/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:38:38,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:38:38,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:38:38,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:38:38,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:38:38,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:38:38,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:38:38,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:38:38,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:38:38,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:38:38,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:38:38,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:38:38,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:38:38,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:38:38,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:38:38,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:38:38,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:38:38,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:38:38,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:38:38,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:38:38,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:38:38,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:38:38,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:38:38,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:38:38,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:38:38,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:38:38,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:38:38,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:38:38,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:38:38,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:38:38,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:38:38,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:38:38,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:38:38,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:38:38,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:38:38,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:38:38,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:38:38,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:38:38,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:38:38,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:38:38,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:38:38,620 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 20:38:38,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:38:38,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:38:38,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:38:38,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:38:38,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:38:38,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:38:38,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:38:38,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:38:38,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:38:38,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:38:38,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:38:38,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:38:38,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:38:38,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:38:38,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:38:38,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:38:38,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:38:38,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:38:38,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:38:38,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:38:38,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:38:38,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:38:38,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:38:38,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:38:38,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:38:38,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:38:38,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:38:38,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:38:38,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:38:38,653 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:38:39,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:38:39,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:38:39,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:38:39,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:38:39,147 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:38:39,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-09-24 20:38:39,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0525baf46/a9ae550a03a044e9bd7031930d67cd5b/FLAG0130fa05e [2020-09-24 20:38:39,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:38:39,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-09-24 20:38:39,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0525baf46/a9ae550a03a044e9bd7031930d67cd5b/FLAG0130fa05e [2020-09-24 20:38:40,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0525baf46/a9ae550a03a044e9bd7031930d67cd5b [2020-09-24 20:38:40,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:38:40,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:38:40,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:38:40,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:38:40,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:38:40,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d574d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40, skipping insertion in model container [2020-09-24 20:38:40,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:38:40,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:38:40,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:38:40,465 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:38:40,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:38:40,521 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:38:40,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40 WrapperNode [2020-09-24 20:38:40,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:38:40,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:38:40,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:38:40,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:38:40,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (1/1) ... [2020-09-24 20:38:40,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:38:40,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:38:40,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:38:40,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:38:40,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (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 20:38:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:38:40,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:38:40,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:38:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:38:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:38:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:38:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:38:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:38:41,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:38:41,340 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:38:41,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:38:41 BoogieIcfgContainer [2020-09-24 20:38:41,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:38:41,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:38:41,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:38:41,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:38:41,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:38:40" (1/3) ... [2020-09-24 20:38:41,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4631a0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:38:41, skipping insertion in model container [2020-09-24 20:38:41,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:38:40" (2/3) ... [2020-09-24 20:38:41,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4631a0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:38:41, skipping insertion in model container [2020-09-24 20:38:41,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:38:41" (3/3) ... [2020-09-24 20:38:41,359 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-09-24 20:38:41,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:38:41,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:38:41,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:38:41,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:38:41,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:38:41,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:38:41,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:38:41,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:38:41,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:38:41,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:38:41,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:38:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-09-24 