/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=0.6 --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/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:53,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:53,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:53,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:53,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:53,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:53,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:53,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:53,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:53,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:53,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:53,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:53,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:53,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:53,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:53,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:53,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:53,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:53,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:53,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:53,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:53,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:53,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:53,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:53,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:53,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:53,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:53,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:53,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:53,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:53,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:53,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:53,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:53,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:53,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:53,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:53,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:53,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:53,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:53,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:53,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:53,765 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 06:48:53,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:53,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:53,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:53,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:53,819 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:53,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:53,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:53,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:53,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:53,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:53,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:53,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:53,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:53,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:53,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:53,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:53,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:53,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:53,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:53,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:53,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:53,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:53,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:53,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:53,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:53,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:53,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:53,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:53,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:53,826 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:48:54,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:54,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:54,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:54,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:54,302 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:54,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 06:48:54,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b86e44a1b/ab71fd0315914db28ed7a6b8a3632830/FLAG199beb22b [2020-09-25 06:48:55,058 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:55,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 06:48:55,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b86e44a1b/ab71fd0315914db28ed7a6b8a3632830/FLAG199beb22b [2020-09-25 06:48:55,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b86e44a1b/ab71fd0315914db28ed7a6b8a3632830 [2020-09-25 06:48:55,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:55,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:55,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:55,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:55,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:55,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:55" (1/1) ... [2020-09-25 06:48:55,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:55, skipping insertion in model container [2020-09-25 06:48:55,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:55" (1/1) ... [2020-09-25 06:48:55,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:55,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:55,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:55,930 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:56,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:56,192 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:56,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56 WrapperNode [2020-09-25 06:48:56,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:56,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:56,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:56,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:56,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (1/1) ... [2020-09-25 06:48:56,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:56,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:56,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:56,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:56,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (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 06:48:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:58,424 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:58,424 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:58,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:58 BoogieIcfgContainer [2020-09-25 06:48:58,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:58,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:58,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:58,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:58,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:55" (1/3) ... [2020-09-25 06:48:58,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ebdc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:58, skipping insertion in model container [2020-09-25 06:48:58,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:56" (2/3) ... [2020-09-25 06:48:58,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ebdc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:58, skipping insertion in model container [2020-09-25 06:48:58,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:58" (3/3) ... [2020-09-25 06:48:58,448 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 06:48:58,460 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:58,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:58,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:58,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:58,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:58,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:58,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:58,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:58,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:58,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:58,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:58,572 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 06:48:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 06:48:58,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:58,585 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] [2020-09-25 06:48:58,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 06:48:58,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:58,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232003021] [2020-09-25 06:48:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:59,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:59,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:48:59,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 06:48:59,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:59,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 06:48:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:59,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:48:59,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:59,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:59,758 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 06:48:59,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232003021] [2020-09-25 06:48:59,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:59,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:59,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59344028] [2020-09-25 06:48:59,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:59,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:59,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:59,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:59,795 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 06:49:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:02,574 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 06:49:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:49:02,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 06:49:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:02,605 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 06:49:02,605 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 06:49:02,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:49:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 06:49:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 06:49:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 06:49:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 06:49:02,735 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-25 06:49:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:02,736 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 06:49:02,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:49:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 06:49:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 06:49:02,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:02,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:02,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:49:02,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:02,747 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-25 06:49:02,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:02,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350042596] [2020-09-25 06:49:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 06:49:07,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-09-25 06:49:07,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:07,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:49:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:07,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:49:08,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:08,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:49:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:08,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:49:08,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 06:49:08,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:08,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:49:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:08,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350042596] [2020-09-25 06:49:08,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:08,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:08,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888620800] [2020-09-25 06:49:08,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:08,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:08,280 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 06:49:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:11,839 INFO L93 Difference]: Finished difference Result 2101 states and 2645 transitions. [2020-09-25 06:49:11,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:11,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-09-25 06:49:11,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:11,848 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 06:49:11,849 INFO L226 Difference]: Without dead ends: 1310 [2020-09-25 06:49:11,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:49:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-25 06:49:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1192. [2020-09-25 06:49:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-25 06:49:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1448 transitions. [2020-09-25 06:49:11,904 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1448 transitions. Word has length 141 [2020-09-25 06:49:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:11,905 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1448 transitions. [2020-09-25 06:49:11,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1448 transitions. [2020-09-25 06:49:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 06:49:11,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:11,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:11,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:11,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:11,910 INFO L82 PathProgramCache]: Analyzing trace with hash 223490446, now seen corresponding path program 1 times [2020-09-25 06:49:11,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:11,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104109697] [2020-09-25 06:49:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:15,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 06:49:15,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:49:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3279 [2020-09-25 06:49:15,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:15,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:49:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:49:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:49:15,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:15,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:49:15,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:15,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:49:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:15,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:15,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:15,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 06:49:15,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:15,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:49:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:15,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104109697] [2020-09-25 06:49:15,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:15,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:15,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837355349] [2020-09-25 06:49:15,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:15,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:15,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:15,591 INFO L87 Difference]: Start difference. First operand 1192 states and 1448 transitions. Second operand 7 states. [2020-09-25 06:49:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:18,911 INFO L93 Difference]: Finished difference Result 3085 states and 3863 transitions. [2020-09-25 06:49:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:18,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 06:49:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:18,925 INFO L225 Difference]: With dead ends: 3085 [2020-09-25 06:49:18,925 INFO L226 Difference]: Without dead ends: 1908 [2020-09-25 06:49:18,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-09-25 06:49:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1862. [2020-09-25 06:49:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-09-25 06:49:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2200 transitions. [2020-09-25 06:49:18,991 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2200 transitions. Word has length 144 [2020-09-25 06:49:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:18,992 INFO L479 AbstractCegarLoop]: Abstraction has 1862 states and 2200 transitions. [2020-09-25 06:49:18,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2200 transitions. [2020-09-25 06:49:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 06:49:18,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:18,999 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 06:49:18,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:19,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:19,000 INFO L82 PathProgramCache]: Analyzing trace with hash 209857670, now seen corresponding path program 1 times [2020-09-25 06:49:19,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:19,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393150862] [2020-09-25 06:49:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:24,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 06:49:24,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 06:49:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:24,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:49:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:49:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:24,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:49:24,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:24,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:24,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:24,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 06:49:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:24,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:24,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:49:24,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:49:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:24,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:49:24,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 06:49:24,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:24,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:49:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:49:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:25,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393150862] [2020-09-25 06:49:25,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:25,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:25,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311618131] [2020-09-25 06:49:25,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:25,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:25,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:25,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:25,064 INFO L87 Difference]: Start difference. First operand 1862 states and 2200 transitions. Second operand 8 states. [2020-09-25 06:49:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:28,785 INFO L93 Difference]: Finished difference Result 4217 states and 5173 transitions. [2020-09-25 06:49:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:28,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 06:49:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:28,799 INFO L225 Difference]: With dead ends: 4217 [2020-09-25 06:49:28,799 INFO L226 Difference]: Without dead ends: 2559 [2020-09-25 06:49:28,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:28,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2020-09-25 06:49:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2519. [2020-09-25 06:49:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-09-25 06:49:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2963 transitions. [2020-09-25 06:49:28,880 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2963 transitions. Word has length 249 [2020-09-25 06:49:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:28,881 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2963 transitions. [2020-09-25 06:49:28,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2963 transitions. [2020-09-25 06:49:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 06:49:28,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:28,888 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:28,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:28,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:28,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:28,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1445306711, now seen corresponding path program 1 times [2020-09-25 06:49:28,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:28,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068070274] [2020-09-25 06:49:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:33,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:33,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 06:49:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:49:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:49:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:33,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:49:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:49:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 06:49:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:34,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:49:34,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:34,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:34,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 06:49:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:34,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:49:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:49:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:34,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:49:34,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 06:49:34,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:34,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 06:49:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:35,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068070274] [2020-09-25 06:49:35,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:35,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:35,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968055237] [2020-09-25 06:49:35,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:35,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:35,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:35,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:35,077 INFO L87 Difference]: Start difference. First operand 2519 states and 2963 transitions. Second operand 8 states. [2020-09-25 06:49:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:39,622 INFO L93 Difference]: Finished difference Result 5873 states and 7070 transitions. [2020-09-25 06:49:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:49:39,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-09-25 06:49:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:39,645 INFO L225 Difference]: With dead ends: 5873 [2020-09-25 06:49:39,645 INFO L226 Difference]: Without dead ends: 3558 [2020-09-25 06:49:39,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:49:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2020-09-25 06:49:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3512. [2020-09-25 06:49:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3512 states. [2020-09-25 06:49:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 4060 transitions. [2020-09-25 06:49:39,739 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 4060 transitions. Word has length 304 [2020-09-25 06:49:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:39,740 INFO L479 AbstractCegarLoop]: Abstraction has 3512 states and 4060 transitions. [2020-09-25 06:49:39,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 4060 transitions. [2020-09-25 06:49:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 06:49:39,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:39,748 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:39,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:39,749 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:39,749 INFO L82 PathProgramCache]: Analyzing trace with hash 136115333, now seen corresponding path program 1 times [2020-09-25 06:49:39,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:39,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075230869] [2020-09-25 06:49:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking...