgramCache]: Analyzing trace with hash 587507923, now seen corresponding path program 1 times [2020-10-14 01:12:36,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:36,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276258918] [2020-10-14 01:12:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1475 [2020-10-14 01:12:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:12:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 01:12:41,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:41,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:41,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-14 01:12:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 01:12:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:42,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:42,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:42,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:12:42,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:42,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:42,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 01:12:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-14 01:12:42,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:42,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-14 01:12:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:12:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:42,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:42,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 01:12:42,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 01:12:42,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:42,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 01:12:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:43,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-14 01:12:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:43,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 01:12:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-14 01:12:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:43,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:43,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 01:12:43,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:12:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:43,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 01:12:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 815 proven. 139 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-14 01:12:44,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276258918] [2020-10-14 01:12:44,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:12:44,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:12:44,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135015395] [2020-10-14 01:12:44,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:12:44,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:12:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:12:44,844 INFO L87 Difference]: Start difference. First operand 152311 states and 189622 transitions. Second operand 8 states.