/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/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:49,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:49,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:49,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:49,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:49,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:49,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:49,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:49,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:49,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:49,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:49,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:49,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:49,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:49,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:49,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:49,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:49,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:49,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:49,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:49,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:49,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:49,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:49,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:49,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:49,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:49,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:49,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:49,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:49,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:49,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:49,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:49,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:49,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:49,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:49,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:49,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:49,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:49,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:49,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:49,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:49,471 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 21:44:49,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:49,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:49,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:49,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:49,499 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:49,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:49,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:49,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:49,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:49,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:49,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:49,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:49,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:49,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:49,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:49,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:49,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:49,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:49,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:49,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:49,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:49,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:49,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:49,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:49,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:49,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:49,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:49,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:49,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:49,504 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 21:44:49,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:49,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:49,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:49,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:49,990 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:49,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-24 21:44:50,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ae0a37d1/f846e8d5ed0b453a8f87dc114dc6c36f/FLAG9efab30ba [2020-09-24 21:44:50,742 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:50,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-24 21:44:50,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ae0a37d1/f846e8d5ed0b453a8f87dc114dc6c36f/FLAG9efab30ba [2020-09-24 21:44:50,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ae0a37d1/f846e8d5ed0b453a8f87dc114dc6c36f [2020-09-24 21:44:50,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:50,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:51,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:51,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:51,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:51,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:50" (1/1) ... [2020-09-24 21:44:51,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51, skipping insertion in model container [2020-09-24 21:44:51,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:50" (1/1) ... [2020-09-24 21:44:51,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:51,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:51,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:51,705 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:51,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:51,858 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:51,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51 WrapperNode [2020-09-24 21:44:51,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:51,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:51,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:51,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:51,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:51,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:52,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:52,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:52,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:52,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:53,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:53,605 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:53,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:53 BoogieIcfgContainer [2020-09-24 21:44:53,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:53,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:53,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:53,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:50" (1/3) ... [2020-09-24 21:44:53,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:53, skipping insertion in model container [2020-09-24 21:44:53,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (2/3) ... [2020-09-24 21:44:53,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:53, skipping insertion in model container [2020-09-24 21:44:53,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:53" (3/3) ... [2020-09-24 21:44:53,626 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-24 21:44:53,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:53,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:53,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:53,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:53,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:53,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:53,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:53,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:53,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:53,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:53,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 21:44:53,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:53,757 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] [2020-09-24 21:44:53,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:53,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-24 21:44:53,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:53,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872194903] [2020-09-24 21:44:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:44:54,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-09-24 21:44:54,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 21:44:54,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:55,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:55,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:55,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:44:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:55,048 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 21:44:55,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872194903] [2020-09-24 21:44:55,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:55,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:55,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894335284] [2020-09-24 21:44:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:55,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:55,084 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:57,290 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 21:44:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:57,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 21:44:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:57,316 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 21:44:57,317 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 21:44:57,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 21:44:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 21:44:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:44:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 21:44:57,437 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-24 21:44:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:57,438 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 21:44:57,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 21:44:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 21:44:57,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:57,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:57,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:57,447 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-24 21:44:57,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:57,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204931657] [2020-09-24 21:44:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:02,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 21:45:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:45:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 21:45:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:02,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:02,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 21:45:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:02,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204931657] [2020-09-24 21:45:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:02,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611891463] [2020-09-24 21:45:02,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:02,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:02,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:02,961 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 21:45:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:04,924 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 21:45:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:45:04,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-24 21:45:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:04,931 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 21:45:04,931 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 21:45:04,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:04,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 21:45:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 21:45:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 21:45:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 21:45:04,971 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 129 [2020-09-24 21:45:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:04,972 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 21:45:04,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 21:45:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 21:45:04,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:04,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:04,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:04,979 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:04,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:04,979 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-24 21:45:04,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:04,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609771959] [2020-09-24 21:45:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 21:45:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2367 [2020-09-24 21:45:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:07,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:45:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-24 21:45:07,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:08,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609771959] [2020-09-24 21:45:08,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:08,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:08,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005371365] [2020-09-24 21:45:08,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:08,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:08,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:08,237 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 9 states. [2020-09-24 21:45:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:11,225 INFO L93 Difference]: Finished difference Result 1797 states and 2298 transitions. [2020-09-24 21:45:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:11,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-09-24 21:45:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:11,234 INFO L225 Difference]: With dead ends: 1797 [2020-09-24 21:45:11,234 INFO L226 Difference]: Without dead ends: 1081 [2020-09-24 21:45:11,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-24 21:45:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 886. [2020-09-24 21:45:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 21:45:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1117 transitions. [2020-09-24 21:45:11,279 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1117 transitions. Word has length 129 [2020-09-24 21:45:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:11,280 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1117 transitions. [2020-09-24 21:45:11,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1117 transitions. [2020-09-24 21:45:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 21:45:11,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:11,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:11,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:11,286 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1803971759, now seen corresponding path program 1 times [2020-09-24 21:45:11,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:11,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32483187] [2020-09-24 21:45:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:14,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 21:45:14,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3532 [2020-09-24 21:45:14,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:14,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:45:14,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 21:45:15,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:15,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32483187] [2020-09-24 21:45:15,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:15,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:15,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847001336] [2020-09-24 21:45:15,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:15,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:15,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:15,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:15,394 INFO L87 Difference]: Start difference. First operand 886 states and 1117 transitions. Second operand 7 states. [2020-09-24 21:45:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:17,415 INFO L93 Difference]: Finished difference Result 1947 states and 2588 transitions. [2020-09-24 21:45:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:17,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-09-24 21:45:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:17,422 INFO L225 Difference]: With dead ends: 1947 [2020-09-24 21:45:17,422 INFO L226 Difference]: Without dead ends: 1226 [2020-09-24 21:45:17,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-09-24 21:45:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1210. [2020-09-24 21:45:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-09-24 21:45:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1564 transitions. [2020-09-24 21:45:17,486 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1564 transitions. Word has length 178 [2020-09-24 21:45:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:17,488 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1564 transitions. [2020-09-24 21:45:17,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1564 transitions. [2020-09-24 21:45:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 21:45:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:17,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:17,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:17,500 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1550966703, now seen corresponding path program 1 times [2020-09-24 21:45:17,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:17,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661955134] [2020-09-24 21:45:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:22,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-24 21:45:22,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 21:45:22,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:22,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:22,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:22,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 21:45:22,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:22,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:22,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:23,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:23,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 21:45:23,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:23,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:23,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:23,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:23,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:23,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 21:45:23,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:23,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661955134] [2020-09-24 21:45:23,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:23,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:23,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672036926] [2020-09-24 21:45:23,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:23,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:23,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:23,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:23,791 INFO L87 Difference]: Start difference. First operand 1210 states and 1564 transitions. Second operand 13 states. [2020-09-24 21:45:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:29,659 INFO L93 Difference]: Finished difference Result 3440 states and 4950 transitions. [2020-09-24 21:45:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:45:29,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 227 [2020-09-24 21:45:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:29,676 INFO L225 Difference]: With dead ends: 3440 [2020-09-24 21:45:29,676 INFO L226 Difference]: Without dead ends: 2352 [2020-09-24 21:45:29,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:45:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-09-24 21:45:29,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1916. [2020-09-24 21:45:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-09-24 21:45:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2601 transitions. [2020-09-24 21:45:29,780 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2601 transitions. Word has length 227 [2020-09-24 21:45:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:29,780 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2601 transitions. [2020-09-24 21:45:29,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2601 transitions. [2020-09-24 21:45:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-24 21:45:29,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:29,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:29,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:29,786 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:29,786 INFO L82 PathProgramCache]: Analyzing trace with hash -710414905, now seen corresponding path program 1 times [2020-09-24 21:45:29,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:29,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841574190] [2020-09-24 21:45:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 21:45:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:45:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-09-24 21:45:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:34,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:34,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:34,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:34,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:35,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 21:45:35,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:45:35,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 21:45:35,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:45:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 126 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:35,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841574190] [2020-09-24 21:45:35,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:35,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:35,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605711014] [2020-09-24 21:45:35,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:35,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:35,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:35,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:35,481 INFO L87 Difference]: Start difference. First operand 1916 states and 2601 transitions. Second operand 10 states. [2020-09-24 21:45:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:38,808 INFO L93 Difference]: Finished difference Result 4404 states and 6206 transitions. [2020-09-24 21:45:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:45:38,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 233 [2020-09-24 21:45:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:38,825 INFO L225 Difference]: With dead ends: 4404 [2020-09-24 21:45:38,825 INFO L226 Difference]: Without dead ends: 2653 [2020-09-24 21:45:38,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:45:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2020-09-24 21:45:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2118. [2020-09-24 21:45:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2118 states. [2020-09-24 21:45:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2836 transitions. [2020-09-24 21:45:38,902 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2836 transitions. Word has length 233 [2020-09-24 21:45:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:38,902 INFO L479 AbstractCegarLoop]: Abstraction has 2118 states and 2836 transitions. [2020-09-24 21:45:38,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2836 transitions. [2020-09-24 21:45:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-24 21:45:38,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:38,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:38,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:45:38,909 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:38,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:38,909 INFO L82 PathProgramCache]: Analyzing trace with hash 226297024, now seen corresponding path program 1 times [2020-09-24 21:45:38,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:38,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778437615] [2020-09-24 21:45:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking...