/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:48,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:48,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:48,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:48,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:48,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:48,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:48,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:48,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:48,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:48,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:48,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:48,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:48,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:48,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:48,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:48,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:48,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:48,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:48,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:48,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:48,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:48,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:48,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:48,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:48,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:48,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:48,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:48,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:48,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:48,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:48,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:48,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:48,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:48,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:48,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:48,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:48,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:48,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:48,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:48,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:48,770 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 09:03:48,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:48,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:48,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:48,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:48,820 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:48,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:48,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:48,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:48,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:48,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:48,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:48,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:48,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:48,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:48,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:48,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:48,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:48,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:48,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:48,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:48,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:48,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:48,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:48,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:48,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:48,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:48,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:48,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:48,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:48,828 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:03:49,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:49,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:49,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:49,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:49,357 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:49,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 09:03:49,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/734cffb61/11c8a7516e774e069d50df8576c9fbfe/FLAG37955e3b3 [2020-09-25 09:03:50,047 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:50,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 09:03:50,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/734cffb61/11c8a7516e774e069d50df8576c9fbfe/FLAG37955e3b3 [2020-09-25 09:03:50,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/734cffb61/11c8a7516e774e069d50df8576c9fbfe [2020-09-25 09:03:50,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:50,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:50,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:50,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:50,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:50,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:50" (1/1) ... [2020-09-25 09:03:50,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ed117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:50, skipping insertion in model container [2020-09-25 09:03:50,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:50" (1/1) ... [2020-09-25 09:03:50,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:50,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:50,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:50,981 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:51,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:51,099 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:51,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51 WrapperNode [2020-09-25 09:03:51,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:51,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:51,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:51,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:51,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (1/1) ... [2020-09-25 09:03:51,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:51,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:51,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:51,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:51,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (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 09:03:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:53,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:53,072 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:53,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:53 BoogieIcfgContainer [2020-09-25 09:03:53,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:53,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:53,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:53,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:53,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:50" (1/3) ... [2020-09-25 09:03:53,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eca5565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:53, skipping insertion in model container [2020-09-25 09:03:53,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:51" (2/3) ... [2020-09-25 09:03:53,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eca5565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:53, skipping insertion in model container [2020-09-25 09:03:53,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:53" (3/3) ... [2020-09-25 09:03:53,092 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-09-25 09:03:53,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:53,115 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:53,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:53,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:53,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:53,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:53,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:53,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:53,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:53,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:53,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 09:03:53,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:53,227 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] [2020-09-25 09:03:53,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1682076970, now seen corresponding path program 1 times [2020-09-25 09:03:53,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:53,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085589601] [2020-09-25 09:03:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:03:58,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:03:58,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:03:58,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:58,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:03:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:03:58,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:03:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:58,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:58,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:58,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:03:58,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:58,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:58,860 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 09:03:58,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085589601] [2020-09-25 09:03:58,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:58,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:58,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145793882] [2020-09-25 09:03:58,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:58,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:58,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:58,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:58,893 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:01,572 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 09:04:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:01,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 09:04:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:01,624 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 09:04:01,624 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 09:04:01,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:01,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 09:04:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 09:04:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 09:04:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 09:04:01,760 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 133 [2020-09-25 09:04:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:01,761 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 09:04:01,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 09:04:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 09:04:01,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:01,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:01,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:01,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1624674134, now seen corresponding path program 1 times [2020-09-25 09:04:01,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:01,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954616703] [2020-09-25 09:04:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:06,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 09:04:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:04:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:06,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 09:04:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:04:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:06,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:06,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:06,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:06,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:06,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:06,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:07,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:07,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:07,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:04:07,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:07,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:04:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:07,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954616703] [2020-09-25 09:04:07,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:07,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:07,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196674501] [2020-09-25 09:04:07,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:07,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:07,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:07,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:07,080 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 09:04:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:09,003 INFO L93 Difference]: Finished difference Result 1624 states and 2084 transitions. [2020-09-25 09:04:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:09,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 09:04:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:09,018 INFO L225 Difference]: With dead ends: 1624 [2020-09-25 09:04:09,018 INFO L226 Difference]: Without dead ends: 981 [2020-09-25 09:04:09,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-25 09:04:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-25 09:04:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 09:04:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1223 transitions. [2020-09-25 09:04:09,072 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1223 transitions. Word has length 151 [2020-09-25 09:04:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:09,073 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1223 transitions. [2020-09-25 09:04:09,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1223 transitions. [2020-09-25 09:04:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 09:04:09,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:09,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:09,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:09,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:09,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2099256184, now seen corresponding path program 1 times [2020-09-25 09:04:09,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:09,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467489685] [2020-09-25 09:04:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 09:04:14,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:04:14,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 09:04:14,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:14,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:14,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:04:14,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:14,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 09:04:14,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:14,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:04:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:14,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467489685] [2020-09-25 09:04:14,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:14,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:14,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440863465] [2020-09-25 09:04:14,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:14,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:14,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:14,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:14,561 INFO L87 Difference]: Start difference. First operand 969 states and 1223 transitions. Second operand 6 states. [2020-09-25 09:04:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:16,859 INFO L93 Difference]: Finished difference Result 2733 states and 3560 transitions. [2020-09-25 09:04:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:16,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-09-25 09:04:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:16,871 INFO L225 Difference]: With dead ends: 2733 [2020-09-25 09:04:16,872 INFO L226 Difference]: Without dead ends: 1786 [2020-09-25 09:04:16,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-09-25 09:04:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1725. [2020-09-25 09:04:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-25 09:04:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2206 transitions. [2020-09-25 09:04:16,967 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2206 transitions. Word has length 155 [2020-09-25 09:04:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:16,968 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2206 transitions. [2020-09-25 09:04:16,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2206 transitions. [2020-09-25 09:04:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 09:04:16,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:16,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:16,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:16,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1984167013, now seen corresponding path program 1 times [2020-09-25 09:04:16,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:16,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230300729] [2020-09-25 09:04:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 09:04:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:04:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:04:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:04:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:22,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:04:22,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:04:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:04:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:22,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:04:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:04:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:04:22,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230300729] [2020-09-25 09:04:22,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:22,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:22,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129765397] [2020-09-25 09:04:22,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:22,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:22,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:22,349 INFO L87 Difference]: Start difference. First operand 1725 states and 2206 transitions. Second operand 8 states. [2020-09-25 09:04:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:25,573 INFO L93 Difference]: Finished difference Result 4151 states and 5428 transitions. [2020-09-25 09:04:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:04:25,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-09-25 09:04:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:25,587 INFO L225 Difference]: With dead ends: 4151 [2020-09-25 09:04:25,587 INFO L226 Difference]: Without dead ends: 2448 [2020-09-25 09:04:25,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:04:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2020-09-25 09:04:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2375. [2020-09-25 09:04:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-09-25 09:04:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 2861 transitions. [2020-09-25 09:04:25,675 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 2861 transitions. Word has length 168 [2020-09-25 09:04:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:25,675 INFO L479 AbstractCegarLoop]: Abstraction has 2375 states and 2861 transitions. [2020-09-25 09:04:25,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 2861 transitions. [2020-09-25 09:04:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:04:25,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:25,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:25,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:25,685 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:25,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1086931591, now seen corresponding path program 1 times [2020-09-25 09:04:25,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:25,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161414005] [2020-09-25 09:04:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:04:30,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:04:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:30,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 09:04:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:04:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:04:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:30,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:30,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 09:04:30,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:04:30,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:30,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:04:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:31,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161414005] [2020-09-25 09:04:31,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:31,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:31,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979313214] [2020-09-25 09:04:31,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:31,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:31,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:31,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:31,059 INFO L87 Difference]: Start difference. First operand 2375 states and 2861 transitions. Second operand 6 states. [2020-09-25 09:04:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:33,216 INFO L93 Difference]: Finished difference Result 5382 states and 6591 transitions. [2020-09-25 09:04:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:33,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-09-25 09:04:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:33,233 INFO L225 Difference]: With dead ends: 5382 [2020-09-25 09:04:33,233 INFO L226 Difference]: Without dead ends: 3029 [2020-09-25 09:04:33,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2020-09-25 09:04:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2991. [2020-09-25 09:04:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2991 states. [2020-09-25 09:04:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 3642 transitions. [2020-09-25 09:04:33,328 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 3642 transitions. Word has length 175 [2020-09-25 09:04:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:33,329 INFO L479 AbstractCegarLoop]: Abstraction has 2991 states and 3642 transitions. [2020-09-25 09:04:33,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 3642 transitions. [2020-09-25 09:04:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 09:04:33,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:33,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:33,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:33,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:33,341 INFO L82 PathProgramCache]: Analyzing trace with hash 366175657, now seen corresponding path program 1 times [2020-09-25 09:04:33,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:33,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052058699] [2020-09-25 09:04:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:33,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking...