/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:30,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:30,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:30,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:30,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:30,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:30,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:30,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:30,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:30,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:30,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:30,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:30,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:30,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:30,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:30,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:30,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:30,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:30,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:30,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:30,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:30,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:30,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:30,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:30,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:30,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:30,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:30,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:30,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:30,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 21:42:30,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:30,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:30,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:30,581 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 [2020-09-24 21:42:30,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:30,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:30,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:30,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:30,628 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:30,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:30,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:30,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:30,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:30,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:30,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:30,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:30,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:30,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:30,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:30,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:30,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:30,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:30,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:30,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:30,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:30,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:30,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:30,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:30,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:30,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:30,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:30,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:30,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:30,639 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:42:31,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:31,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:31,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:31,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:31,141 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:31,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-24 21:42:31,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397bd59ba/a4038901af1a401083e19beccaa78f49/FLAG5ef3ff347 [2020-09-24 21:42:31,883 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:31,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-24 21:42:31,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397bd59ba/a4038901af1a401083e19beccaa78f49/FLAG5ef3ff347 [2020-09-24 21:42:32,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397bd59ba/a4038901af1a401083e19beccaa78f49 [2020-09-24 21:42:32,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:32,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:32,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:32,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:32,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:32,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:32" (1/1) ... [2020-09-24 21:42:32,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:32, skipping insertion in model container [2020-09-24 21:42:32,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:32" (1/1) ... [2020-09-24 21:42:32,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:32,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:32,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:32,708 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:33,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:33,020 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:33,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33 WrapperNode [2020-09-24 21:42:33,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:33,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:33,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:33,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:33,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (1/1) ... [2020-09-24 21:42:33,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:33,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:33,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:33,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:33,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (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 [2020-09-24 21:42:33,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:33,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:33,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:33,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:34,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:34,556 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:34,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:34 BoogieIcfgContainer [2020-09-24 21:42:34,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:34,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:34,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:34,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:34,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:32" (1/3) ... [2020-09-24 21:42:34,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:34, skipping insertion in model container [2020-09-24 21:42:34,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:33" (2/3) ... [2020-09-24 21:42:34,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:34, skipping insertion in model container [2020-09-24 21:42:34,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:34" (3/3) ... [2020-09-24 21:42:34,577 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-24 21:42:34,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:34,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:34,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:34,659 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:34,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:34,660 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:34,660 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:34,660 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:34,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:34,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:34,661 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 21:42:34,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:34,716 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] [2020-09-24 21:42:34,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:34,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-24 21:42:34,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:34,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-24 21:42:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 21:42:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:42:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:42:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:42:40,834 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-09-24 21:42:41,069 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-09-24 21:42:41,302 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 45 [2020-09-24 21:42:41,517 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2020-09-24 21:42:41,696 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 36 [2020-09-24 21:42:41,858 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 31 [2020-09-24 21:42:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:42,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:42,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:42,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 21:42:42,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:42,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-24 21:42:42,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:42,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:42,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226941658] [2020-09-24 21:42:42,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:42,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:42,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:42,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:42,381 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:43,028 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-09-24 21:42:43,368 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-09-24 21:42:43,665 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2020-09-24 21:42:44,291 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-09-24 21:42:44,715 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2020-09-24 21:42:44,897 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-24 21:42:46,063 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-09-24 21:42:46,315 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2020-09-24 21:42:46,676 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 21:42:46,854 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-24 21:42:47,501 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2020-09-24 21:42:48,052 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-09-24 21:42:48,282 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 21:42:49,393 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:49,841 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:42:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:52,409 INFO L93 Difference]: Finished difference Result 1860 states and 2652 transitions. [2020-09-24 21:42:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:52,412 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 128 [2020-09-24 21:42:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:52,440 INFO L225 Difference]: With dead ends: 1860 [2020-09-24 21:42:52,441 INFO L226 Difference]: Without dead ends: 1230 [2020-09-24 21:42:52,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:52,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-09-24 21:42:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1070. [2020-09-24 21:42:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-09-24 21:42:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1287 transitions. [2020-09-24 21:42:52,584 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1287 transitions. Word has length 128 [2020-09-24 21:42:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:52,585 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1287 transitions. [2020-09-24 21:42:52,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1287 transitions. [2020-09-24 21:42:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 21:42:52,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:52,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:52,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:52,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1957760341, now seen corresponding path program 1 times [2020-09-24 21:42:52,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:52,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171715404] [2020-09-24 21:42:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:57,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:42:57,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:42:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 21:42:57,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:42:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:58,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:58,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:58,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:58,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:42:58,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:58,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:58,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:58,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 21:42:58,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:59,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171715404] [2020-09-24 21:42:59,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:59,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:42:59,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303237887] [2020-09-24 21:42:59,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:42:59,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:59,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:42:59,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:42:59,325 INFO L87 Difference]: Start difference. First operand 1070 states and 1287 transitions. Second operand 19 states. [2020-09-24 21:43:00,272 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:43:00,806 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-09-24 21:43:01,147 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-09-24 21:43:01,318 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-09-24 21:43:01,492 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-09-24 21:43:02,263 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2020-09-24 21:43:02,788 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-09-24 21:43:03,102 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 21:43:03,433 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-09-24 21:43:04,354 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-09-24 21:43:05,061 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-09-24 21:43:05,522 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-09-24 21:43:06,611 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-09-24 21:43:07,277 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-09-24 21:43:07,766 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-09-24 21:43:08,209 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-09-24 21:43:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:43:10,160 INFO L93 Difference]: Finished difference Result 4041 states and 5373 transitions. [2020-09-24 21:43:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 21:43:10,163 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-09-24 21:43:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:43:10,190 INFO L225 Difference]: With dead ends: 4041 [2020-09-24 21:43:10,190 INFO L226 Difference]: Without dead ends: 3051 [2020-09-24 21:43:10,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=685, Invalid=1571, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 21:43:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2020-09-24 21:43:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2832. [2020-09-24 21:43:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2832 states. [2020-09-24 21:43:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3404 transitions. [2020-09-24 21:43:10,339 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3404 transitions. Word has length 150 [2020-09-24 21:43:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:43:10,340 INFO L479 AbstractCegarLoop]: Abstraction has 2832 states and 3404 transitions. [2020-09-24 21:43:10,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:43:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3404 transitions. [2020-09-24 21:43:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 21:43:10,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:10,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:43:10,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:43:10,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1710394006, now seen corresponding path program 1 times [2020-09-24 21:43:10,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:10,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258454621] [2020-09-24 21:43:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:15,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 21:43:15,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:43:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 21:43:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:43:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:43:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:43:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:15,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:15,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:15,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 21:43:15,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:15,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:43:15,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:15,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:43:15,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:43:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 21:43:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:43:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:43:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:43:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:43:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:43:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 21:43:15,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:43:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:43:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:43:16,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258454621] [2020-09-24 21:43:16,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:43:16,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:43:16,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375311177] [2020-09-24 21:43:16,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:43:16,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:16,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:43:16,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:43:16,106 INFO L87 Difference]: Start difference. First operand 2832 states and 3404 transitions. Second operand 13 states. [2020-09-24 21:43:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:43:22,204 INFO L93 Difference]: Finished difference Result 8494 states and 11254 transitions. [2020-09-24 21:43:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 21:43:22,205 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-09-24 21:43:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:43:22,239 INFO L225 Difference]: With dead ends: 8494 [2020-09-24 21:43:22,240 INFO L226 Difference]: Without dead ends: 5392 [2020-09-24 21:43:22,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:43:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2020-09-24 21:43:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 4752. [2020-09-24 21:43:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4752 states. [2020-09-24 21:43:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 5893 transitions. [2020-09-24 21:43:22,428 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 5893 transitions. Word has length 163 [2020-09-24 21:43:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:43:22,428 INFO L479 AbstractCegarLoop]: Abstraction has 4752 states and 5893 transitions. [2020-09-24 21:43:22,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:43:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 5893 transitions. [2020-09-24 21:43:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 21:43:22,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:22,452 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:43:22,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:43:22,453 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1040363966, now seen corresponding path program 1 times [2020-09-24 21:43:22,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:22,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227511647] [2020-09-24 21:43:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking...