/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:53:44,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:53:44,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:53:44,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:53:44,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:53:44,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:53:44,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:53:44,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:53:44,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:53:44,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:53:44,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:53:44,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:53:44,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:53:44,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:53:44,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:53:44,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:53:44,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:53:44,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:53:44,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:53:44,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:53:44,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:53:44,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:53:44,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:53:44,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:53:44,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:53:44,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:53:44,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:53:44,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:53:44,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:53:44,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:53:44,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:53:44,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:53:44,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:53:44,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:53:44,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:53:44,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:53:44,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:53:44,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:53:44,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:53:44,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:53:44,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:53:44,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:53:45,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:53:45,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:53:45,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:53:45,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:53:45,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:53:45,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:53:45,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:53:45,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:53:45,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:53:45,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:53:45,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:53:45,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:53:45,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:53:45,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:53:45,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:53:45,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:53:45,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:53:45,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:53:45,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:53:45,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:53:45,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:53:45,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:53:45,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:53:45,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:53:45,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:53:45,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:53:45,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:53:45,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:53:45,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:53:45,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:53:45,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:53:45,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:53:45,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:53:45,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:53:45,328 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:53:45,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label17.c [2020-10-14 19:53:45,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/549e6458c/da25e3e1676948dc992e736ac7ef6cde/FLAGb1cf89244 [2020-10-14 19:53:46,342 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:53:46,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label17.c [2020-10-14 19:53:46,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/549e6458c/da25e3e1676948dc992e736ac7ef6cde/FLAGb1cf89244 [2020-10-14 19:53:46,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/549e6458c/da25e3e1676948dc992e736ac7ef6cde [2020-10-14 19:53:46,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:53:46,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:53:46,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:53:46,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:53:46,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:53:46,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:53:46" (1/1) ... [2020-10-14 19:53:46,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:46, skipping insertion in model container [2020-10-14 19:53:46,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:53:46" (1/1) ... [2020-10-14 19:53:46,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:53:47,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:53:49,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:53:49,439 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:53:50,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:53:50,586 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:53:50,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50 WrapperNode [2020-10-14 19:53:50,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:53:50,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:53:50,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:53:50,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:53:50,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:50,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:50,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:50,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:50,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:50,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:51,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... [2020-10-14 19:53:51,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:53:51,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:53:51,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:53:51,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:53:51,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:53:51,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:53:51,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:53:51,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:53:51,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:53:51,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:53:51,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:53:51,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:53:51,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:53:51,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:53:51,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:53:51,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:53:51,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:53:51,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:53:51,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:53:51,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:53:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:53:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:53:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:53:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:53:58,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:53:58,428 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:53:58,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:53:58 BoogieIcfgContainer [2020-10-14 19:53:58,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:53:58,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:53:58,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:53:58,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:53:58,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:53:46" (1/3) ... [2020-10-14 19:53:58,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1889bd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:53:58, skipping insertion in model container [2020-10-14 19:53:58,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:53:50" (2/3) ... [2020-10-14 19:53:58,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1889bd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:53:58, skipping insertion in model container [2020-10-14 19:53:58,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:53:58" (3/3) ... [2020-10-14 19:53:58,459 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label17.c [2020-10-14 19:53:58,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:53:58,479 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:53:58,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:53:58,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:53:58,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:53:58,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:53:58,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:53:58,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:53:58,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:53:58,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:53:58,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:53:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 19:53:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-14 19:53:58,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:53:58,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:53:58,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:53:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:53:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash -671628657, now seen corresponding path program 1 times [2020-10-14 19:53:58,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:53:58,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890365160] [2020-10-14 19:53:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:53:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:04,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:04,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-14 19:54:04,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:54:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-14 19:54:04,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:04,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:54:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:54:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 992 [2020-10-14 19:54:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:54:05,929 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:54:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:54:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:54:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:54:05,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:05,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:54:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:54:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:54:07,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890365160] [2020-10-14 19:54:07,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:54:07,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:54:07,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014092779] [2020-10-14 19:54:07,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:54:07,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:54:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:54:07,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:54:07,106 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 19:54:07,315 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:54:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:54:20,348 INFO L93 Difference]: Finished difference Result 3759 states and 7019 transitions. [2020-10-14 19:54:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:54:20,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 982 [2020-10-14 19:54:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:54:20,393 INFO L225 Difference]: With dead ends: 3759 [2020-10-14 19:54:20,394 INFO L226 Difference]: Without dead ends: 2380 [2020-10-14 19:54:20,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:54:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-10-14 19:54:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2337. [2020-10-14 19:54:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-10-14 19:54:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3804 transitions. [2020-10-14 19:54:20,574 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3804 transitions. Word has length 982 [2020-10-14 19:54:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:54:20,576 INFO L479 AbstractCegarLoop]: Abstraction has 2337 states and 3804 transitions. [2020-10-14 19:54:20,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:54:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3804 transitions. [2020-10-14 19:54:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-14 19:54:20,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:54:20,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:54:20,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:54:20,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:54:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:54:20,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1517688186, now seen corresponding path program 1 times [2020-10-14 19:54:20,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:54:20,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453533581] [2020-10-14 19:54:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:54:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1008 [2020-10-14 19:54:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:54:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5271 [2020-10-14 19:54:26,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:26,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:54:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:54:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 989 [2020-10-14 19:54:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:27,354 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:54:27,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:54:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:54:27,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:54:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:27,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:54:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:54:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 19:54:27,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:54:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:27,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:54:27,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:54:27,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:27,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:54:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:54:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:54:28,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453533581] [2020-10-14 19:54:28,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:54:28,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:54:28,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733399433] [2020-10-14 19:54:28,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:54:28,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:54:28,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:54:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:54:28,460 INFO L87 Difference]: Start difference. First operand 2337 states and 3804 transitions. Second operand 5 states. [2020-10-14 19:54:28,675 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:54:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:54:43,740 INFO L93 Difference]: Finished difference Result 6896 states and 11353 transitions. [2020-10-14 19:54:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:54:43,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 990 [2020-10-14 19:54:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:54:43,770 INFO L225 Difference]: With dead ends: 6896 [2020-10-14 19:54:43,770 INFO L226 Difference]: Without dead ends: 4565 [2020-10-14 19:54:43,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:54:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2020-10-14 19:54:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4504. [2020-10-14 19:54:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2020-10-14 19:54:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6997 transitions. [2020-10-14 19:54:43,999 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6997 transitions. Word has length 990 [2020-10-14 19:54:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:54:44,001 INFO L479 AbstractCegarLoop]: Abstraction has 4504 states and 6997 transitions. [2020-10-14 19:54:44,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:54:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6997 transitions. [2020-10-14 19:54:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-14 19:54:44,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:54:44,023 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:54:44,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:54:44,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:54:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:54:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1286175332, now seen corresponding path program 1 times [2020-10-14 19:54:44,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:54:44,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411332911] [2020-10-14 19:54:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:54:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:49,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-14 19:54:49,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:54:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5205 [2020-10-14 19:54:49,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:49,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 19:54:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:54:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1009 [2020-10-14 19:54:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:50,612 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:54:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:54:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:50,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:54:50,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:54:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:54:50,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:50,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:54:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:54:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:54:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:54:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:54:50,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:54:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:54:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:54:50,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:54:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 19:54:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:54:50,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:54:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:54:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:54:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:54:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:54:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:54:51,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411332911] [2020-10-14 19:54:51,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:54:51,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:54:51,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700227903] [2020-10-14 19:54:51,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:54:51,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:54:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:54:51,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:54:51,878 INFO L87 Difference]: Start difference. First operand 4504 states and 6997 transitions. Second operand 6 states. [2020-10-14 19:54:52,010 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:55:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:55:05,978 INFO L93 Difference]: Finished difference Result 13243 states and 20861 transitions. [2020-10-14 19:55:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:55:05,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 997 [2020-10-14 19:55:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:55:06,019 INFO L225 Difference]: With dead ends: 13243 [2020-10-14 19:55:06,019 INFO L226 Difference]: Without dead ends: 8745 [2020-10-14 19:55:06,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:55:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8745 states. [2020-10-14 19:55:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8745 to 8715. [2020-10-14 19:55:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8715 states. [2020-10-14 19:55:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8715 states to 8715 states and 12628 transitions. [2020-10-14 19:55:06,248 INFO L78 Accepts]: Start accepts. Automaton has 8715 states and 12628 transitions. Word has length 997 [2020-10-14 19:55:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:55:06,249 INFO L479 AbstractCegarLoop]: Abstraction has 8715 states and 12628 transitions. [2020-10-14 19:55:06,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:55:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8715 states and 12628 transitions. [2020-10-14 19:55:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-14 19:55:06,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:55:06,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:55:06,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:55:06,291 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:55:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:55:06,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1457249220, now seen corresponding path program 1 times [2020-10-14 19:55:06,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:55:06,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894395996] [2020-10-14 19:55:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:55:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:11,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1027 [2020-10-14 19:55:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:55:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-14 19:55:11,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:11,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:55:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 19:55:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 989 [2020-10-14 19:55:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:12,732 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:55:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:55:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:12,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:12,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:55:12,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:55:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:12,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:55:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:55:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:12,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:12,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:55:12,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:55:12,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:12,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:55:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:55:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:55:13,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894395996] [2020-10-14 19:55:13,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:55:13,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:55:13,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160254238] [2020-10-14 19:55:13,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:55:13,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:55:13,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:55:13,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:55:13,713 INFO L87 Difference]: Start difference. First operand 8715 states and 12628 transitions. Second operand 5 states. [2020-10-14 19:55:14,010 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:55:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:55:29,313 INFO L93 Difference]: Finished difference Result 21658 states and 32470 transitions. [2020-10-14 19:55:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:55:29,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1009 [2020-10-14 19:55:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:55:29,368 INFO L225 Difference]: With dead ends: 21658 [2020-10-14 19:55:29,368 INFO L226 Difference]: Without dead ends: 12949 [2020-10-14 19:55:29,390 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 [2020-10-14 19:55:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12949 states. [2020-10-14 19:55:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12949 to 12863. [2020-10-14 19:55:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12863 states. [2020-10-14 19:55:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12863 states to 12863 states and 18300 transitions. [2020-10-14 19:55:29,741 INFO L78 Accepts]: Start accepts. Automaton has 12863 states and 18300 transitions. Word has length 1009 [2020-10-14 19:55:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:55:29,744 INFO L479 AbstractCegarLoop]: Abstraction has 12863 states and 18300 transitions. [2020-10-14 19:55:29,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:55:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 12863 states and 18300 transitions. [2020-10-14 19:55:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-14 19:55:29,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:55:29,792 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:55:29,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:55:29,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:55:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:55:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 36945715, now seen corresponding path program 1 times [2020-10-14 19:55:29,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:55:29,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340878781] [2020-10-14 19:55:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:55:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:30,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:34,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:34,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-14 19:55:34,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:55:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:55:34,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:34,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:55:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:55:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:55:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:35,226 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:55:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:55:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:35,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:35,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:55:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:55:35,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:35,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:55:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:55:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:55:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:35,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:35,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:55:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:55:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 19:55:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:35,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:35,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:55:35,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:55:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:35,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 19:55:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:55:36,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340878781] [2020-10-14 19:55:36,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:55:36,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:55:36,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411162994] [2020-10-14 19:55:36,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:55:36,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:55:36,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:55:36,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:55:36,050 INFO L87 Difference]: Start difference. First operand 12863 states and 18300 transitions. Second operand 7 states. [2020-10-14 19:55:36,182 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:55:36,942 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:55:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:55:51,974 INFO L93 Difference]: Finished difference Result 38768 states and 57696 transitions. [2020-10-14 19:55:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:55:51,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-14 19:55:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:55:52,103 INFO L225 Difference]: With dead ends: 38768 [2020-10-14 19:55:52,103 INFO L226 Difference]: Without dead ends: 25911 [2020-10-14 19:55:52,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:55:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25911 states. [2020-10-14 19:55:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25911 to 25855. [2020-10-14 19:55:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25855 states. [2020-10-14 19:55:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25855 states to 25855 states and 36714 transitions. [2020-10-14 19:55:52,838 INFO L78 Accepts]: Start accepts. Automaton has 25855 states and 36714 transitions. Word has length 1018 [2020-10-14 19:55:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:55:52,838 INFO L479 AbstractCegarLoop]: Abstraction has 25855 states and 36714 transitions. [2020-10-14 19:55:52,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:55:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 25855 states and 36714 transitions. [2020-10-14 19:55:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-14 19:55:52,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:55:52,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:55:52,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:55:52,951 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:55:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:55:52,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2025552500, now seen corresponding path program 1 times [2020-10-14 19:55:52,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:55:52,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783747854] [2020-10-14 19:55:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:55:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:58,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:58,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1050 [2020-10-14 19:55:58,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:55:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 19:55:58,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:58,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:55:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:55:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 19:55:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:58,457 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:55:58,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:55:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:58,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:55:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:55:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:55:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:55:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:58,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:58,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 19:55:58,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:55:58,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:58,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:55:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:55:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:55:58,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 19:55:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:58,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:58,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:55:58,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:55:58,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:58,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 19:55:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 19:55:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:55:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:55:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:55:58,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:55:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:55:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:55:58,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:55:58,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:55:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:55:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 19:55:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:55:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:55:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 37 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 19:55:59,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783747854] [2020-10-14 19:55:59,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:55:59,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:55:59,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95685689] [2020-10-14 19:55:59,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:55:59,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:55:59,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:55:59,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:55:59,586 INFO L87 Difference]: Start difference. First operand 25855 states and 36714 transitions. Second operand 7 states. [2020-10-14 19:55:59,744 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:56:00,867 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 19:56:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:56:18,379 INFO L93 Difference]: Finished difference Result 75307 states and 115217 transitions. [2020-10-14 19:56:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:56:18,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-14 19:56:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:56:18,607 INFO L225 Difference]: With dead ends: 75307 [2020-10-14 19:56:18,607 INFO L226 Difference]: Without dead ends: 49458 [2020-10-14 19:56:18,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:56:18,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49458 states. [2020-10-14 19:56:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49458 to 49249. [2020-10-14 19:56:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49249 states. [2020-10-14 19:56:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49249 states to 49249 states and 71322 transitions. [2020-10-14 19:56:21,512 INFO L78 Accepts]: Start accepts. Automaton has 49249 states and 71322 transitions. Word has length 1028 [2020-10-14 19:56:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:56:21,513 INFO L479 AbstractCegarLoop]: Abstraction has 49249 states and 71322 transitions. [2020-10-14 19:56:21,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:56:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 49249 states and 71322 transitions. [2020-10-14 19:56:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-14 19:56:21,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:56:21,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:56:21,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:56:21,652 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:56:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:56:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2146042514, now seen corresponding path program 1 times [2020-10-14 19:56:21,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:56:21,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201818180] [2020-10-14 19:56:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:56:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-14 19:56:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:56:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:56:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:27,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:56:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 19:56:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 990 [2020-10-14 19:56:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:28,262 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:56:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:56:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:56:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:56:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:28,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:56:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:56:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:56:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:56:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 19:56:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 19:56:28,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:28,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:56:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 19:56:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:56:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:56:29,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201818180] [2020-10-14 19:56:29,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:56:29,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:56:29,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864872628] [2020-10-14 19:56:29,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:56:29,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:56:29,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:56:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:56:29,283 INFO L87 Difference]: Start difference. First operand 49249 states and 71322 transitions. Second operand 5 states. [2020-10-14 19:56:29,430 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:56:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:56:46,245 INFO L93 Difference]: Finished difference Result 114501 states and 173226 transitions. [2020-10-14 19:56:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:56:46,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1036 [2020-10-14 19:56:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:56:46,588 INFO L225 Difference]: With dead ends: 114501 [2020-10-14 19:56:46,588 INFO L226 Difference]: Without dead ends: 65258 [2020-10-14 19:56:46,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:56:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65258 states. [2020-10-14 19:56:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65258 to 65117. [2020-10-14 19:56:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65117 states. [2020-10-14 19:56:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65117 states to 65117 states and 98823 transitions. [2020-10-14 19:56:48,846 INFO L78 Accepts]: Start accepts. Automaton has 65117 states and 98823 transitions. Word has length 1036 [2020-10-14 19:56:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:56:48,847 INFO L479 AbstractCegarLoop]: Abstraction has 65117 states and 98823 transitions. [2020-10-14 19:56:48,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:56:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 65117 states and 98823 transitions. [2020-10-14 19:56:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-14 19:56:49,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:56:49,023 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-14 19:56:49,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:56:49,023 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:56:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:56:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1613066365, now seen corresponding path program 1 times [2020-10-14 19:56:49,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:56:49,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622708666] [2020-10-14 19:56:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:56:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1065 [2020-10-14 19:56:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:56:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5458 [2020-10-14 19:56:54,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:54,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:56:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 19:56:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 19:56:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:54,885 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:56:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:56:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:54,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:54,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:56:54,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:56:54,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:54,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:56:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:56:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:56:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:55,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:56:55,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:56:55,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:55,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:56:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 19:56:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:56:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:55,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:55,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 19:56:55,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:56:55,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:55,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:56:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:56:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:56:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 19:56:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:56:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:56:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:55,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:56:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:56:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:56:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:55,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:56:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:56:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 19:56:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:56:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:56:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 74 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 19:56:55,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622708666] [2020-10-14 19:56:55,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:56:55,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:56:55,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436905503] [2020-10-14 19:56:55,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:56:55,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:56:55,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:56:55,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:56:55,698 INFO L87 Difference]: Start difference. First operand 65117 states and 98823 transitions. Second operand 7 states. [2020-10-14 19:56:55,939 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:56:56,408 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:57:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:57:14,432 INFO L93 Difference]: Finished difference Result 149823 states and 254605 transitions. [2020-10-14 19:57:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:57:14,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1041 [2020-10-14 19:57:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:57:14,841 INFO L225 Difference]: With dead ends: 149823 [2020-10-14 19:57:14,842 INFO L226 Difference]: Without dead ends: 84712 [2020-10-14 19:57:14,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:57:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84712 states. [2020-10-14 19:57:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84712 to 84037. [2020-10-14 19:57:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84037 states. [2020-10-14 19:57:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84037 states to 84037 states and 131728 transitions. [2020-10-14 19:57:16,986 INFO L78 Accepts]: Start accepts. Automaton has 84037 states and 131728 transitions. Word has length 1041 [2020-10-14 19:57:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:57:16,986 INFO L479 AbstractCegarLoop]: Abstraction has 84037 states and 131728 transitions. [2020-10-14 19:57:16,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:57:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 84037 states and 131728 transitions. [2020-10-14 19:57:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-14 19:57:17,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:57:17,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:57:17,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:57:17,167 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:57:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:57:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1017760360, now seen corresponding path program 1 times [2020-10-14 19:57:17,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:57:17,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639395121] [2020-10-14 19:57:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:57:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking...