/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=0.2 --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/Problem02_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:36,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:36,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:36,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:36,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:36,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:36,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:36,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:36,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:36,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:36,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:36,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:36,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:36,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:36,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:36,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:36,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:36,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:36,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:36,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:36,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:36,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:36,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:36,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:36,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:36,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:36,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:36,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:36,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:36,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:36,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:36,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:36,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:36,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:36,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:36,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:36,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:36,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:36,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:36,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:36,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:36,387 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 11:15:36,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:36,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:36,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:36,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:36,439 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:36,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:36,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:36,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:36,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:36,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:36,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:36,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:36,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:36,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:36,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:36,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:36,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:36,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:36,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:36,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:36,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:36,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:36,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:36,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:36,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:36,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:36,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:36,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:36,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:36,445 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:15:36,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:36,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:36,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:36,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:36,934 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:36,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 11:15:37,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0e73dd5d/e751cd423ee2435ba51db4993bbe6ce0/FLAG407674eeb [2020-09-25 11:15:37,691 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:37,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 11:15:37,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0e73dd5d/e751cd423ee2435ba51db4993bbe6ce0/FLAG407674eeb [2020-09-25 11:15:37,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0e73dd5d/e751cd423ee2435ba51db4993bbe6ce0 [2020-09-25 11:15:37,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:37,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:37,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:37,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:37,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:37,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:37" (1/1) ... [2020-09-25 11:15:37,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:37, skipping insertion in model container [2020-09-25 11:15:37,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:37" (1/1) ... [2020-09-25 11:15:37,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:37,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:38,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:38,431 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:38,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:38,687 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:38,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38 WrapperNode [2020-09-25 11:15:38,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:38,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:38,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:38,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:38,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (1/1) ... [2020-09-25 11:15:38,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:38,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:38,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:38,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:38,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (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 11:15:38,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:38,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:38,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:38,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:38,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:38,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:40,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:40,190 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:40,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:40 BoogieIcfgContainer [2020-09-25 11:15:40,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:40,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:40,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:40,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:40,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:37" (1/3) ... [2020-09-25 11:15:40,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:40, skipping insertion in model container [2020-09-25 11:15:40,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:38" (2/3) ... [2020-09-25 11:15:40,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:40, skipping insertion in model container [2020-09-25 11:15:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:40" (3/3) ... [2020-09-25 11:15:40,210 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-25 11:15:40,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:40,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:40,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:40,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:40,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:40,294 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:40,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:40,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:40,295 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:40,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:40,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 11:15:40,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:40,355 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] [2020-09-25 11:15:40,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:40,364 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-25 11:15:40,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:40,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 11:15:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 11:15:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:15:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:15:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:45,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:15:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:15:45,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:15:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:45,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:45,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:15:45,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:45,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:45,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:45,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:45,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:15:45,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:46,026 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 11:15:46,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 11:15:46,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:46,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:15:46,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870799031] [2020-09-25 11:15:46,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:15:46,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:15:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:15:46,057 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:15:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:48,110 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:15:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:48,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-09-25 11:15:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:48,137 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:15:48,137 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:15:48,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:15:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:15:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:15:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:15:48,251 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 134 [2020-09-25 11:15:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:48,253 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:15:48,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:15:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:15:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 11:15:48,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:48,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:48,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:48,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:48,272 INFO L82 PathProgramCache]: Analyzing trace with hash -916548164, now seen corresponding path program 1 times [2020-09-25 11:15:48,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:48,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254345117] [2020-09-25 11:15:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 11:15:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:15:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:15:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:15:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:15:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:15:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:53,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:15:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:53,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:15:53,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 11:15:53,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:53,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:15:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:54,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254345117] [2020-09-25 11:15:54,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:54,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:15:54,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148025108] [2020-09-25 11:15:54,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:15:54,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:54,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:15:54,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:15:54,102 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 11:15:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:57,301 INFO L93 Difference]: Finished difference Result 1925 states and 2547 transitions. [2020-09-25 11:15:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:15:57,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-09-25 11:15:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:57,307 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 11:15:57,307 INFO L226 Difference]: Without dead ends: 729 [2020-09-25 11:15:57,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:15:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-09-25 11:15:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 716. [2020-09-25 11:15:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-09-25 11:15:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 838 transitions. [2020-09-25 11:15:57,342 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 838 transitions. Word has length 168 [2020-09-25 11:15:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:57,343 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 838 transitions. [2020-09-25 11:15:57,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:15:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 838 transitions. [2020-09-25 11:15:57,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:15:57,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:57,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:57,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:57,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:57,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1540677436, now seen corresponding path program 1 times [2020-09-25 11:15:57,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:57,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767841314] [2020-09-25 11:15:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:02,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:16:02,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-09-25 11:16:02,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:02,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:16:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:16:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:03,034 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-09-25 11:16:03,169 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-09-25 11:16:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:03,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:03,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:16:03,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:03,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:16:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:03,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:16:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 11:16:03,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:03,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:16:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:04,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767841314] [2020-09-25 11:16:04,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:04,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:16:04,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760820737] [2020-09-25 11:16:04,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:16:04,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:04,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:16:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:16:04,010 INFO L87 Difference]: Start difference. First operand 716 states and 838 transitions. Second operand 16 states. [2020-09-25 11:16:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:06,945 INFO L93 Difference]: Finished difference Result 1352 states and 1607 transitions. [2020-09-25 11:16:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:16:06,946 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 169 [2020-09-25 11:16:06,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:06,950 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 11:16:06,950 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 11:16:06,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:16:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 11:16:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 11:16:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 11:16:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 11:16:06,972 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 169 [2020-09-25 11:16:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:06,972 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 11:16:06,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:16:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 11:16:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 11:16:06,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:06,976 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, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:16:06,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:16:06,977 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash -452213321, now seen corresponding path program 1 times [2020-09-25 11:16:06,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:06,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666035225] [2020-09-25 11:16:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:11,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 11:16:12,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:16:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:16:12,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:16:12,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 11:16:12,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:16:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:12,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:16:12,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:16:12,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:16:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:16:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:12,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:16:12,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 11:16:12,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:16:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:16:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 11:16:13,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666035225] [2020-09-25 11:16:13,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:13,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:16:13,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111974621] [2020-09-25 11:16:13,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:16:13,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:13,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:16:13,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:16:13,026 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 11:16:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:15,427 INFO L93 Difference]: Finished difference Result 1533 states and 1687 transitions. [2020-09-25 11:16:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:16:15,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 11:16:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:15,436 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 11:16:15,436 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 11:16:15,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:16:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 11:16:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 11:16:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 11:16:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 11:16:15,477 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 212 [2020-09-25 11:16:15,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:15,478 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 11:16:15,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:16:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 11:16:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 11:16:15,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:15,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:15,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:16:15,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:15,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1234844570, now seen corresponding path program 1 times [2020-09-25 11:16:15,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:15,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643361007] [2020-09-25 11:16:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 11:16:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:16:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:20,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:16:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 11:16:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:16:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:20,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:20,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:20,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:16:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:20,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:16:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 11:16:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:21,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:21,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:16:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 11:16:21,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:21,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:16:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:16:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:21,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643361007] [2020-09-25 11:16:21,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:21,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:16:21,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423445134] [2020-09-25 11:16:21,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:16:21,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:21,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:16:21,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:16:21,537 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 11 states. [2020-09-25 11:16:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:24,480 INFO L93 Difference]: Finished difference Result 1972 states and 2209 transitions. [2020-09-25 11:16:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:16:24,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-09-25 11:16:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:24,482 INFO L225 Difference]: With dead ends: 1972 [2020-09-25 11:16:24,482 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:16:24,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:16:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:16:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:16:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:16:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:16:24,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2020-09-25 11:16:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:24,488 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:16:24,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:16:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:16:24,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:16:24,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:16:24,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:16:25,050 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 40 [2020-09-25 11:16:25,173 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 40 [2020-09-25 11:16:25,862 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 67