/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/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:25,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:25,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:25,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:25,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:25,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:25,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:25,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:25,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:25,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:25,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:25,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:25,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:25,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:25,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:25,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:25,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:25,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:25,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:25,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:25,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:25,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:25,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:25,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:25,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:25,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:25,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:25,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:25,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:25,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:25,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:25,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:25,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:25,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:25,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:25,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:25,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:25,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:25,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:25,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:25,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:25,757 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 06:42:25,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:25,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:25,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:25,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:25,785 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:25,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:25,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:25,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:25,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:25,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:25,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:25,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:25,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:25,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:25,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:25,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:25,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:25,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:25,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:25,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:25,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:25,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:25,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:25,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:25,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:25,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:25,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:25,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:25,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:25,790 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 06:42:26,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:26,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:26,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:26,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:26,300 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:26,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 06:42:26,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29815f318/1f85bbe5d4984cb0b013a956b5cc3c02/FLAG1e417f289 [2020-09-25 06:42:27,011 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:27,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 06:42:27,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29815f318/1f85bbe5d4984cb0b013a956b5cc3c02/FLAG1e417f289 [2020-09-25 06:42:27,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29815f318/1f85bbe5d4984cb0b013a956b5cc3c02 [2020-09-25 06:42:27,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:27,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:27,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:27,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:27,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:27,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:27" (1/1) ... [2020-09-25 06:42:27,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:27, skipping insertion in model container [2020-09-25 06:42:27,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:27" (1/1) ... [2020-09-25 06:42:27,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:27,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:27,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:27,817 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:28,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:28,062 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:28,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28 WrapperNode [2020-09-25 06:42:28,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:28,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:28,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:28,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:28,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:28,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:28,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:28,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:28,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (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 06:42:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:29,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:29,623 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:29,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:29 BoogieIcfgContainer [2020-09-25 06:42:29,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:29,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:29,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:29,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:29,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:27" (1/3) ... [2020-09-25 06:42:29,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:29, skipping insertion in model container [2020-09-25 06:42:29,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:28" (2/3) ... [2020-09-25 06:42:29,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:29, skipping insertion in model container [2020-09-25 06:42:29,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:29" (3/3) ... [2020-09-25 06:42:29,643 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 06:42:29,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:29,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:29,691 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:29,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:29,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:29,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:29,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:29,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:29,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:29,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:29,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 06:42:29,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:29,793 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 06:42:29,794 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:29,803 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 06:42:29,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:29,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234330163] [2020-09-25 06:42:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:35,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 06:42:35,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:42:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:42:35,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:35,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:35,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:35,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 06:42:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:42:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:35,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:42:35,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:35,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:35,450 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 06:42:35,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234330163] [2020-09-25 06:42:35,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:35,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:35,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585980248] [2020-09-25 06:42:35,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:35,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:35,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:35,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:35,483 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:37,839 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 06:42:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:37,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 06:42:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:37,871 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 06:42:37,872 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 06:42:37,881 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 06:42:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 06:42:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 06:42:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 06:42:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 06:42:37,991 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 06:42:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:37,992 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 06:42:37,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 06:42:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 06:42:38,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:38,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:38,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:38,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 06:42:38,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:38,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49984412] [2020-09-25 06:42:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:43,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 06:42:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-09-25 06:42:43,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:43,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:42:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 06:42:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:43,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:42:43,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:43,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:43,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:42:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:42:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:43,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49984412] [2020-09-25 