/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:45:01,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:45:01,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:45:01,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:45:01,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:45:01,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:45:01,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:45:01,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:45:01,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:45:01,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:45:01,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:45:01,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:45:01,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:45:01,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:45:01,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:45:01,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:45:01,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:45:01,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:45:01,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:45:01,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:45:01,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:45:01,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:45:01,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:45:01,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:45:01,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:45:01,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:45:01,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:45:01,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:45:01,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:45:01,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:45:01,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:45:01,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:45:01,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:45:01,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:45:01,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:45:01,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:45:01,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:45:01,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:45:01,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:45:01,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:45:01,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:45:01,599 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 [2020-10-13 08:45:01,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:45:01,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:45:01,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:45:01,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:45:01,647 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:45:01,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:45:01,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:45:01,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:45:01,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:45:01,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:45:01,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:45:01,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:45:01,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:45:01,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:45:01,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:45:01,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:45:01,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:45:01,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:45:01,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:45:01,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:45:01,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:45:01,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:45:01,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:45:01,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:45:01,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:45:01,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:45:01,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:45:01,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:45:01,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:45:01,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:45:01,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:45:01,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:45:01,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:45:01,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:45:01,968 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:45:01,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-13 08:45:02,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22fe2dde8/7f76810ac8714f818625b916bca9d8c9/FLAG799b14de8 [2020-10-13 08:45:02,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:45:02,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-13 08:45:02,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22fe2dde8/7f76810ac8714f818625b916bca9d8c9/FLAG799b14de8 [2020-10-13 08:45:02,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22fe2dde8/7f76810ac8714f818625b916bca9d8c9 [2020-10-13 08:45:02,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:45:02,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:45:02,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:45:02,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:45:02,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:45:02,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:45:02" (1/1) ... [2020-10-13 08:45:02,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:02, skipping insertion in model container [2020-10-13 08:45:02,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:45:02" (1/1) ... [2020-10-13 08:45:02,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:45:03,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:45:04,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:45:04,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:45:05,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:45:05,583 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:45:05,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05 WrapperNode [2020-10-13 08:45:05,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:45:05,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:45:05,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:45:05,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:45:05,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (1/1) ... [2020-10-13 08:45:05,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:45:05,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:45:05,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:45:05,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:45:05,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (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 [2020-10-13 08:45:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:45:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:45:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:45:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:45:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:45:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:45:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:45:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:45:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:45:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:45:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:45:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:45:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:45:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:45:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:45:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:45:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:45:17,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:45:17,350 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:45:17,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:45:17 BoogieIcfgContainer [2020-10-13 08:45:17,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:45:17,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:45:17,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:45:17,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:45:17,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:45:02" (1/3) ... [2020-10-13 08:45:17,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab8399b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:45:17, skipping insertion in model container [2020-10-13 08:45:17,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:05" (2/3) ... [2020-10-13 08:45:17,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab8399b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:45:17, skipping insertion in model container [2020-10-13 08:45:17,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:45:17" (3/3) ... [2020-10-13 08:45:17,379 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2020-10-13 08:45:17,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:45:17,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:45:17,416 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:45:17,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:45:17,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:45:17,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:45:17,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:45:17,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:45:17,449 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:45:17,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:45:17,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:45:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:45:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 08:45:17,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:17,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:17,506 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1177685569, now seen corresponding path program 1 times [2020-10-13 08:45:17,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:17,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522295806] [2020-10-13 08:45:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:18,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 08:45:18,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:18,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-13 08:45:18,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:45:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:45:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 08:45:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:45:18,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:18,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:18,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 08:45:18,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:18,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:18,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522295806] [2020-10-13 08:45:18,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:45:18,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:45:18,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477163659] [2020-10-13 08:45:18,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:18,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:18,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:18,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:18,399 