/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=NARROWEST --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/Problem05_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:46:53,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:46:53,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:46:53,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:46:53,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:46:53,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:46:53,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:46:53,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:46:53,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:46:53,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:46:53,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:46:53,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:46:53,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:46:53,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:46:53,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:46:53,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:46:53,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:46:53,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:46:53,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:46:53,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:46:53,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:46:53,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:46:53,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:46:53,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:46:53,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:46:53,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:46:53,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:46:53,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:46:53,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:46:53,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:46:53,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:46:53,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:46:53,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:46:53,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:46:53,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:46:53,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:46:53,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:46:53,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:46:53,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:46:53,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:46:53,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:46:53,924 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 [2020-10-13 06:46:53,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:46:53,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:46:53,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:46:53,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:46:53,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:46:53,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:46:53,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:46:53,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:46:53,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:46:53,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:46:53,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:46:53,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:46:53,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:46:53,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:46:53,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:46:53,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:46:53,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:46:53,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:46:53,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:46:53,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:46:53,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:46:53,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:46:53,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:46:53,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:46:53,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:46:53,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:46:53,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:46:53,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:46:53,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:46:53,959 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:46:54,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:46:54,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:46:54,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:46:54,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:46:54,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:46:54,281 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label07.c [2020-10-13 06:46:54,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eca4a6709/1762519b41124e0daed0cbb991176afe/FLAG6f8a27845 [2020-10-13 06:46:55,321 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:46:55,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label07.c [2020-10-13 06:46:55,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eca4a6709/1762519b41124e0daed0cbb991176afe/FLAG6f8a27845 [2020-10-13 06:46:55,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eca4a6709/1762519b41124e0daed0cbb991176afe [2020-10-13 06:46:55,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:46:55,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:46:55,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:46:55,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:46:55,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:46:55,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:55" (1/1) ... [2020-10-13 06:46:55,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:55, skipping insertion in model container [2020-10-13 06:46:55,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:55" (1/1) ... [2020-10-13 06:46:55,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:46:56,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:46:59,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:46:59,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:47:00,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:47:00,379 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:47:00,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00 WrapperNode [2020-10-13 06:47:00,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:47:00,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:47:00,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:47:00,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:47:00,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:00,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:00,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:00,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:00,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:00,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:00,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (1/1) ... [2020-10-13 06:47:01,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:47:01,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:47:01,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:47:01,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:47:01,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (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 [2020-10-13 06:47:01,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:47:01,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:47:01,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:47:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:47:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:47:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:47:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:47:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:47:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:47:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:47:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:47:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:47:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:47:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:47:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:47:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:47:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:47:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:47:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:47:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:47:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:47:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:47:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:47:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:47:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:47:09,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:47:09,422 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:47:09,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:09 BoogieIcfgContainer [2020-10-13 06:47:09,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:47:09,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:47:09,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:47:09,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:47:09,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:46:55" (1/3) ... [2020-10-13 06:47:09,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282be725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:09, skipping insertion in model container [2020-10-13 06:47:09,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:00" (2/3) ... [2020-10-13 06:47:09,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282be725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:09, skipping insertion in model container [2020-10-13 06:47:09,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:09" (3/3) ... [2020-10-13 06:47:09,456 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label07.c [2020-10-13 06:47:09,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:47:09,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:47:09,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:47:09,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:47:09,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:47:09,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:47:09,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:47:09,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:47:09,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:47:09,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:47:09,524 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:47:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:47:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-13 06:47:09,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:47:09,676 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:47:09,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:47:09,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:47:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1946977160, now seen corresponding path program 1 times [2020-10-13 06:47:09,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:47:09,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349825215] [2020-10-13 06:47:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:47:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1703 [2020-10-13 06:47:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 06:47:15,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:47:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:47:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1697 [2020-10-13 06:47:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:47:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:47:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:47:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:47:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:47:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:47:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:47:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:47:19,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349825215] [2020-10-13 06:47:19,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:47:19,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 06:47:19,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343790414] [2020-10-13 06:47:19,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 06:47:19,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:47:19,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 06:47:19,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 06:47:19,202 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-13 06:47:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:47:35,862 INFO L93 Difference]: Finished difference Result 6360 states and 11961 transitions. [2020-10-13 06:47:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:47:35,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1681 [2020-10-13 06:47:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:47:35,922 INFO L225 Difference]: With dead ends: 6360 [2020-10-13 06:47:35,922 INFO L226 Difference]: Without dead ends: 4074 [2020-10-13 06:47:35,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:47:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2020-10-13 06:47:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4004. [2020-10-13 06:47:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4004 states. [2020-10-13 06:47:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6504 transitions. [2020-10-13 06:47:36,218 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 6504 transitions. Word has length 1681 [2020-10-13 06:47:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:47:36,222 INFO L479 AbstractCegarLoop]: Abstraction has 4004 states and 6504 transitions. [2020-10-13 06:47:36,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 06:47:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 6504 transitions. [2020-10-13 06:47:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-13 06:47:36,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:47:36,336 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:47:36,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:47:36,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:47:36,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:47:36,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1089461255, now seen corresponding path program 1 times [2020-10-13 06:47:36,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:47:36,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480336123] [2020-10-13 06:47:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:47:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:41,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:41,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-13 06:47:41,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:47:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-13 06:47:41,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:47:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:47:41,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:47:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:47:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:47:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:42,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:42,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:47:42,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:47:42,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:47:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:47:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:47:43,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:47:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:43,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:43,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:47:43,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:47:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:47:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:47:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:47:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:47:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:47:44,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480336123] [2020-10-13 06:47:44,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:47:44,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:47:44,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007472404] [2020-10-13 06:47:44,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:47:44,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:47:44,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:47:44,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:47:44,244 INFO L87 Difference]: Start difference. First operand 4004 states and 6504 transitions. Second operand 7 states. [2020-10-13 06:48:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:48:17,687 INFO L93 Difference]: Finished difference Result 15369 states and 25428 transitions. [2020-10-13 06:48:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:48:17,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1692 [2020-10-13 06:48:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:48:17,744 INFO L225 Difference]: With dead ends: 15369 [2020-10-13 06:48:17,745 INFO L226 Difference]: Without dead ends: 11371 [2020-10-13 06:48:17,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:48:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2020-10-13 06:48:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 11316. [2020-10-13 06:48:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11316 states. [2020-10-13 06:48:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11316 states to 11316 states and 15375 transitions. [2020-10-13 06:48:18,094 INFO L78 Accepts]: Start accepts. Automaton has 11316 states and 15375 transitions. Word has length 1692 [2020-10-13 06:48:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:48:18,095 INFO L479 AbstractCegarLoop]: Abstraction has 11316 states and 15375 transitions. [2020-10-13 06:48:18,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:48:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 11316 states and 15375 transitions. [2020-10-13 06:48:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-13 06:48:18,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:48:18,162 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:48:18,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:48:18,163 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:48:18,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:48:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash 977117623, now seen corresponding path program 1 times [2020-10-13 06:48:18,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:48:18,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778251744] [2020-10-13 06:48:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:48:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-13 06:48:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:48:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:48:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:48:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:48:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:48:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:48:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:24,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:24,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:48:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:48:24,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:48:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:48:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:24,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:48:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:24,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:24,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 06:48:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:48:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:48:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:48:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:48:25,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778251744] [2020-10-13 06:48:25,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:48:25,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:48:25,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928126536] [2020-10-13 06:48:25,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:48:25,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:48:25,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:48:25,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:48:25,427 INFO L87 Difference]: Start difference. First operand 11316 states and 15375 transitions. Second operand 7 states. [2020-10-13 06:48:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:48:47,528 INFO L93 Difference]: Finished difference Result 26582 states and 35877 transitions. [2020-10-13 06:48:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:48:47,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1703 [2020-10-13 06:48:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:48:47,587 INFO L225 Difference]: With dead ends: 26582 [2020-10-13 06:48:47,588 INFO L226 Difference]: Without dead ends: 15272 [2020-10-13 06:48:47,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:48:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2020-10-13 06:48:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 15192. [2020-10-13 06:48:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15192 states. [2020-10-13 06:48:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15192 states to 15192 states and 19741 transitions. [2020-10-13 06:48:47,976 INFO L78 Accepts]: Start accepts. Automaton has 15192 states and 19741 transitions. Word has length 1703 [2020-10-13 06:48:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:48:47,979 INFO L479 AbstractCegarLoop]: Abstraction has 15192 states and 19741 transitions. [2020-10-13 06:48:47,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:48:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15192 states and 19741 transitions. [2020-10-13 06:48:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-13 06:48:48,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:48:48,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:48:48,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:48:48,076 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:48:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:48:48,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1872130108, now seen corresponding path program 1 times [2020-10-13 06:48:48,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:48:48,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688718881] [2020-10-13 06:48:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:48:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:53,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:53,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-13 06:48:53,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:48:53,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 06:48:53,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 06:48:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:48:53,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:48:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:53,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:48:53,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:48:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:48:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:48:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:48:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:53,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:53,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 06:48:53,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:53,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:48:53,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:48:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 06:48:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:48:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 06:48:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:53,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:48:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:48:53,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:48:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:48:53,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:48:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:48:55,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688718881] [2020-10-13 06:48:55,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:48:55,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:48:55,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055416458] [2020-10-13 06:48:55,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:48:55,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:48:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:48:55,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:48:55,011 INFO L87 Difference]: Start difference. First operand 15192 states and 19741 transitions. Second operand 7 states. [2020-10-13 06:49:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:49:22,420 INFO L93 Difference]: Finished difference Result 44606 states and 63104 transitions. [2020-10-13 06:49:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:49:22,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1707 [2020-10-13 06:49:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:49:22,567 INFO L225 Difference]: With dead ends: 44606 [2020-10-13 06:49:22,568 INFO L226 Difference]: Without dead ends: 29420 [2020-10-13 06:49:22,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:49:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29420 states. [2020-10-13 06:49:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29420 to 28762. [2020-10-13 06:49:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28762 states. [2020-10-13 06:49:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28762 states to 28762 states and 36070 transitions. [2020-10-13 06:49:23,402 INFO L78 Accepts]: Start accepts. Automaton has 28762 states and 36070 transitions. Word has length 1707 [2020-10-13 06:49:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:49:23,403 INFO L479 AbstractCegarLoop]: Abstraction has 28762 states and 36070 transitions. [2020-10-13 06:49:23,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:49:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 28762 states and 36070 transitions. [2020-10-13 06:49:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-13 06:49:23,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:49:23,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:49:23,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:49:23,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:49:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:49:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash -496475767, now seen corresponding path program 1 times [2020-10-13 06:49:23,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:49:23,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311230310] [2020-10-13 06:49:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:49:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-13 06:49:28,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:49:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-13 06:49:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:49:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:49:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 06:49:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:49:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:49:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:29,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:29,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:29,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:49:29,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:29,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:49:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:49:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:49:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:49:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:49:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:29,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:49:29,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:49:29,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:49:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:49:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:49:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:49:30,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311230310] [2020-10-13 06:49:30,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:49:30,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:49:30,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398963861] [2020-10-13 06:49:30,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:49:30,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:49:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:49:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:49:30,324 INFO L87 Difference]: Start difference. First operand 28762 states and 36070 transitions. Second operand 7 states. [2020-10-13 06:49:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:49:55,220 INFO L93 Difference]: Finished difference Result 70489 states and 92962 transitions. [2020-10-13 06:49:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:49:55,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1718 [2020-10-13 06:49:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:49:55,327 INFO L225 Difference]: With dead ends: 70489 [2020-10-13 06:49:55,327 INFO L226 Difference]: Without dead ends: 41733 [2020-10-13 06:49:55,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:49:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41733 states. [2020-10-13 06:49:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41733 to 41655. [2020-10-13 06:49:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41655 states. [2020-10-13 06:49:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41655 states to 41655 states and 52349 transitions. [2020-10-13 06:49:56,149 INFO L78 Accepts]: Start accepts. Automaton has 41655 states and 52349 transitions. Word has length 1718 [2020-10-13 06:49:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:49:56,150 INFO L479 AbstractCegarLoop]: Abstraction has 41655 states and 52349 transitions. [2020-10-13 06:49:56,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:49:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 41655 states and 52349 transitions. [2020-10-13 06:49:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2020-10-13 06:49:56,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:49:56,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:49:56,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:49:56,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:49:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:49:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash -264487931, now seen corresponding path program 1 times [2020-10-13 06:49:56,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:49:56,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684993332] [2020-10-13 06:49:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:49:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:01,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:01,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1759 [2020-10-13 06:50:01,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:50:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 06:50:01,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:50:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:50:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 06:50:01,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:50:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:01,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:01,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:50:01,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:50:01,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:50:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:50:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:50:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:50:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:02,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 06:50:02,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 06:50:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:50:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:50:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 06:50:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:50:03,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684993332] [2020-10-13 06:50:03,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:50:03,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:50:03,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313143764] [2020-10-13 06:50:03,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:50:03,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:50:03,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:50:03,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:50:03,192 INFO L87 Difference]: Start difference. First operand 41655 states and 52349 transitions. Second operand 7 states. [2020-10-13 06:50:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:50:29,950 INFO L93 Difference]: Finished difference Result 120023 states and 161619 transitions. [2020-10-13 06:50:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:50:29,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1735 [2020-10-13 06:50:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:50:30,165 INFO L225 Difference]: With dead ends: 120023 [2020-10-13 06:50:30,165 INFO L226 Difference]: Without dead ends: 78374 [2020-10-13 06:50:30,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:50:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78374 states. [2020-10-13 06:50:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78374 to 77700. [2020-10-13 06:50:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77700 states. [2020-10-13 06:50:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77700 states to 77700 states and 98481 transitions. [2020-10-13 06:50:31,857 INFO L78 Accepts]: Start accepts. Automaton has 77700 states and 98481 transitions. Word has length 1735 [2020-10-13 06:50:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:50:31,858 INFO L479 AbstractCegarLoop]: Abstraction has 77700 states and 98481 transitions. [2020-10-13 06:50:31,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:50:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 77700 states and 98481 transitions. [2020-10-13 06:50:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1810 [2020-10-13 06:50:31,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:50:31,997 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:50:31,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:50:31,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:50:31,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:50:31,999 INFO L82 PathProgramCache]: Analyzing trace with hash -980067572, now seen corresponding path program 1 times [2020-10-13 06:50:31,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:50:31,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116099022] [2020-10-13 06:50:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:50:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking...