/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:03:38,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:03:38,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:03:38,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:03:38,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:03:38,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:03:38,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:03:38,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:03:38,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:03:38,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:03:38,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:03:38,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:03:38,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:03:38,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:03:38,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:03:38,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:03:38,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:03:38,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:03:38,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:03:38,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:03:38,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:03:38,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:03:38,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:03:38,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:03:38,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:03:38,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:03:38,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:03:38,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:03:38,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:03:38,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:03:38,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:03:38,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:03:38,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:03:38,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:03:38,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:03:38,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:03:38,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:03:38,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:03:38,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:03:38,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:03:38,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:03:38,943 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 [2020-10-12 12:03:38,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:03:38,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:03:38,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:03:38,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:03:38,981 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:03:38,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:03:38,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:03:38,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:03:38,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:03:38,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:03:38,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:03:38,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:03:38,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:03:38,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:03:38,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:03:38,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:03:38,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:03:38,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:03:38,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:03:38,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:03:38,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:03:38,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:03:38,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:03:38,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:03:38,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:03:38,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:03:38,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:03:38,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:03:38,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:03:38,987 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:03:39,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:03:39,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:03:39,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:03:39,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:03:39,303 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:03:39,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label04.c [2020-10-12 12:03:39,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e74a58429/c1e9a92d4d9f456c82931088e84397e8/FLAG911d78930 [2020-10-12 12:03:40,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:03:40,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label04.c [2020-10-12 12:03:40,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e74a58429/c1e9a92d4d9f456c82931088e84397e8/FLAG911d78930 [2020-10-12 12:03:40,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e74a58429/c1e9a92d4d9f456c82931088e84397e8 [2020-10-12 12:03:40,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:03:40,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:03:40,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:03:40,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:03:40,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:03:40,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:40" (1/1) ... [2020-10-12 12:03:40,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770ea115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:40, skipping insertion in model container [2020-10-12 12:03:40,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:40" (1/1) ... [2020-10-12 12:03:40,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:03:41,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:03:43,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:03:43,592 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:03:44,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:03:44,710 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:03:44,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44 WrapperNode [2020-10-12 12:03:44,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:03:44,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:03:44,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:03:44,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:03:44,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:44,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:44,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:44,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:44,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:45,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:45,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (1/1) ... [2020-10-12 12:03:45,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:03:45,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:03:45,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:03:45,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:03:45,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (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 [2020-10-12 12:03:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:03:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:03:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:03:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:03:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:03:45,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:03:45,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:03:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:03:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:03:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:03:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:03:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:03:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:03:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:03:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:03:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:03:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:03:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:03:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:03:52,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:03:52,449 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:03:52,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:52 BoogieIcfgContainer [2020-10-12 12:03:52,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:03:52,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:03:52,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:03:52,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:03:52,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:40" (1/3) ... [2020-10-12 12:03:52,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115a70b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:52, skipping insertion in model container [2020-10-12 12:03:52,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:44" (2/3) ... [2020-10-12 12:03:52,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115a70b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:52, skipping insertion in model container [2020-10-12 12:03:52,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:52" (3/3) ... [2020-10-12 12:03:52,485 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label04.c [2020-10-12 12:03:52,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:03:52,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:03:52,524 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:03:52,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:03:52,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:03:52,558 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:03:52,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:03:52,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:03:52,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:03:52,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:03:52,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:03:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:03:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-12 12:03:52,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:03:52,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:03:52,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:03:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:03:52,673 INFO L82 PathProgramCache]: Analyzing trace with hash -727708040, now seen corresponding path program 1 times [2020-10-12 12:03:52,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:03:52,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339231669] [2020-10-12 12:03:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:03:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:03:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:58,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:03:58,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-12 12:03:58,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:03:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 12:03:58,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:03:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:03:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:03:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:03:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:04:02,144 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 12:04:02,352 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-12 12:04:02,534 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-12 12:04:02,748 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-12 12:04:02,921 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 12:04:03,088 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 12:04:03,301 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 12:04:03,536 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-12 12:04:03,920 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 12:04:04,139 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 12:04:04,299 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-12 12:04:04,657 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:04:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:04:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:04:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:04:04,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:04:04,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:04:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:04:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 12:04:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:04:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:04:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:04:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:04:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:04:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:04:15,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339231669] [2020-10-12 12:04:15,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:04:15,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:04:15,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510279205] [2020-10-12 12:04:15,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:04:15,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:04:15,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:04:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:04:15,984 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:04:16,381 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:04:17,123 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-12 12:04:17,800 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-12 12:04:18,557 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 174 [2020-10-12 12:04:22,491 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2020-10-12 12:04:25,848 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-10-12 12:04:28,293 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-12 12:04:29,002 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 169 [2020-10-12 12:04:30,277 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 168 [2020-10-12 12:04:39,211 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-12 12:04:39,941 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 178 [2020-10-12 12:04:42,895 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 178 [2020-10-12 12:04:49,878 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 161 [2020-10-12 12:04:50,613 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 165 [2020-10-12 12:04:52,936 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 163 [2020-10-12 12:05:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:05:04,421 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:05:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:05:04,423 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 955 [2020-10-12 12:05:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:05:04,470 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:05:04,470 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:05:04,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:05:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:05:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:05:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:05:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:05:04,666 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 955 [2020-10-12 12:05:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:05:04,669 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:05:04,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:05:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:05:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-12 12:05:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:04,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:05:04,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:05:04,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1943657157, now seen corresponding path program 1 times [2020-10-12 12:05:04,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:04,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447971078] [2020-10-12 12:05:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-12 12:05:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:05:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 12:05:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:05:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:05:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 962 [2020-10-12 12:05:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:11,093 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:05:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:05:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:11,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:05:11,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:05:11,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:05:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:05:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:11,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:05:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:11,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:05:11,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 12:05:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:05:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:05:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:05:12,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447971078] [2020-10-12 12:05:12,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:05:12,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:05:12,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234835655] [2020-10-12 12:05:12,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:05:12,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:05:12,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:05:12,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:05:12,411 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:05:12,567 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:05:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:05:26,916 INFO L93 Difference]: Finished difference Result 4407 states and 7430 transitions. [2020-10-12 12:05:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:05:26,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1025 [2020-10-12 12:05:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:05:26,944 INFO L225 Difference]: With dead ends: 4407 [2020-10-12 12:05:26,944 INFO L226 Difference]: Without dead ends: 3148 [2020-10-12 12:05:26,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:05:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2020-10-12 12:05:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3127. [2020-10-12 12:05:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-12 12:05:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4643 transitions. [2020-10-12 12:05:27,060 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4643 transitions. Word has length 1025 [2020-10-12 12:05:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:05:27,062 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 4643 transitions. [2020-10-12 12:05:27,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:05:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4643 transitions. [2020-10-12 12:05:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-12 12:05:27,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:27,085 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:05:27,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:05:27,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:27,086 INFO L82 PathProgramCache]: Analyzing trace with hash 599339322, now seen corresponding path program 1 times [2020-10-12 12:05:27,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:27,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615881014] [2020-10-12 12:05:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-12 12:05:32,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:05:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-12 12:05:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:05:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:05:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:05:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:33,010 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:05:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:05:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:05:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:05:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:05:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:05:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:05:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:05:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 12:05:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:05:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:05:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:05:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:05:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:05:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:05:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:05:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 12:05:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:05:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:05:34,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615881014] [2020-10-12 12:05:34,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:05:34,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:05:34,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379533959] [2020-10-12 12:05:34,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:05:34,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:05:34,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:05:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:05:34,420 INFO L87 Difference]: Start difference. First operand 3127 states and 4643 transitions. Second operand 7 states. [2020-10-12 12:05:34,678 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:05:35,771 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 12:05:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:05:55,255 INFO L93 Difference]: Finished difference Result 6729 states and 10297 transitions. [2020-10-12 12:05:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 12:05:55,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1038 [2020-10-12 12:05:55,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:05:55,278 INFO L225 Difference]: With dead ends: 6729 [2020-10-12 12:05:55,278 INFO L226 Difference]: Without dead ends: 4362 [2020-10-12 12:05:55,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:05:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2020-10-12 12:05:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4291. [2020-10-12 12:05:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4291 states. [2020-10-12 12:05:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6295 transitions. [2020-10-12 12:05:55,403 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6295 transitions. Word has length 1038 [2020-10-12 12:05:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:05:55,404 INFO L479 AbstractCegarLoop]: Abstraction has 4291 states and 6295 transitions. [2020-10-12 12:05:55,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:05:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6295 transitions. [2020-10-12 12:05:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-12 12:05:55,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:55,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:05:55,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:05:55,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:55,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1918638242, now seen corresponding path program 1 times [2020-10-12 12:05:55,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:55,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679345516] [2020-10-12 12:05:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:00,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:00,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-12 12:06:00,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:06:00,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 12:06:00,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 12:06:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:06:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-12 12:06:00,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:02,937 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-12 12:06:03,150 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-12 12:06:03,386 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-12 12:06:03,583 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-12 12:06:03,759 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-12 12:06:04,050 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-12 12:06:04,225 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-12 12:06:04,373 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-12 12:06:04,680 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:06:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:06:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:04,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:04,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:06:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:06:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:05,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:05,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:06:05,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 12:06:05,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:06:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:06:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:06:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:06:13,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679345516] [2020-10-12 12:06:13,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:06:13,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 12:06:13,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253005110] [2020-10-12 12:06:13,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:06:13,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:06:13,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:06:13,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:06:13,928 INFO L87 Difference]: Start difference. First operand 4291 states and 6295 transitions. Second operand 18 states. [2020-10-12 12:06:14,207 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 12:06:16,700 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-12 12:06:16,989 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-12 12:06:17,375 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-10-12 12:06:18,165 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 179 [2020-10-12 12:06:19,070 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2020-10-12 12:06:20,980 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 213 DAG size of output: 196 [2020-10-12 12:06:24,637 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 215 DAG size of output: 193 [2020-10-12 12:06:34,046 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 171 [2020-10-12 12:06:34,869 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 185 [2020-10-12 12:06:36,349 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 182 [2020-10-12 12:06:47,079 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 196 DAG size of output: 179 [2020-10-12 12:06:48,593 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 196 DAG size of output: 175 [2020-10-12 12:07:14,868 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 12:07:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:07:31,496 INFO L93 Difference]: Finished difference Result 12824 states and 20382 transitions. [2020-10-12 12:07:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 12:07:31,497 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1077 [2020-10-12 12:07:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:07:31,539 INFO L225 Difference]: With dead ends: 12824 [2020-10-12 12:07:31,539 INFO L226 Difference]: Without dead ends: 9293 [2020-10-12 12:07:31,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:07:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9293 states. [2020-10-12 12:07:31,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9293 to 9238. [2020-10-12 12:07:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9238 states. [2020-10-12 12:07:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9238 states to 9238 states and 13281 transitions. [2020-10-12 12:07:31,776 INFO L78 Accepts]: Start accepts. Automaton has 9238 states and 13281 transitions. Word has length 1077 [2020-10-12 12:07:31,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:07:31,777 INFO L479 AbstractCegarLoop]: Abstraction has 9238 states and 13281 transitions. [2020-10-12 12:07:31,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:07:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9238 states and 13281 transitions. [2020-10-12 12:07:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-12 12:07:31,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:07:31,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:07:31,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:07:31,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:07:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:07:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1755030613, now seen corresponding path program 1 times [2020-10-12 12:07:31,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:07:31,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050095840] [2020-10-12 12:07:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:07:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking...