/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:10:27,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:10:27,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:10:27,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:10:27,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:10:27,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:10:27,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:10:27,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:10:27,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:10:27,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:10:27,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:10:27,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:10:27,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:10:27,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:10:27,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:10:27,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:10:27,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:10:27,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:10:27,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:10:27,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:10:27,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:10:27,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:10:27,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:10:27,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:10:27,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:10:27,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:10:27,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:10:27,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:10:27,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:10:27,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:10:27,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:10:27,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:10:27,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:10:27,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:10:27,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:10:27,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:10:27,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:10:27,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:10:27,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:10:27,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:10:27,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:10:27,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 07:10:27,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:10:27,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:10:27,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:10:27,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:10:27,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:10:27,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:10:27,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:10:27,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:10:28,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:10:28,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:10:28,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:10:28,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:10:28,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:10:28,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:10:28,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:10:28,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:10:28,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:10:28,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:10:28,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:10:28,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:10:28,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:10:28,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:10:28,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:10:28,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:10:28,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:10:28,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:10:28,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:10:28,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:10:28,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:10:28,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:10:28,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:10:28,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:10:28,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:10:28,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:10:28,326 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:10:28,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label41.c [2020-10-13 07:10:28,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb1ea0f37/235031df653a44f4a03bfb4ac6123fbc/FLAG07f22dea2 [2020-10-13 07:10:29,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:10:29,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label41.c [2020-10-13 07:10:29,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb1ea0f37/235031df653a44f4a03bfb4ac6123fbc/FLAG07f22dea2 [2020-10-13 07:10:29,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb1ea0f37/235031df653a44f4a03bfb4ac6123fbc [2020-10-13 07:10:29,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:10:29,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:10:29,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:29,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:10:29,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:10:29,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:29" (1/1) ... [2020-10-13 07:10:29,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55571c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:29, skipping insertion in model container [2020-10-13 07:10:29,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:29" (1/1) ... [2020-10-13 07:10:29,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:10:29,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:10:32,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:32,431 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:10:33,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:10:33,572 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:10:33,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33 WrapperNode [2020-10-13 07:10:33,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:10:33,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:10:33,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:10:33,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:10:33,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:33,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:33,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:33,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:33,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:33,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:33,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... [2020-10-13 07:10:34,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:10:34,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:10:34,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:10:34,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:10:34,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:10:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:10:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:10:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:10:34,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:10:34,105 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:10:34,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:10:34,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:10:34,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:10:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:10:34,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:10:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:10:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:10:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:10:34,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:10:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:10:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:10:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:10:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:10:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:10:41,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:10:41,608 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:10:41,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:41 BoogieIcfgContainer [2020-10-13 07:10:41,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:10:41,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:10:41,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:10:41,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:10:41,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:10:29" (1/3) ... [2020-10-13 07:10:41,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af36e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:41, skipping insertion in model container [2020-10-13 07:10:41,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:33" (2/3) ... [2020-10-13 07:10:41,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af36e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:41, skipping insertion in model container [2020-10-13 07:10:41,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:41" (3/3) ... [2020-10-13 07:10:41,631 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label41.c [2020-10-13 07:10:41,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:10:41,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:10:41,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:10:41,695 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:10:41,696 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:10:41,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:10:41,696 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:10:41,696 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:10:41,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:10:41,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:10:41,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:10:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:10:41,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-13 07:10:41,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:10:41,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:10:41,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:10:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:10:41,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1779732215, now seen corresponding path program 1 times [2020-10-13 07:10:41,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:10:41,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62611975] [2020-10-13 07:10:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:10:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:48,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:48,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-13 07:10:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:10:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5339 [2020-10-13 07:10:48,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:10:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:10:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:10:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:10:51,097 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:10:51,341 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:10:51,571 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:10:51,788 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-13 07:10:52,009 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-13 07:10:52,229 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-13 07:10:52,454 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-13 07:10:52,624 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-13 07:10:52,812 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-13 07:10:52,986 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-13 07:10:53,715 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:10:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:10:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:10:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:10:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:10:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:10:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:10:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 07:10:53,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:10:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:10:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:10:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:10:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:11:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:11:04,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62611975] [2020-10-13 07:11:04,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:11:04,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:11:04,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913971963] [2020-10-13 07:11:04,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:11:04,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:11:04,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:11:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:11:04,277 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:11:04,691 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:11:05,398 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 07:11:06,118 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 07:11:06,884 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-13 07:11:10,562 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 173 [2020-10-13 07:11:13,801 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 172 [2020-10-13 07:11:16,094 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-13 07:11:16,774 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2020-10-13 07:11:17,754 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-13 07:11:26,513 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2020-10-13 07:11:27,175 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 07:11:29,835 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-13 07:11:36,595 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 159 [2020-10-13 07:11:37,272 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 163 [2020-10-13 07:11:39,540 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-13 07:11:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:11:51,161 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:11:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:11:51,163 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1000 [2020-10-13 07:11:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:11:51,203 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:11:51,204 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:11:51,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:11:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:11:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:11:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:11:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:11:51,370 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 1000 [2020-10-13 07:11:51,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:11:51,373 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:11:51,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:11:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:11:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2020-10-13 07:11:51,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:11:51,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:11:51,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:11:51,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:11:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:11:51,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1051993142, now seen corresponding path program 1 times [2020-10-13 07:11:51,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:11:51,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263500360] [2020-10-13 07:11:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:11:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1088 [2020-10-13 07:11:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:11:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-13 07:11:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:11:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:11:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:11:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:11:57,774 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:11:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:11:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:57,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:11:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 07:11:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:11:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:11:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:11:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:11:57,942 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 07:11:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:11:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:11:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:11:58,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:11:58,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:11:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:11:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 07:11:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:11:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:11:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:11:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:11:58,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:11:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:11:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263500360] [2020-10-13 07:11:59,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:11:59,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:11:59,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174301360] [2020-10-13 07:11:59,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:11:59,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:11:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:11:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:11:59,142 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:11:59,322 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:12:00,620 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 07:12:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:12:20,993 INFO L93 Difference]: Finished difference Result 4486 states and 7525 transitions. [2020-10-13 07:12:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:12:20,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1070 [2020-10-13 07:12:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:12:21,015 INFO L225 Difference]: With dead ends: 4486 [2020-10-13 07:12:21,015 INFO L226 Difference]: Without dead ends: 3227 [2020-10-13 07:12:21,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:12:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-10-13 07:12:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3147. [2020-10-13 07:12:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3147 states. [2020-10-13 07:12:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4653 transitions. [2020-10-13 07:12:21,119 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4653 transitions. Word has length 1070 [2020-10-13 07:12:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:12:21,120 INFO L479 AbstractCegarLoop]: Abstraction has 3147 states and 4653 transitions. [2020-10-13 07:12:21,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:12:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4653 transitions. [2020-10-13 07:12:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-13 07:12:21,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:12:21,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:12:21,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:12:21,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:12:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:12:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash 117309709, now seen corresponding path program 1 times [2020-10-13 07:12:21,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:12:21,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027512819] [2020-10-13 07:12:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:12:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1140 [2020-10-13 07:12:26,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:12:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-13 07:12:26,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:12:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:12:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:12:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:28,088 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:12:28,263 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:12:28,463 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 07:12:28,619 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-13 07:12:29,313 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:12:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:12:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:29,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:12:29,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 07:12:29,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:12:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:12:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:12:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:12:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:12:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:12:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:12:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:12:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:12:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-13 07:12:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:12:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:12:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:12:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:12:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:12:30,346 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-13 07:12:30,593 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2020-10-13 07:12:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:12:39,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027512819] [2020-10-13 07:12:39,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:12:39,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:12:39,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333532586] [2020-10-13 07:12:39,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:12:39,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:12:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:12:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:12:39,327 INFO L87 Difference]: Start difference. First operand 3147 states and 4653 transitions. Second operand 18 states. [2020-10-13 07:12:39,603 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:12:41,675 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-10-13 07:12:41,975 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-13 07:12:42,646 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-13 07:12:43,375 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176 [2020-10-13 07:12:44,592 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2020-10-13 07:12:47,832 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 190 DAG size of output: 174 [2020-10-13 07:12:57,159 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-13 07:12:57,907 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 170 [2020-10-13 07:12:59,314 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-10-13 07:13:08,558 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 168 [2020-10-13 07:13:09,697 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 166 [2020-10-13 07:13:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:13:33,656 INFO L93 Difference]: Finished difference Result 8411 states and 13362 transitions. [2020-10-13 07:13:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:13:33,659 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1122 [2020-10-13 07:13:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:13:33,697 INFO L225 Difference]: With dead ends: 8411 [2020-10-13 07:13:33,697 INFO L226 Difference]: Without dead ends: 6024 [2020-10-13 07:13:33,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2020-10-13 07:13:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2020-10-13 07:13:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 5936. [2020-10-13 07:13:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5936 states. [2020-10-13 07:13:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 8860 transitions. [2020-10-13 07:13:33,900 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 8860 transitions. Word has length 1122 [2020-10-13 07:13:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:13:33,901 INFO L479 AbstractCegarLoop]: Abstraction has 5936 states and 8860 transitions. [2020-10-13 07:13:33,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:13:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 8860 transitions. [2020-10-13 07:13:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2020-10-13 07:13:33,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:13:33,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:13:33,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:13:33,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:13:33,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:13:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1134320698, now seen corresponding path program 1 times [2020-10-13 07:13:33,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:13:33,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584694964] [2020-10-13 07:13:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:13:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:39,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:39,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1167 [2020-10-13 07:13:39,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:13:39,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 07:13:39,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:13:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:13:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1007 [2020-10-13 07:13:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:40,164 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:13:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:13:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:40,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:40,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:13:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:13:40,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:13:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:13:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:13:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:40,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:13:40,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 07:13:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:13:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:13:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:13:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:13:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:13:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:13:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:13:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 07:13:40,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:13:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:13:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:13:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:13:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:13:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 07:13:41,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584694964] [2020-10-13 07:13:41,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:13:41,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 07:13:41,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039351539] [2020-10-13 07:13:41,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 07:13:41,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:13:41,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 07:13:41,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 07:13:41,406 INFO L87 Difference]: Start difference. First operand 5936 states and 8860 transitions. Second operand 5 states. [2020-10-13 07:13:42,207 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:13:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:13:58,405 INFO L93 Difference]: Finished difference Result 15485 states and 24320 transitions. [2020-10-13 07:13:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 07:13:58,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1147 [2020-10-13 07:13:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:13:58,463 INFO L225 Difference]: With dead ends: 15485 [2020-10-13 07:13:58,464 INFO L226 Difference]: Without dead ends: 10309 [2020-10-13 07:13:58,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 07:13:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10309 states. [2020-10-13 07:13:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10309 to 10188. [2020-10-13 07:13:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10188 states. [2020-10-13 07:13:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10188 states to 10188 states and 14972 transitions. [2020-10-13 07:13:58,799 INFO L78 Accepts]: Start accepts. Automaton has 10188 states and 14972 transitions. Word has length 1147 [2020-10-13 07:13:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:13:58,802 INFO L479 AbstractCegarLoop]: Abstraction has 10188 states and 14972 transitions. [2020-10-13 07:13:58,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 07:13:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 10188 states and 14972 transitions. [2020-10-13 07:13:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2020-10-13 07:13:58,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:13:58,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:13:58,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:13:58,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:13:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:13:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash 793785949, now seen corresponding path program 1 times [2020-10-13 07:13:58,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:13:58,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110634252] [2020-10-13 07:13:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:13:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:13:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:00,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:04,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:04,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1181 [2020-10-13 07:14:04,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:14:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 07:14:04,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:14:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:14:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 07:14:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:04,584 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:14:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:14:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:04,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:14:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:14:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 07:14:04,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:14:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:14:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:14:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:14:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:04,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:04,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:14:04,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:14:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 07:14:04,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:04,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:14:04,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:14:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:14:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:14:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:04,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:14:04,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:14:04,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 07:14:04,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:14:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:14:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:14:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 07:14:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:04,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:14:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 07:14:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 07:14:05,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110634252] [2020-10-13 07:14:05,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:14:05,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:14:05,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100588144] [2020-10-13 07:14:05,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:14:05,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:14:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:14:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:14:05,521 INFO L87 Difference]: Start difference. First operand 10188 states and 14972 transitions. Second operand 7 states. [2020-10-13 07:14:06,489 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:14:07,039 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 132