/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:45:05,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:45:05,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:45:05,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:45:05,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:45:05,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:45:05,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:45:05,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:45:05,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:45:05,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:45:05,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:45:05,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:45:05,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:45:05,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:45:05,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:45:05,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:45:05,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:45:05,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:45:05,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:45:05,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:45:05,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:45:05,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:45:05,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:45:05,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:45:05,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:45:05,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:45:05,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:45:05,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:45:05,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:45:05,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:45:05,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:45:05,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:45:05,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:45:05,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:45:05,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:45:05,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:45:05,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:45:05,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:45:05,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:45:05,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:45:05,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:45:05,548 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 [2020-10-12 13:45:05,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:45:05,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:45:05,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:45:05,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:45:05,574 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:45:05,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:45:05,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:45:05,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:45:05,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:45:05,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:45:05,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:45:05,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:45:05,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:45:05,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:45:05,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:45:05,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:45:05,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:45:05,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:45:05,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:45:05,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:45:05,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:45:05,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:45:05,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:45:05,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:45:05,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:45:05,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:45:05,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:45:05,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:45:05,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:45:05,579 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-12 13:45:05,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:45:05,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:45:05,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:45:05,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:45:05,912 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:45:05,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-12 13:45:05,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ceef6a66/bf544c1079714dcd8bd6db53d265492e/FLAG6db18e403 [2020-10-12 13:45:06,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:45:06,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-12 13:45:06,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ceef6a66/bf544c1079714dcd8bd6db53d265492e/FLAG6db18e403 [2020-10-12 13:45:07,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ceef6a66/bf544c1079714dcd8bd6db53d265492e [2020-10-12 13:45:07,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:45:07,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:45:07,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:45:07,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:45:07,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:45:07,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:45:07" (1/1) ... [2020-10-12 13:45:07,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0865a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:07, skipping insertion in model container [2020-10-12 13:45:07,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:45:07" (1/1) ... [2020-10-12 13:45:07,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:45:07,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:45:09,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:45:09,423 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:45:10,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:45:10,157 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:45:10,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10 WrapperNode [2020-10-12 13:45:10,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:45:10,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:45:10,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:45:10,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:45:10,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (1/1) ... [2020-10-12 13:45:10,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:45:10,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:45:10,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:45:10,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:45:10,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (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 [2020-10-12 13:45:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:45:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:45:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:45:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:45:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:45:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:45:10,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:45:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:45:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:45:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:45:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:45:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:45:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:45:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:45:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:45:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:45:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:45:22,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:45:22,432 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:45:22,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:45:22 BoogieIcfgContainer [2020-10-12 13:45:22,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:45:22,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:45:22,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:45:22,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:45:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:45:07" (1/3) ... [2020-10-12 13:45:22,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2099595d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:45:22, skipping insertion in model container [2020-10-12 13:45:22,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:45:10" (2/3) ... [2020-10-12 13:45:22,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2099595d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:45:22, skipping insertion in model container [2020-10-12 13:45:22,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:45:22" (3/3) ... [2020-10-12 13:45:22,457 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2020-10-12 13:45:22,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:45:22,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:45:22,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:45:22,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:45:22,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:45:22,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:45:22,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:45:22,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:45:22,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:45:22,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:45:22,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:45:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:45:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 13:45:22,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:22,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:45:22,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -881047656, now seen corresponding path program 1 times [2020-10-12 13:45:22,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:22,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729109163] [2020-10-12 13:45:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:23,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:23,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:45:23,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-12 13:45:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:45:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:45:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:45:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:45:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:23,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729109163] [2020-10-12 13:45:23,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:23,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:45:23,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146543097] [2020-10-12 13:45:23,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:45:23,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:45:23,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:45:23,972 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-12 13:45:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:45:44,407 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-12 13:45:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:45:44,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-12 13:45:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:45:44,453 INFO L225 Difference]: With dead ends: 4080 [2020-10-12 13:45:44,453 INFO L226 Difference]: Without dead ends: 2872 [2020-10-12 13:45:44,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-12 13:45:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-12 13:45:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-12 13:45:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-12 13:45:44,647 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 71 [2020-10-12 13:45:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:45:44,648 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-12 13:45:44,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:45:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-12 13:45:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 13:45:44,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:44,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:45:44,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:45:44,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1478649949, now seen corresponding path program 1 times [2020-10-12 13:45:44,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:44,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155798750] [2020-10-12 13:45:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:47,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:47,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:45:47,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:45:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-12 13:45:47,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:45:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:45:47,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:47,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:47,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:47,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:45:47,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:45:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:48,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:48,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:45:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 13:45:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:45:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:45:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:48,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155798750] [2020-10-12 13:45:48,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:48,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:45:48,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722825645] [2020-10-12 13:45:48,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:45:48,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:45:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:48,209 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-12 13:46:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:09,532 INFO L93 Difference]: Finished difference Result 5614 states and 9266 transitions. [2020-10-12 13:46:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:46:09,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-12 13:46:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:09,553 INFO L225 Difference]: With dead ends: 5614 [2020-10-12 13:46:09,553 INFO L226 Difference]: Without dead ends: 3686 [2020-10-12 13:46:09,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:46:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2020-10-12 13:46:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3615. [2020-10-12 13:46:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-10-12 13:46:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 5139 transitions. [2020-10-12 13:46:09,661 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 5139 transitions. Word has length 146 [2020-10-12 13:46:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:09,661 INFO L479 AbstractCegarLoop]: Abstraction has 3615 states and 5139 transitions. [2020-10-12 13:46:09,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:46:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 5139 transitions. [2020-10-12 13:46:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 13:46:09,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:09,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:46:09,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:46:09,666 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:09,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:09,667 INFO L82 PathProgramCache]: Analyzing trace with hash -701971687, now seen corresponding path program 1 times [2020-10-12 13:46:09,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:09,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831939841] [2020-10-12 13:46:09,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:11,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:11,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-12 13:46:11,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:46:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-12 13:46:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:46:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:46:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:46:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:11,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:11,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:46:11,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:46:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:11,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:11,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:46:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-12 13:46:11,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:46:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:46:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:46:11,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831939841] [2020-10-12 13:46:11,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:46:11,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:46:11,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74889300] [2020-10-12 13:46:11,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:46:11,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:11,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:46:11,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:46:11,529 INFO L87 Difference]: Start difference. First operand 3615 states and 5139 transitions. Second operand 7 states. [2020-10-12 13:46:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:30,269 INFO L93 Difference]: Finished difference Result 10714 states and 15489 transitions. [2020-10-12 13:46:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:46:30,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-12 13:46:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:30,303 INFO L225 Difference]: With dead ends: 10714 [2020-10-12 13:46:30,303 INFO L226 Difference]: Without dead ends: 7105 [2020-10-12 13:46:30,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:46:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2020-10-12 13:46:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 6978. [2020-10-12 13:46:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2020-10-12 13:46:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 8987 transitions. [2020-10-12 13:46:30,520 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 8987 transitions. Word has length 176 [2020-10-12 13:46:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:30,521 INFO L479 AbstractCegarLoop]: Abstraction has 6978 states and 8987 transitions. [2020-10-12 13:46:30,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:46:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 8987 transitions. [2020-10-12 13:46:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 13:46:30,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:30,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:46:30,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:46:30,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash -948038256, now seen corresponding path program 1 times [2020-10-12 13:46:30,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:30,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123798684] [2020-10-12 13:46:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 13:46:31,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:46:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-12 13:46:31,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:46:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:46:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:31,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:46:31,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:46:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 13:46:31,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:46:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:46:31,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123798684] [2020-10-12 13:46:31,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:31,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:46:31,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173220826] [2020-10-12 13:46:31,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:46:31,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:31,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:46:31,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:46:31,642 INFO L87 Difference]: Start difference. First operand 6978 states and 8987 transitions. Second operand 5 states. [2020-10-12 13:46:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:44,069 INFO L93 Difference]: Finished difference Result 10733 states and 14349 transitions. [2020-10-12 13:46:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:46:44,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-12 13:46:44,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:44,100 INFO L225 Difference]: With dead ends: 10733 [2020-10-12 13:46:44,100 INFO L226 Difference]: Without dead ends: 6978 [2020-10-12 13:46:44,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:46:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2020-10-12 13:46:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6978. [2020-10-12 13:46:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2020-10-12 13:46:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 8979 transitions. [2020-10-12 13:46:44,266 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 8979 transitions. Word has length 200 [2020-10-12 13:46:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:44,268 INFO L479 AbstractCegarLoop]: Abstraction has 6978 states and 8979 transitions. [2020-10-12 13:46:44,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:46:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 8979 transitions. [2020-10-12 13:46:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 13:46:44,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:44,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:46:44,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:46:44,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1941093424, now seen corresponding path program 1 times [2020-10-12 13:46:44,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:44,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930904120] [2020-10-12 13:46:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:48,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:48,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 13:46:48,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:46:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3884 [2020-10-12 13:46:48,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:46:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-12 13:46:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:46:48,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:48,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:46:48,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 13:46:48,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-12 13:46:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 13:46:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:46:49,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930904120] [2020-10-12 13:46:49,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:49,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:46:49,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301619099] [2020-10-12 13:46:49,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:46:49,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:49,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:46:49,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:46:49,172 INFO L87 Difference]: Start difference. First operand 6978 states and 8979 transitions. Second operand 8 states. [2020-10-12 13:46:52,018 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 13:46:52,236 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 13:47:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:47:09,944 INFO L93 Difference]: Finished difference Result 10939 states and 14618 transitions. [2020-10-12 13:47:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:47:09,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 266 [2020-10-12 13:47:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:47:09,972 INFO L225 Difference]: With dead ends: 10939 [2020-10-12 13:47:09,972 INFO L226 Difference]: Without dead ends: 6978 [2020-10-12 13:47:09,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:47:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2020-10-12 13:47:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6978. [2020-10-12 13:47:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2020-10-12 13:47:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 8869 transitions. [2020-10-12 13:47:10,156 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 8869 transitions. Word has length 266 [2020-10-12 13:47:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:47:10,157 INFO L479 AbstractCegarLoop]: Abstraction has 6978 states and 8869 transitions. [2020-10-12 13:47:10,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:47:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 8869 transitions. [2020-10-12 13:47:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-12 13:47:10,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:47:10,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:47:10,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:47:10,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:47:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:47:10,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1351462704, now seen corresponding path program 1 times [2020-10-12 13:47:10,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:47:10,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939963217] [2020-10-12 13:47:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:47:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:13,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:13,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-12 13:47:13,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:47:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2949 [2020-10-12 13:47:13,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:47:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:47:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:47:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:47:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:13,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:13,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:47:13,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:13,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:47:13,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:47:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:47:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:47:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:13,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:13,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:47:13,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:47:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:47:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:47:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:47:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:13,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:47:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:13,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:47:13,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:47:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:47:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-12 13:47:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:47:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 128 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:47:13,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939963217] [2020-10-12 13:47:13,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:47:13,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:47:13,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894965325] [2020-10-12 13:47:13,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:47:13,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:47:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:47:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:47:13,869 INFO L87 Difference]: Start difference. First operand 6978 states and 8869 transitions. Second operand 7 states. [2020-10-12 13:47:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:47:33,805 INFO L93 Difference]: Finished difference Result 13262 states and 17102 transitions. [2020-10-12 13:47:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:47:33,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-12 13:47:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:47:33,827 INFO L225 Difference]: With dead ends: 13262 [2020-10-12 13:47:33,827 INFO L226 Difference]: Without dead ends: 7093 [2020-10-12 13:47:33,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:47:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2020-10-12 13:47:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 7004. [2020-10-12 13:47:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7004 states. [2020-10-12 13:47:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 8914 transitions. [2020-10-12 13:47:33,968 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 8914 transitions. Word has length 269 [2020-10-12 13:47:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:47:33,969 INFO L479 AbstractCegarLoop]: Abstraction has 7004 states and 8914 transitions. [2020-10-12 13:47:33,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:47:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 8914 transitions. [2020-10-12 13:47:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-12 13:47:33,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:47:33,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:47:33,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:47:33,975 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:47:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:47:33,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1896203904, now seen corresponding path program 1 times [2020-10-12 13:47:33,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:47:33,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683169817] [2020-10-12 13:47:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:47:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-12 13:47:35,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:47:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-12 13:47:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:47:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-12 13:47:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:47:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:47:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:47:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:47:35,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:47:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:47:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:47:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:47:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:47:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:47:35,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:47:35,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:47:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:47:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:47:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:47:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:47:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:47:35,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:47:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 13:47:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 13:47:35,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683169817] [2020-10-12 13:47:35,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:47:35,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:47:35,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484139861] [2020-10-12 13:47:35,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:47:35,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:47:35,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:47:35,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:47:35,712 INFO L87 Difference]: Start difference. First operand 7004 states and 8914 transitions. Second operand 5 states. [2020-10-12 13:48:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:48:04,376 INFO L93 Difference]: Finished difference Result 17357 states and 23121 transitions. [2020-10-12 13:48:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:48:04,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-12 13:48:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:48:04,419 INFO L225 Difference]: With dead ends: 17357 [2020-10-12 13:48:04,420 INFO L226 Difference]: Without dead ends: 11162 [2020-10-12 13:48:04,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:48:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11162 states. [2020-10-12 13:48:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11162 to 11098. [2020-10-12 13:48:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11098 states. [2020-10-12 13:48:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11098 states to 11098 states and 14076 transitions. [2020-10-12 13:48:04,648 INFO L78 Accepts]: Start accepts. Automaton has 11098 states and 14076 transitions. Word has length 276 [2020-10-12 13:48:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:48:04,649 INFO L479 AbstractCegarLoop]: Abstraction has 11098 states and 14076 transitions. [2020-10-12 13:48:04,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:48:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 11098 states and 14076 transitions. [2020-10-12 13:48:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-12 13:48:04,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:48:04,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:48:04,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:48:04,655 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:48:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:48:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash 193856068, now seen corresponding path program 1 times [2020-10-12 13:48:04,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:48:04,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163173378] [2020-10-12 13:48:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:48:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:06,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:06,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-12 13:48:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:48:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-12 13:48:06,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-12 13:48:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:48:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:48:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:06,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:06,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:48:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:48:06,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:48:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:48:06,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:06,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:48:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:48:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:48:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:48:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:48:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 13:48:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:48:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:48:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 13:48:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:48:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:48:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 13:48:06,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163173378] [2020-10-12 13:48:06,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:48:06,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:48:06,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771240825] [2020-10-12 13:48:06,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:48:06,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:48:06,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:48:06,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:48:06,606 INFO L87 Difference]: Start difference. First operand 11098 states and 14076 transitions. Second operand 5 states. [2020-10-12 13:48:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:48:30,682 INFO L93 Difference]: Finished difference Result 26344 states and 34982 transitions. [2020-10-12 13:48:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:48:30,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 278 [2020-10-12 13:48:30,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:48:30,754 INFO L225 Difference]: With dead ends: 26344 [2020-10-12 13:48:30,755 INFO L226 Difference]: Without dead ends: 16055 [2020-10-12 13:48:30,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:48:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16055 states. [2020-10-12 13:48:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16055 to 16036. [2020-10-12 13:48:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16036 states. [2020-10-12 13:48:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16036 states to 16036 states and 19984 transitions. [2020-10-12 13:48:31,118 INFO L78 Accepts]: Start accepts. Automaton has 16036 states and 19984 transitions. Word has length 278 [2020-10-12 13:48:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:48:31,119 INFO L479 AbstractCegarLoop]: Abstraction has 16036 states and 19984 transitions. [2020-10-12 13:48:31,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:48:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 16036 states and 19984 transitions. [2020-10-12 13:48:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 13:48:31,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:48:31,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:48:31,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:48:31,127 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:48:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:48:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash -70362251, now seen corresponding path program 1 times [2020-10-12 13:48:31,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:48:31,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866278831] [2020-10-12 13:48:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:48:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:33,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 13:48:33,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:48:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2656 [2020-10-12 13:48:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:48:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:48:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-12 13:48:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:48:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:48:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:34,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:34,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:34,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:48:34,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:48:34,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:48:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:48:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:48:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:48:34,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:48:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 13:48:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:48:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:48:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:48:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:34,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 13:48:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 13:48:34,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:48:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:48:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:48:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 13:48:34,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866278831] [2020-10-12 13:48:34,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:48:34,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:48:34,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391882236] [2020-10-12 13:48:34,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:48:34,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:48:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:48:34,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:48:34,891 INFO L87 Difference]: Start difference. First operand 16036 states and 19984 transitions. Second operand 7 states.