/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem12_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:20:57,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:20:57,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:20:57,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:20:57,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:20:57,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:20:57,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:20:57,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:20:57,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:20:57,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:20:57,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:20:57,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:20:57,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:20:57,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:20:57,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:20:57,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:20:57,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:20:57,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:20:57,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:20:57,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:20:57,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:20:57,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:20:57,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:20:57,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:20:57,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:20:57,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:20:57,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:20:57,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:20:57,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:20:57,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:20:57,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:20:57,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:20:57,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:20:57,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:20:57,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:20:57,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:20:57,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:20:57,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:20:57,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:20:57,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:20:57,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:20:57,455 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 [2020-10-14 21:20:57,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:20:57,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:20:57,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:20:57,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:20:57,484 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:20:57,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:20:57,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:20:57,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:20:57,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:20:57,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:20:57,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:20:57,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:20:57,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:20:57,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:20:57,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:20:57,486 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:20:57,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:20:57,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:20:57,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:20:57,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:20:57,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:20:57,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:20:57,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:20:57,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:20:57,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:20:57,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:20:57,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:20:57,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:20:57,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:20:57,490 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:20:57,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:20:57,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:20:57,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:20:57,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:20:57,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:20:57,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-14 21:20:57,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e23d8efd3/cb776339692b4756a4bf2a4c0e3e07e3/FLAGdf46c5f80 [2020-10-14 21:20:58,971 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:20:58,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-14 21:20:59,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e23d8efd3/cb776339692b4756a4bf2a4c0e3e07e3/FLAGdf46c5f80 [2020-10-14 21:20:59,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e23d8efd3/cb776339692b4756a4bf2a4c0e3e07e3 [2020-10-14 21:20:59,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:20:59,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:20:59,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:20:59,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:20:59,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:20:59,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:20:59" (1/1) ... [2020-10-14 21:20:59,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36801391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:59, skipping insertion in model container [2020-10-14 21:20:59,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:20:59" (1/1) ... [2020-10-14 21:20:59,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:20:59,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:21:01,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:21:01,613 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:21:02,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:21:02,600 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:21:02,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02 WrapperNode [2020-10-14 21:21:02,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:21:02,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:21:02,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:21:02,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:21:02,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:02,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:02,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:02,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:02,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:02,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:02,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (1/1) ... [2020-10-14 21:21:03,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:21:03,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:21:03,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:21:03,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:21:03,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (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 [2020-10-14 21:21:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:21:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:21:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:21:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:21:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:21:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:21:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:21:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:21:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:21:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:21:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:21:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:21:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:21:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:21:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:21:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:21:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:21:09,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:21:09,281 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:21:09,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:09 BoogieIcfgContainer [2020-10-14 21:21:09,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:21:09,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:21:09,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:21:09,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:21:09,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:20:59" (1/3) ... [2020-10-14 21:21:09,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683899d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:09, skipping insertion in model container [2020-10-14 21:21:09,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:02" (2/3) ... [2020-10-14 21:21:09,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683899d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:09, skipping insertion in model container [2020-10-14 21:21:09,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:09" (3/3) ... [2020-10-14 21:21:09,326 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label57.c [2020-10-14 21:21:09,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:21:09,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:21:09,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:21:09,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:21:09,415 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:21:09,415 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:21:09,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:21:09,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:21:09,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:21:09,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:21:09,416 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:21:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:21:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 21:21:09,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:09,491 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] [2020-10-14 21:21:09,492 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1218214590, now seen corresponding path program 1 times [2020-10-14 21:21:09,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:09,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110194834] [2020-10-14 21:21:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:10,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:10,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 21:21:10,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 21:21:10,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:10,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:21:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:21:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 21:21:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:21:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:10,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:10,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:10,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:21:10,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:10,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:21:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:21:10,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110194834] [2020-10-14 21:21:10,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:21:10,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:21:10,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922677974] [2020-10-14 21:21:10,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:21:10,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:10,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:21:10,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:21:10,511 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:21:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:24,159 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-14 21:21:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:21:24,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-14 21:21:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:24,219 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 21:21:24,219 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 21:21:24,232 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 [2020-10-14 21:21:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 21:21:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 21:21:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 21:21:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-14 21:21:24,443 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 43 [2020-10-14 21:21:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:24,446 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-14 21:21:24,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:21:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-14 21:21:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 21:21:24,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:24,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:21:24,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:21:24,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:24,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1867365818, now seen corresponding path program 1 times [2020-10-14 21:21:24,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:24,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744603672] [2020-10-14 21:21:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:26,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:26,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 21:21:26,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:21:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-14 21:21:26,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:26,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:21:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:21:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:21:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:21:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:26,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:26,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:21:26,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:26,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:21:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:21:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:26,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:21:26,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:21:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 21:21:26,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:26,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:21:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:21:26,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744603672] [2020-10-14 21:21:26,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:21:26,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:21:26,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610967231] [2020-10-14 21:21:26,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:21:26,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:26,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:21:26,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:21:26,703 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 7 states. [2020-10-14 21:21:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:39,899 INFO L93 Difference]: Finished difference Result 7141 states and 11906 transitions. [2020-10-14 21:21:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:21:39,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-14 21:21:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:39,938 INFO L225 Difference]: With dead ends: 7141 [2020-10-14 21:21:39,939 INFO L226 Difference]: Without dead ends: 4816 [2020-10-14 21:21:39,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:21:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2020-10-14 21:21:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4733. [2020-10-14 21:21:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4733 states. [2020-10-14 21:21:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 6865 transitions. [2020-10-14 21:21:40,172 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 6865 transitions. Word has length 121 [2020-10-14 21:21:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:40,173 INFO L479 AbstractCegarLoop]: Abstraction has 4733 states and 6865 transitions. [2020-10-14 21:21:40,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:21:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 6865 transitions. [2020-10-14 21:21:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 21:21:40,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:40,182 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:21:40,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:21:40,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash 608178230, now seen corresponding path program 1 times [2020-10-14 21:21:40,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:40,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002462837] [2020-10-14 21:21:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:40,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:43,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:43,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 21:21:43,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:21:43,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3702 [2020-10-14 21:21:43,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:43,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:21:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:21:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:21:43,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:44,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:44,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:44,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:21:44,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:44,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:21:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:44,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:44,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:21:44,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:21:44,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 21:21:44,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:44,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:44,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:21:44,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 21:21:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:44,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:44,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:21:44,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:44,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:21:44,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:44,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:44,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:44,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:21:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:21:44,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002462837] [2020-10-14 21:21:44,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:21:44,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:21:44,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003061797] [2020-10-14 21:21:44,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:21:44,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:44,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:21:44,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:21:44,631 INFO L87 Difference]: Start difference. First operand 4733 states and 6865 transitions. Second operand 9 states. [2020-10-14 21:21:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:59,466 INFO L93 Difference]: Finished difference Result 14971 states and 24287 transitions. [2020-10-14 21:21:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 21:21:59,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-14 21:21:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:59,545 INFO L225 Difference]: With dead ends: 14971 [2020-10-14 21:21:59,546 INFO L226 Difference]: Without dead ends: 10244 [2020-10-14 21:21:59,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-14 21:21:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10244 states. [2020-10-14 21:22:00,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10244 to 9791. [2020-10-14 21:22:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2020-10-14 21:22:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 13074 transitions. [2020-10-14 21:22:00,043 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 13074 transitions. Word has length 195 [2020-10-14 21:22:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:00,047 INFO L479 AbstractCegarLoop]: Abstraction has 9791 states and 13074 transitions. [2020-10-14 21:22:00,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:22:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 13074 transitions. [2020-10-14 21:22:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 21:22:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:00,052 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:22:00,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:22:00,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1375118935, now seen corresponding path program 1 times [2020-10-14 21:22:00,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:00,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145517481] [2020-10-14 21:22:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:00,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 21:22:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:22:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2772 [2020-10-14 21:22:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:22:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 21:22:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 59 [2020-10-14 21:22:03,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:03,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:03,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:03,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:22:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:03,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:03,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:03,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:22:03,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:22:03,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:03,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:22:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:22:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:03,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:03,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:22:03,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:22:03,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:03,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:22:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 21:22:03,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145517481] [2020-10-14 21:22:03,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:03,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:22:03,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083171694] [2020-10-14 21:22:03,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:03,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:03,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:03,505 INFO L87 Difference]: Start difference. First operand 9791 states and 13074 transitions. Second operand 7 states. [2020-10-14 21:22:17,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:17,908 INFO L93 Difference]: Finished difference Result 28837 states and 39745 transitions. [2020-10-14 21:22:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:22:17,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-14 21:22:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:17,981 INFO L225 Difference]: With dead ends: 28837 [2020-10-14 21:22:17,982 INFO L226 Difference]: Without dead ends: 19052 [2020-10-14 21:22:18,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:22:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19052 states. [2020-10-14 21:22:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19052 to 17224. [2020-10-14 21:22:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17224 states. [2020-10-14 21:22:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17224 states to 17224 states and 22443 transitions. [2020-10-14 21:22:18,490 INFO L78 Accepts]: Start accepts. Automaton has 17224 states and 22443 transitions. Word has length 198 [2020-10-14 21:22:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:18,491 INFO L479 AbstractCegarLoop]: Abstraction has 17224 states and 22443 transitions. [2020-10-14 21:22:18,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:22:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17224 states and 22443 transitions. [2020-10-14 21:22:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 21:22:18,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:18,498 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:22:18,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:22:18,499 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:18,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1261408785, now seen corresponding path program 1 times [2020-10-14 21:22:18,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:18,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450190547] [2020-10-14 21:22:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 21:22:19,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:22:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-14 21:22:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:19,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:22:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:22:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:22:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:19,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:19,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:19,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:22:19,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:22:19,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:19,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:22:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:22:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 21:22:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 21:22:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:19,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:22:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:22:20,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450190547] [2020-10-14 21:22:20,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:20,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:22:20,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94949435] [2020-10-14 21:22:20,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:22:20,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:20,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:22:20,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:22:20,260 INFO L87 Difference]: Start difference. First operand 17224 states and 22443 transitions. Second operand 8 states. [2020-10-14 21:22:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:41,169 INFO L93 Difference]: Finished difference Result 51848 states and 72343 transitions. [2020-10-14 21:22:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:22:41,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2020-10-14 21:22:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:41,291 INFO L225 Difference]: With dead ends: 51848 [2020-10-14 21:22:41,291 INFO L226 Difference]: Without dead ends: 31431 [2020-10-14 21:22:41,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:22:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31431 states. [2020-10-14 21:22:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31431 to 31348. [2020-10-14 21:22:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31348 states. [2020-10-14 21:22:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31348 states to 31348 states and 40563 transitions. [2020-10-14 21:22:42,065 INFO L78 Accepts]: Start accepts. Automaton has 31348 states and 40563 transitions. Word has length 242 [2020-10-14 21:22:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:42,065 INFO L479 AbstractCegarLoop]: Abstraction has 31348 states and 40563 transitions. [2020-10-14 21:22:42,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:22:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 31348 states and 40563 transitions. [2020-10-14 21:22:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 21:22:42,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:42,072 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:22:42,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:22:42,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -917744058, now seen corresponding path program 1 times [2020-10-14 21:22:42,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:42,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143001538] [2020-10-14 21:22:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:43,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:44,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 21:22:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:22:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1874 [2020-10-14 21:22:44,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:44,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:22:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:22:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:44,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:44,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:44,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:22:44,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:44,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:44,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:44,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:44,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:22:44,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:44,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:22:44,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:44,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:22:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:44,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:22:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:44,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:44,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:22:44,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 21:22:44,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:44,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:44,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:44,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:44,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:22:44,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:22:44,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143001538] [2020-10-14 21:22:44,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:44,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:22:44,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241677548] [2020-10-14 21:22:44,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:44,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:44,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:44,698 INFO L87 Difference]: Start difference. First operand 31348 states and 40563 transitions. Second operand 7 states. [2020-10-14 21:22:48,543 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-14 21:23:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:01,161 INFO L93 Difference]: Finished difference Result 90908 states and 122394 transitions. [2020-10-14 21:23:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:23:01,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-14 21:23:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:01,347 INFO L225 Difference]: With dead ends: 90908 [2020-10-14 21:23:01,347 INFO L226 Difference]: Without dead ends: 59566 [2020-10-14 21:23:01,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:23:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59566 states. [2020-10-14 21:23:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59566 to 58702. [2020-10-14 21:23:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58702 states. [2020-10-14 21:23:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58702 states to 58702 states and 77076 transitions. [2020-10-14 21:23:02,535 INFO L78 Accepts]: Start accepts. Automaton has 58702 states and 77076 transitions. Word has length 303 [2020-10-14 21:23:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:02,536 INFO L479 AbstractCegarLoop]: Abstraction has 58702 states and 77076 transitions. [2020-10-14 21:23:02,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:02,536 INFO L276 IsEmpty]: Start isEmpty. Operand 58702 states and 77076 transitions. [2020-10-14 21:23:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-14 21:23:02,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:02,547 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:23:02,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:23:02,548 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash -313857930, now seen corresponding path program 1 times [2020-10-14 21:23:02,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:02,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856648399] [2020-10-14 21:23:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:02,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:07,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 21:23:07,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:23:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 21:23:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:07,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 21:23:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 21:23:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:07,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:23:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:07,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:23:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:23:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:07,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:08,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:08,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:23:08,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:23:08,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:08,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 21:23:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:23:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:08,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:08,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:08,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 21:23:08,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 21:23:08,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:08,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:23:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:23:09,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856648399] [2020-10-14 21:23:09,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:23:09,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:23:09,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928096183] [2020-10-14 21:23:09,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:23:09,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:23:09,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:23:09,013 INFO L87 Difference]: Start difference. First operand 58702 states and 77076 transitions. Second operand 8 states. [2020-10-14 21:23:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:39,276 INFO L93 Difference]: Finished difference Result 137856 states and 185172 transitions. [2020-10-14 21:23:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:23:39,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 345 [2020-10-14 21:23:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:39,622 INFO L225 Difference]: With dead ends: 137856 [2020-10-14 21:23:39,623 INFO L226 Difference]: Without dead ends: 79927 [2020-10-14 21:23:39,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:23:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79927 states. [2020-10-14 21:23:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79927 to 79859. [2020-10-14 21:23:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79859 states. [2020-10-14 21:23:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79859 states to 79859 states and 100010 transitions. [2020-10-14 21:23:41,949 INFO L78 Accepts]: Start accepts. Automaton has 79859 states and 100010 transitions. Word has length 345 [2020-10-14 21:23:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:41,950 INFO L479 AbstractCegarLoop]: Abstraction has 79859 states and 100010 transitions. [2020-10-14 21:23:41,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:23:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 79859 states and 100010 transitions. [2020-10-14 21:23:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 21:23:41,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:41,966 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:23:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:23:41,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1638376001, now seen corresponding path program 1 times [2020-10-14 21:23:41,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:41,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216677154] [2020-10-14 21:23:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:42,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:47,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 21:23:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:23:47,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 21:23:47,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:47,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:23:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:47,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:47,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:47,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:47,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:23:47,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:47,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:47,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:47,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:23:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 21:23:47,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:47,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:23:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:23:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:48,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:23:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:23:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:23:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:23:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:23:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 21:23:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:48,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:48,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 21:23:48,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:23:48,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:48,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:23:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 21:23:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:23:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 108 proven. 167 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 21:23:48,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216677154] [2020-10-14 21:23:48,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:23:48,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:23:48,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632552108] [2020-10-14 21:23:48,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:48,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:48,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:48,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:48,828 INFO L87 Difference]: Start difference. First operand 79859 states and 100010 transitions. Second operand 7 states. [2020-10-14 21:24:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:09,246 INFO L93 Difference]: Finished difference Result 151233 states and 186137 transitions. [2020-10-14 21:24:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:24:09,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-14 21:24:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:09,591 INFO L225 Difference]: With dead ends: 151233 [2020-10-14 21:24:09,591 INFO L226 Difference]: Without dead ends: 79972 [2020-10-14 21:24:09,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:24:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79972 states. [2020-10-14 21:24:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79972 to 79084. [2020-10-14 21:24:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79084 states. [2020-10-14 21:24:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79084 states to 79084 states and 95374 transitions. [2020-10-14 21:24:11,203 INFO L78 Accepts]: Start accepts. Automaton has 79084 states and 95374 transitions. Word has length 368 [2020-10-14 21:24:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:11,204 INFO L479 AbstractCegarLoop]: Abstraction has 79084 states and 95374 transitions. [2020-10-14 21:24:11,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 79084 states and 95374 transitions. [2020-10-14 21:24:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-14 21:24:11,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:11,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:24:11,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:24:11,218 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1981948314, now seen corresponding path program 1 times [2020-10-14 21:24:11,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:11,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274940667] [2020-10-14 21:24:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:13,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:13,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 21:24:13,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1911 [2020-10-14 21:24:13,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:13,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:24:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-14 21:24:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:24:13,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:13,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:13,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:13,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:13,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:13,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:24:13,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:13,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:24:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 21:24:13,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:13,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:24:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:13,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:24:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 21:24:13,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:13,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:24:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:24:13,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:24:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:13,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:24:13,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 21:24:13,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:13,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:24:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 21:24:14,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274940667] [2020-10-14 21:24:14,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:14,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:24:14,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856586829] [2020-10-14 21:24:14,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:24:14,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:14,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:24:14,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:24:14,096 INFO L87 Difference]: Start difference. First operand 79084 states and 95374 transitions. Second operand 6 states.