/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 SingleStatement --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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:13,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:13,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:13,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:13,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:13,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:13,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:13,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:13,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:13,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:13,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:13,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:13,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:13,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:13,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:13,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:13,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:13,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:13,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:13,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:13,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:13,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:13,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:13,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:13,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:13,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:13,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:13,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:13,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:13,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:13,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:13,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:13,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:13,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:13,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:13,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:13,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:13,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:13,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:13,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:13,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:13,753 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 [2020-09-25 14:43:13,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:13,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:13,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:13,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:13,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:13,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:13,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:13,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:13,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:13,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:13,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:13,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:13,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:13,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:13,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:13,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:13,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:13,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:13,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:13,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:13,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:13,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:13,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:13,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:13,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:13,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:13,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:13,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:13,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:13,810 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 -> SingleStatement 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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=true; [2020-09-25 14:43:14,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:14,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:14,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:14,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:14,279 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:14,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 14:43:14,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e9d0e272/8d1e3f0f2c9c4f7aa7973bf8f0d51528/FLAG26ee71d63 [2020-09-25 14:43:15,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:15,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 14:43:15,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e9d0e272/8d1e3f0f2c9c4f7aa7973bf8f0d51528/FLAG26ee71d63 [2020-09-25 14:43:15,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e9d0e272/8d1e3f0f2c9c4f7aa7973bf8f0d51528 [2020-09-25 14:43:15,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:15,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:15,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:15,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:15,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:15,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:15, skipping insertion in model container [2020-09-25 14:43:15,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:15" (1/1) ... [2020-09-25 14:43:15,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:15,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:16,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:16,113 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:16,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:16,349 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:16,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16 WrapperNode [2020-09-25 14:43:16,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:16,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:16,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:16,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:16,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (1/1) ... [2020-09-25 14:43:16,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:16,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:16,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:16,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:16,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (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 [2020-09-25 14:43:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:16,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:16,632 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:16,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:16,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:16,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:19,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:19,085 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:19,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:19 BoogieIcfgContainer [2020-09-25 14:43:19,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:19,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:19,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:19,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:19,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:15" (1/3) ... [2020-09-25 14:43:19,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daf7063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:19, skipping insertion in model container [2020-09-25 14:43:19,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:16" (2/3) ... [2020-09-25 14:43:19,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daf7063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:19, skipping insertion in model container [2020-09-25 14:43:19,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:19" (3/3) ... [2020-09-25 14:43:19,122 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 14:43:19,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:19,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:19,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:19,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:19,206 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:19,206 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:19,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:19,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:19,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:19,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:19,207 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 14:43:19,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 14:43:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:19,256 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] [2020-09-25 14:43:19,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:19,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 14:43:19,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:19,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181928973] [2020-09-25 14:43:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:20,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:43:20,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-09-25 14:43:20,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:20,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:43:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:43:20,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:43:20,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:20,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:20,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:43:20,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:20,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:43:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:20,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181928973] [2020-09-25 14:43:20,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:20,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:43:20,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732777775] [2020-09-25 14:43:20,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:20,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:20,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:20,375 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 14:43:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:25,817 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-25 14:43:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:43:25,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 14:43:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:25,851 INFO L225 Difference]: With dead ends: 2361 [2020-09-25 14:43:25,851 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 14:43:25,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 14:43:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-25 14:43:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-25 14:43:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-25 14:43:26,005 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 39 [2020-09-25 14:43:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:26,006 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-25 14:43:26,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-25 14:43:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 14:43:26,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:26,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:26,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:26,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:26,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1767258319, now seen corresponding path program 1 times [2020-09-25 14:43:26,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:26,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58585438] [2020-09-25 14:43:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:43:29,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3277 [2020-09-25 14:43:29,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:43:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:43:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:43:29,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 14:43:29,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:43:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:29,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58585438] [2020-09-25 14:43:29,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:29,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:29,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652817783] [2020-09-25 14:43:29,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:29,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:29,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:29,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:29,997 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 7 states. [2020-09-25 14:43:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:34,916 INFO L93 Difference]: Finished difference Result 3121 states and 4257 transitions. [2020-09-25 14:43:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:34,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 14:43:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:34,997 INFO L225 Difference]: With dead ends: 3121 [2020-09-25 14:43:34,998 INFO L226 Difference]: Without dead ends: 1983 [2020-09-25 14:43:35,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-09-25 14:43:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1823. [2020-09-25 14:43:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-25 14:43:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2294 transitions. [2020-09-25 14:43:35,105 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2294 transitions. Word has length 120 [2020-09-25 14:43:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:35,107 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2294 transitions. [2020-09-25 14:43:35,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2294 transitions. [2020-09-25 14:43:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 14:43:35,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:35,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:35,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:35,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722232, now seen corresponding path program 1 times [2020-09-25 14:43:35,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:35,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258689392] [2020-09-25 14:43:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:38,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 14:43:38,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3258 [2020-09-25 14:43:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:38,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 14:43:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:38,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:38,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:43:38,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:38,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:38,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 14:43:38,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:38,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:38,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:38,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:38,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:38,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:38,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258689392] [2020-09-25 14:43:38,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:38,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872410293] [2020-09-25 14:43:38,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:38,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:38,932 INFO L87 Difference]: Start difference. First operand 1823 states and 2294 transitions. Second operand 7 states. [2020-09-25 14:43:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:42,865 INFO L93 Difference]: Finished difference Result 4767 states and 6237 transitions. [2020-09-25 14:43:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:42,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 14:43:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:42,882 INFO L225 Difference]: With dead ends: 4767 [2020-09-25 14:43:42,882 INFO L226 Difference]: Without dead ends: 2961 [2020-09-25 14:43:42,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-09-25 14:43:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2883. [2020-09-25 14:43:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-09-25 14:43:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3579 transitions. [2020-09-25 14:43:42,980 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3579 transitions. Word has length 128 [2020-09-25 14:43:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:42,981 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 3579 transitions. [2020-09-25 14:43:42,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3579 transitions. [2020-09-25 14:43:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 14:43:42,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:42,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:42,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:42,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:42,985 INFO L82 PathProgramCache]: Analyzing trace with hash 868228625, now seen corresponding path program 1 times [2020-09-25 14:43:42,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:42,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731170862] [2020-09-25 14:43:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:43:48,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:43:48,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:48,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:43:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:43:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:48,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:43:48,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:48,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:43:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 14:43:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:48,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731170862] [2020-09-25 14:43:48,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:48,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:48,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411234451] [2020-09-25 14:43:48,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:48,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:48,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:48,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:48,579 INFO L87 Difference]: Start difference. First operand 2883 states and 3579 transitions. Second operand 7 states. [2020-09-25 14:43:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:54,078 INFO L93 Difference]: Finished difference Result 5630 states and 7151 transitions. [2020-09-25 14:43:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:54,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 14:43:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:54,097 INFO L225 Difference]: With dead ends: 5630 [2020-09-25 14:43:54,097 INFO L226 Difference]: Without dead ends: 3829 [2020-09-25 14:43:54,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2020-09-25 14:43:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3570. [2020-09-25 14:43:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3570 states. [2020-09-25 14:43:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4457 transitions. [2020-09-25 14:43:54,223 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4457 transitions. Word has length 160 [2020-09-25 14:43:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:54,225 INFO L479 AbstractCegarLoop]: Abstraction has 3570 states and 4457 transitions. [2020-09-25 14:43:54,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4457 transitions. [2020-09-25 14:43:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 14:43:54,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:54,233 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:54,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:54,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:54,234 INFO L82 PathProgramCache]: Analyzing trace with hash 283082810, now seen corresponding path program 1 times [2020-09-25 14:43:54,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:54,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458931821] [2020-09-25 14:43:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:55,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:59,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 14:43:59,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:43:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:59,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:43:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-09-25 14:43:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:59,530 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-09-25 14:43:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:59,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:43:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:43:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:59,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:43:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:59,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 14:43:59,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 14:43:59,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:59,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 14:43:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 14:44:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:00,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:44:00,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:44:00,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 14:44:00,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:00,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:44:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:44:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 107 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 14:44:00,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458931821] [2020-09-25 14:44:00,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:00,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:44:00,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344675379] [2020-09-25 14:44:00,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:44:00,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:44:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:44:00,367 INFO L87 Difference]: Start difference. First operand 3570 states and 4457 transitions. Second operand 9 states.