06:42:43,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:43,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:43,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585608892] [2020-09-25 06:42:43,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:43,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:43,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:43,412 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 06:42:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:45,612 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-25 06:42:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:45,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 06:42:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:45,629 INFO L225 Difference]: With dead ends: 1688 [2020-09-25 06:42:45,629 INFO L226 Difference]: Without dead ends: 1048 [2020-09-25 06:42:45,632 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 06:42:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-25 06:42:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-25 06:42:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 06:42:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-25 06:42:45,680 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 154 [2020-09-25 06:42:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:45,681 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-25 06:42:45,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-25 06:42:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 06:42:45,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:45,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:42:45,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:45,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 06:42:45,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:45,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248687011] [2020-09-25 06:42:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 06:42:50,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:42:50,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:42:50,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:42:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:50,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 06:42:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:51,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248687011] [2020-09-25 06:42:51,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:51,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:51,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399774448] [2020-09-25 06:42:51,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:51,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:51,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:51,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:51,047 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 7 states. [2020-09-25 06:42:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:53,570 INFO L93 Difference]: Finished difference Result 2614 states and 3345 transitions. [2020-09-25 06:42:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:53,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 06:42:53,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:53,592 INFO L225 Difference]: With dead ends: 2614 [2020-09-25 06:42:53,592 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 06:42:53,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 06:42:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1617. [2020-09-25 06:42:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-09-25 06:42:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1991 transitions. [2020-09-25 06:42:53,720 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1991 transitions. Word has length 175 [2020-09-25 06:42:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:53,721 INFO L479 AbstractCegarLoop]: Abstraction has 1617 states and 1991 transitions. [2020-09-25 06:42:53,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1991 transitions. [2020-09-25 06:42:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 06:42:53,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:53,735 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:53,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:53,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:53,736 INFO L82 PathProgramCache]: Analyzing trace with hash -699904969, now seen corresponding path program 1 times [2020-09-25 06:42:53,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:53,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902031728] [2020-09-25 06:42:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 06:42:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:42:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:58,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:42:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:42:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:58,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:42:58,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:58,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:59,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:59,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 06:42:59,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:59,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:59,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902031728] [2020-09-25 06:42:59,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:59,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:59,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927738487] [2020-09-25 06:42:59,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:59,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:59,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:59,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:59,093 INFO L87 Difference]: Start difference. First operand 1617 states and 1991 transitions. Second operand 7 states. [2020-09-25 06:43:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:01,557 INFO L93 Difference]: Finished difference Result 3828 states and 4892 transitions. [2020-09-25 06:43:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:01,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-25 06:43:01,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:01,572 INFO L225 Difference]: With dead ends: 3828 [2020-09-25 06:43:01,572 INFO L226 Difference]: Without dead ends: 2235 [2020-09-25 06:43:01,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:01,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-09-25 06:43:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2137. [2020-09-25 06:43:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-09-25 06:43:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2596 transitions. [2020-09-25 06:43:01,662 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2596 transitions. Word has length 185 [2020-09-25 06:43:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:01,662 INFO L479 AbstractCegarLoop]: Abstraction has 2137 states and 2596 transitions. [2020-09-25 06:43:01,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2596 transitions. [2020-09-25 06:43:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 06:43:01,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:01,673 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:43:01,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:01,674 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -568607469, now seen corresponding path program 1 times [2020-09-25 06:43:01,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:01,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873780313] [2020-09-25 06:43:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 06:43:06,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:43:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:43:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:43:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:43:06,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:43:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:43:06,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:43:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 06:43:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:06,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:43:06,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:43:07,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873780313] [2020-09-25 06:43:07,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:07,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:07,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308953016] [2020-09-25 06:43:07,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:07,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:07,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:07,023 INFO L87 Difference]: Start difference. First operand 2137 states and 2596 transitions. Second operand 7 states. [2020-09-25 06:43:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:10,529 INFO L93 Difference]: Finished difference Result 5976 states and 7606 transitions. [2020-09-25 06:43:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:43:10,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 06:43:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:10,559 INFO L225 Difference]: With dead ends: 5976 [2020-09-25 06:43:10,559 INFO L226 Difference]: Without dead ends: 3863 [2020-09-25 06:43:10,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-09-25 06:43:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3200. [2020-09-25 06:43:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-09-25 06:43:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 3958 transitions. [2020-09-25 06:43:10,707 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 3958 transitions. Word has length 192 [2020-09-25 06:43:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:10,709 INFO L479 AbstractCegarLoop]: Abstraction has 3200 states and 3958 transitions. [2020-09-25 06:43:10,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 3958 transitions. [2020-09-25 06:43:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 06:43:10,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:10,728 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:10,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:10,728 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash 583693752, now seen corresponding path program 1 times [2020-09-25 06:43:10,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:10,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602674825] [2020-09-25 06:43:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:15,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 06:43:15,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 06:43:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:15,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:15,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:43:15,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:15,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:16,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:16,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 06:43:16,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:16,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 06:43:16,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602674825] [2020-09-25 06:43:16,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:16,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:16,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391981824] [2020-09-25 06:43:16,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:16,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:16,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:16,105 INFO L87 Difference]: Start difference. First operand 3200 states and 3958 transitions. Second operand 5 states.