20:38:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:38:41,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:41,472 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] [2020-09-24 20:38:41,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1735850516, now seen corresponding path program 1 times [2020-09-24 20:38:41,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:41,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137978342] [2020-09-24 20:38:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:41,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:41,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:38:41,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 20:38:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 20:38:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:38:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:41,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:41,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:41,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:38:41,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:41,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:38:41,863 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 20:38:41,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137978342] [2020-09-24 20:38:41,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:41,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:38:41,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397554094] [2020-09-24 20:38:41,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:38:41,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:41,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:38:41,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:38:41,904 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 3 states. [2020-09-24 20:38:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:42,000 INFO L93 Difference]: Finished difference Result 368 states and 482 transitions. [2020-09-24 20:38:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:38:42,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-24 20:38:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:42,022 INFO L225 Difference]: With dead ends: 368 [2020-09-24 20:38:42,023 INFO L226 Difference]: Without dead ends: 163 [2020-09-24 20:38:42,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:38:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-24 20:38:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-09-24 20:38:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-24 20:38:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-09-24 20:38:42,127 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 35 [2020-09-24 20:38:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:42,127 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-09-24 20:38:42,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:38:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-09-24 20:38:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:38:42,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:42,130 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] [2020-09-24 20:38:42,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:38:42,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:42,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:42,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1081886035, now seen corresponding path program 1 times [2020-09-24 20:38:42,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:42,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989881432] [2020-09-24 20:38:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:42,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:42,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:42,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:38:42,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:38:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 20:38:42,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:38:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:38:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:38:42,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:42,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:42,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:42,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:42,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:38:42,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:42,493 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 20:38:42,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989881432] [2020-09-24 20:38:42,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:42,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:42,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988149373] [2020-09-24 20:38:42,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:42,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:42,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:42,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:42,498 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 4 states. [2020-09-24 20:38:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:42,950 INFO L93 Difference]: Finished difference Result 436 states and 526 transitions. [2020-09-24 20:38:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:42,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-24 20:38:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:42,955 INFO L225 Difference]: With dead ends: 436 [2020-09-24 20:38:42,955 INFO L226 Difference]: Without dead ends: 281 [2020-09-24 20:38:42,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:38:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-24 20:38:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 268. [2020-09-24 20:38:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 20:38:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 321 transitions. [2020-09-24 20:38:42,981 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 321 transitions. Word has length 36 [2020-09-24 20:38:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:42,982 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 321 transitions. [2020-09-24 20:38:42,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 321 transitions. [2020-09-24 20:38:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 20:38:42,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:42,984 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] [2020-09-24 20:38:42,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:38:42,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:42,985 INFO L82 PathProgramCache]: Analyzing trace with hash -766916633, now seen corresponding path program 1 times [2020-09-24 20:38:42,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:42,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521965311] [2020-09-24 20:38:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:43,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:43,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:38:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:38:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 20:38:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:38:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:38:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:43,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:43,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:43,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:38:43,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:38:43,134 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 20:38:43,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521965311] [2020-09-24 20:38:43,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:43,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:43,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836860973] [2020-09-24 20:38:43,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:43,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:43,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:43,138 INFO L87 Difference]: Start difference. First operand 268 states and 321 transitions. Second operand 4 states. [2020-09-24 20:38:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:43,531 INFO L93 Difference]: Finished difference Result 558 states and 672 transitions. [2020-09-24 20:38:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:43,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 20:38:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:43,535 INFO L225 Difference]: With dead ends: 558 [2020-09-24 20:38:43,535 INFO L226 Difference]: Without dead ends: 304 [2020-09-24 20:38:43,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:38:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-24 20:38:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 283. [2020-09-24 20:38:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-24 20:38:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 336 transitions. [2020-09-24 20:38:43,589 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 336 transitions. Word has length 40 [2020-09-24 20:38:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:43,589 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 336 transitions. [2020-09-24 20:38:43,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 336 transitions. [2020-09-24 20:38:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 20:38:43,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:43,595 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] [2020-09-24 20:38:43,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:38:43,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:43,596 INFO L82 PathProgramCache]: Analyzing trace with hash -428581962, now seen corresponding path program 1 times [2020-09-24 20:38:43,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:43,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323663915] [2020-09-24 20:38:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:38:43,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 20:38:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:43,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 20:38:43,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:38:43,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:38:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:43,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:43,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:38:43,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:43,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:38:43,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323663915] [2020-09-24 20:38:43,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:43,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:43,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614316485] [2020-09-24 20:38:43,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:43,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:43,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:43,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:43,836 INFO L87 Difference]: Start difference. First operand 283 states and 336 transitions. Second operand 4 states. [2020-09-24 20:38:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:43,941 INFO L93 Difference]: Finished difference Result 521 states and 620 transitions. [2020-09-24 20:38:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:43,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-24 20:38:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:43,944 INFO L225 Difference]: With dead ends: 521 [2020-09-24 20:38:43,944 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 20:38:43,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 20:38:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 20:38:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-09-24 20:38:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-24 20:38:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 294 transitions. [2020-09-24 20:38:43,958 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 294 transitions. Word has length 62 [2020-09-24 20:38:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:43,959 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 294 transitions. [2020-09-24 20:38:43,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 294 transitions. [2020-09-24 20:38:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:38:43,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:43,964 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] [2020-09-24 20:38:43,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:38:43,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:43,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2059109809, now seen corresponding path program 1 times [2020-09-24 20:38:43,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:43,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122357185] [2020-09-24 20:38:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:44,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 20:38:44,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:38:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 20:38:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 20:38:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:38:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:44,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:44,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:44,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:38:44,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:44,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:38:44,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122357185] [2020-09-24 20:38:44,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:44,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:44,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182836507] [2020-09-24 20:38:44,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:44,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:44,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:44,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:44,256 INFO L87 Difference]: Start difference. First operand 252 states and 294 transitions. Second operand 4 states. [2020-09-24 20:38:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:44,502 INFO L93 Difference]: Finished difference Result 497 states and 580 transitions. [2020-09-24 20:38:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:44,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-09-24 20:38:44,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:44,505 INFO L225 Difference]: With dead ends: 497 [2020-09-24 20:38:44,505 INFO L226 Difference]: Without dead ends: 286 [2020-09-24 20:38:44,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 20:38:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-24 20:38:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-09-24 20:38:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-24 20:38:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 326 transitions. [2020-09-24 20:38:44,518 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 326 transitions. Word has length 72 [2020-09-24 20:38:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:44,519 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 326 transitions. [2020-09-24 20:38:44,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 326 transitions. [2020-09-24 20:38:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 20:38:44,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:44,536 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:44,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:38:44,537 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1063922455, now seen corresponding path program 1 times [2020-09-24 20:38:44,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:44,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645985860] [2020-09-24 20:38:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:44,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:44,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 20:38:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 20:38:44,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:38:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 20:38:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:38:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:44,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:44,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:38:44,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:38:44,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645985860] [2020-09-24 20:38:44,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:44,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:38:44,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785892460] [2020-09-24 20:38:44,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:38:44,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:44,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:38:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:38:44,784 INFO L87 Difference]: Start difference. First operand 284 states and 326 transitions. Second operand 4 states. [2020-09-24 20:38:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:44,955 INFO L93 Difference]: Finished difference Result 463 states and 534 transitions. [2020-09-24 20:38:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:38:44,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-09-24 20:38:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:44,958 INFO L225 Difference]: With dead ends: 463 [2020-09-24 20:38:44,958 INFO L226 Difference]: Without dead ends: 220 [2020-09-24 20:38:44,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 20:38:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-24 20:38:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-24 20:38:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-24 20:38:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 249 transitions. [2020-09-24 20:38:44,968 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 249 transitions. Word has length 111 [2020-09-24 20:38:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:44,969 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 249 transitions. [2020-09-24 20:38:44,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:38:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 249 transitions. [2020-09-24 20:38:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 20:38:44,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:38:44,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:38:44,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:38:44,971 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:38:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:38:44,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1519310599, now seen corresponding path program 1 times [2020-09-24 20:38:44,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:38:44,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380971172] [2020-09-24 20:38:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:38:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 20:38:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 20:38:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:38:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:38:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:38:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:38:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:38:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:38:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:38:45,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:38:45,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:38:45,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:38:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:38:45,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:38:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:38:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:38:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:38:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:38:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:38:45,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380971172] [2020-09-24 20:38:45,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:38:45,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:38:45,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826460394] [2020-09-24 20:38:45,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:38:45,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:38:45,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:38:45,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:38:45,335 INFO L87 Difference]: Start difference. First operand 220 states and 249 transitions. Second operand 5 states. [2020-09-24 20:38:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:38:45,755 INFO L93 Difference]: Finished difference Result 228 states and 257 transitions. [2020-09-24 20:38:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:38:45,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-24 20:38:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:38:45,756 INFO L225 Difference]: With dead ends: 228 [2020-09-24 20:38:45,756 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:38:45,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:38:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:38:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:38:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:38:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:38:45,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2020-09-24 20:38:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:38:45,759 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:38:45,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:38:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:38:45,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:38:45,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:38:45,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:38:45,993 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:38:45,993 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:38:45,994 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_flush~0 |old(~m_flush~0)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|)) [2020-09-24 20:38:45,994 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:38:45,994 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:38:45,994 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:38:45,994 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:38:45,994 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:38:45,994 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:38:45,995 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:38:45,995 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:38:45,995 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:38:45,995 INFO L268 CegarLoopResult]: For program point L250(line 250) no Hoare annotation was computed. [2020-09-24 20:38:45,995 INFO L268 CegarLoopResult]: For program point L250-1(line 250) no Hoare annotation was computed. [2020-09-24 20:38:45,995 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-09-24 20:38:45,995 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L118-1(line 118) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L234(line 234) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L234-1(line 234) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-09-24 20:38:45,996 INFO L268 CegarLoopResult]: For program point L86-1(lines 86 101) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L86-2(line 86) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L86-3(line 86) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L202-1(lines 202 217) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L202-2(line 202) no Hoare annotation was computed. [2020-09-24 20:38:45,997 INFO L268 CegarLoopResult]: For program point L202-3(line 202) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L70-1(lines 70 85) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L70-3(line 70) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L318(line 318) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L318-1(lines 318 333) no Hoare annotation was computed. [2020-09-24 20:38:45,998 INFO L268 CegarLoopResult]: For program point L318-2(line 318) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L318-3(line 318) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L186-1(lines 186 201) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L186-2(line 186) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L186-3(line 186) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-24 20:38:45,999 INFO L268 CegarLoopResult]: For program point L54-1(lines 54 69) no Hoare annotation was computed. [2020-09-24 20:38:46,000 INFO L268 CegarLoopResult]: For program point L54-2(line 54) no Hoare annotation was computed. [2020-09-24 20:38:46,000 INFO L268 CegarLoopResult]: For program point L54-3(line 54) no Hoare annotation was computed. [2020-09-24 20:38:46,000 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (or (<= main_~q~0 0) (and (= main_~this_sink~0 0) (= main_~q~0 2)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-09-24 20:38:46,000 INFO L268 CegarLoopResult]: For program point L302(line 302) no Hoare annotation was computed. [2020-09-24 20:38:46,000 INFO L268 CegarLoopResult]: For program point L302-1(lines 302 317) no Hoare annotation was computed. [2020-09-24 20:38:46,000 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L302-2(line 302) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L302-3(line 302) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L170-1(lines 170 185) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L170-2(line 170) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L170-3(line 170) no Hoare annotation was computed. [2020-09-24 20:38:46,001 INFO L268 CegarLoopResult]: For program point L286(line 286) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L286-1(lines 286 301) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L286-2(line 286) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L286-3(line 286) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L154-1(lines 154 169) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-09-24 20:38:46,002 INFO L268 CegarLoopResult]: For program point L154-2(line 154) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L154-3(line 154) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L270-1(lines 270 285) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L270-2(line 270) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L270-3(line 270) no Hoare annotation was computed. [2020-09-24 20:38:46,003 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-09-24 20:38:46,004 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-09-24 20:38:46,004 INFO L268 CegarLoopResult]: For program point L138-1(lines 138 153) no Hoare annotation was computed. [2020-09-24 20:38:46,004 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-09-24 20:38:46,004 INFO L268 CegarLoopResult]: For program point L138-2(line 138) no Hoare annotation was computed. [2020-09-24 20:38:46,004 INFO L268 CegarLoopResult]: For program point L138-3(line 138) no Hoare annotation was computed. [2020-09-24 20:38:46,004 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L254(line 254) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L254-1(lines 254 269) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L254-2(line 254) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L254-3(line 254) no Hoare annotation was computed. [2020-09-24 20:38:46,005 INFO L268 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2020-09-24 20:38:46,006 INFO L268 CegarLoopResult]: For program point L122-1(lines 122 137) no Hoare annotation was computed. [2020-09-24 20:38:46,006 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-09-24 20:38:46,006 INFO L268 CegarLoopResult]: For program point L122-2(line 122) no Hoare annotation was computed. [2020-09-24 20:38:46,006 INFO L268 CegarLoopResult]: For program point L122-3(line 122) no Hoare annotation was computed. [2020-09-24 20:38:46,006 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L238(line 238) no Hoare annotation was computed. [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L238-1(lines 238 253) no Hoare annotation was computed. [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L238-2(line 238) no Hoare annotation was computed. [2020-09-24 20:38:46,007 INFO L268 CegarLoopResult]: For program point L238-3(line 238) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L106-1(lines 106 121) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L106-2(line 106) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L106-3(line 106) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-09-24 20:38:46,008 INFO L268 CegarLoopResult]: For program point L222(line 222) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L222-1(lines 222 237) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L222-2(line 222) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L222-3(line 222) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L206(line 206) no Hoare annotation was computed. [2020-09-24 20:38:46,009 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L322(line 322) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-09-24 20:38:46,010 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 20:38:46,011 INFO L268 CegarLoopResult]: For program point L274(line 274) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L258(line 258) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-24 20:38:46,012 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L242(line 242) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-24 20:38:46,013 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-24 20:38:46,014 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-09-24 20:38:46,014 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-09-24 20:38:46,014 INFO L268 CegarLoopResult]: For program point L226(line 226) no Hoare annotation was computed. [2020-09-24 20:38:46,014 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-09-24 20:38:46,014 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 20:38:46,014 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 20:38:46,015 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-09-24 20:38:46,016 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-09-24 20:38:46,017 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-09-24 20:38:46,017 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-09-24 20:38:46,017 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 20:38:46,017 INFO L268 CegarLoopResult]: For program point L328(line 328) no Hoare annotation was computed. [2020-09-24 20:38:46,017 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-09-24 20:38:46,017 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-24 20:38:46,017 INFO L268 CegarLoopResult]: For program point L312(line 312) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L180(line 180) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L280(line 280) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L264(line 264) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L198(line 198) no Hoare annotation was computed. [2020-09-24 20:38:46,018 INFO L268 CegarLoopResult]: For program point L198-1(line 198) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L248(line 248) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L298(line 298) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L298-1(line 298) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-09-24 20:38:46,019 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L166-1(line 166) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L34-1(lines 34 49) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L34-3(line 34) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-09-24 20:38:46,020 INFO L268 CegarLoopResult]: For program point L282-1(line 282) no Hoare annotation was computed. [2020-09-24 20:38:46,021 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-24 20:38:46,021 INFO L268 CegarLoopResult]: For program point L150-1(line 150) no Hoare annotation was computed. [2020-09-24 20:38:46,021 INFO L268 CegarLoopResult]: For program point L266(line 266) no Hoare annotation was computed. [2020-09-24 20:38:46,021 INFO L268 CegarLoopResult]: For program point L266-1(line 266) no Hoare annotation was computed. [2020-09-24 20:38:46,021 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-24 20:38:46,021 INFO L268 CegarLoopResult]: For program point L134-1(line 134) no Hoare annotation was computed. [2020-09-24 20:38:46,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:38:46 BoogieIcfgContainer [2020-09-24 20:38:46,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:38:46,054 INFO L168 Benchmark]: Toolchain (without parser) took 5967.89 ms. Allocated memory was 146.8 MB in the beginning and 282.1 MB in the end (delta: 135.3 MB). Free memory was 101.6 MB in the beginning and 150.4 MB in the end (delta: -48.8 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:46,055 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:38:46,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.51 ms. Allocated memory is still 146.8 MB. Free memory was 100.9 MB in the beginning and 88.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:46,057 INFO L168 Benchmark]: Boogie Preprocessor took 177.55 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 88.5 MB in the beginning and 180.7 MB in the end (delta: -92.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:46,058 INFO L168 Benchmark]: RCFGBuilder took 647.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 143.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:46,060 INFO L168 Benchmark]: TraceAbstraction took 4699.82 ms. Allocated memory was 203.4 MB in the beginning and 282.1 MB in the end (delta: 78.6 MB). Free memory was 143.7 MB in the beginning and 150.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:38:46,064 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 432.51 ms. Allocated memory is still 146.8 MB. Free memory was 100.9 MB in the beginning and 88.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.55 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 88.5 MB in the beginning and 180.7 MB in the end (delta: -92.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 647.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 143.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4699.82 ms. Allocated memory was 203.4 MB in the beginning and 282.1 MB in the end (delta: 78.6 MB). Free memory was 143.7 MB in the beginning and 150.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (q <= 0 || (this_sink == 0 && q == 2)) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: q <= 0 || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 201 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1281 SDtfs, 1766 SDslu, 85 SDs, 0 SdLazy, 851 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 64 HoareAnnotationTreeSize, 7 FomulaSimplifications, 170 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 461 ConstructedInterpolants, 0 QuantifiedInterpolants, 91627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 130/130 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...