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-13 08:45:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:39,261 INFO L93 Difference]: Finished difference Result 4149 states and 7720 transitions. [2020-10-13 08:45:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:45:39,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-13 08:45:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:39,298 INFO L225 Difference]: With dead ends: 4149 [2020-10-13 08:45:39,298 INFO L226 Difference]: Without dead ends: 2932 [2020-10-13 08:45:39,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:45:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-10-13 08:45:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2811. [2020-10-13 08:45:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2020-10-13 08:45:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4741 transitions. [2020-10-13 08:45:39,511 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4741 transitions. Word has length 52 [2020-10-13 08:45:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:39,515 INFO L479 AbstractCegarLoop]: Abstraction has 2811 states and 4741 transitions. [2020-10-13 08:45:39,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4741 transitions. [2020-10-13 08:45:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:45:39,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:39,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:39,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:45:39,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:39,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1651499399, now seen corresponding path program 1 times [2020-10-13 08:45:39,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:39,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88555234] [2020-10-13 08:45:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:40,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:40,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:45:40,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:45:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-13 08:45:40,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 08:45:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 08:45:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:40,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:40,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:41,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:45:41,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:45:41,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:45:41,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:41,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88555234] [2020-10-13 08:45:41,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:41,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:45:41,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239279364] [2020-10-13 08:45:41,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:41,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:41,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:41,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:41,118 INFO L87 Difference]: Start difference. First operand 2811 states and 4741 transitions. Second operand 5 states. [2020-10-13 08:46:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:00,920 INFO L93 Difference]: Finished difference Result 8087 states and 13834 transitions. [2020-10-13 08:46:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:00,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:46:00,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:00,953 INFO L225 Difference]: With dead ends: 8087 [2020-10-13 08:46:00,954 INFO L226 Difference]: Without dead ends: 5282 [2020-10-13 08:46:00,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2020-10-13 08:46:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 5277. [2020-10-13 08:46:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5277 states. [2020-10-13 08:46:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 8233 transitions. [2020-10-13 08:46:01,112 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 8233 transitions. Word has length 137 [2020-10-13 08:46:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:01,115 INFO L479 AbstractCegarLoop]: Abstraction has 5277 states and 8233 transitions. [2020-10-13 08:46:01,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 8233 transitions. [2020-10-13 08:46:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 08:46:01,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:01,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:01,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:46:01,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:01,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1315380295, now seen corresponding path program 1 times [2020-10-13 08:46:01,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:01,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92401638] [2020-10-13 08:46:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:46:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-13 08:46:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:46:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 08:46:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:02,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:02,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:46:02,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:02,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:02,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:46:02,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:46:02,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:46:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:02,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92401638] [2020-10-13 08:46:02,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:02,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:02,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110717217] [2020-10-13 08:46:02,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:02,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:02,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:02,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:02,714 INFO L87 Difference]: Start difference. First operand 5277 states and 8233 transitions. Second operand 5 states. [2020-10-13 08:46:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:18,866 INFO L93 Difference]: Finished difference Result 12265 states and 20032 transitions. [2020-10-13 08:46:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:18,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 08:46:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:18,910 INFO L225 Difference]: With dead ends: 12265 [2020-10-13 08:46:18,911 INFO L226 Difference]: Without dead ends: 8638 [2020-10-13 08:46:18,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8638 states. [2020-10-13 08:46:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8638 to 8625. [2020-10-13 08:46:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8625 states. [2020-10-13 08:46:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8625 states to 8625 states and 12333 transitions. [2020-10-13 08:46:19,153 INFO L78 Accepts]: Start accepts. Automaton has 8625 states and 12333 transitions. Word has length 153 [2020-10-13 08:46:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:19,154 INFO L479 AbstractCegarLoop]: Abstraction has 8625 states and 12333 transitions. [2020-10-13 08:46:19,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 8625 states and 12333 transitions. [2020-10-13 08:46:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 08:46:19,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:19,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:19,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:46:19,158 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:19,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1139497185, now seen corresponding path program 1 times [2020-10-13 08:46:19,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:19,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42678036] [2020-10-13 08:46:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:20,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:20,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:46:20,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-10-13 08:46:20,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:46:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:46:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:20,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:20,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:20,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:46:20,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:20,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:20,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:46:20,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:46:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:46:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:20,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42678036] [2020-10-13 08:46:20,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:20,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:20,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268420900] [2020-10-13 08:46:20,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:20,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:20,868 INFO L87 Difference]: Start difference. First operand 8625 states and 12333 transitions. Second operand 5 states. [2020-10-13 08:46:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:35,127 INFO L93 Difference]: Finished difference Result 15627 states and 22432 transitions. [2020-10-13 08:46:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:35,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 08:46:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:35,175 INFO L225 Difference]: With dead ends: 15627 [2020-10-13 08:46:35,176 INFO L226 Difference]: Without dead ends: 8629 [2020-10-13 08:46:35,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:35,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8629 states. [2020-10-13 08:46:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8629 to 8625. [2020-10-13 08:46:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8625 states. [2020-10-13 08:46:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8625 states to 8625 states and 12330 transitions. [2020-10-13 08:46:35,374 INFO L78 Accepts]: Start accepts. Automaton has 8625 states and 12330 transitions. Word has length 154 [2020-10-13 08:46:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:35,375 INFO L479 AbstractCegarLoop]: Abstraction has 8625 states and 12330 transitions. [2020-10-13 08:46:35,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8625 states and 12330 transitions. [2020-10-13 08:46:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 08:46:35,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:35,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:35,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:46:35,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1320893455, now seen corresponding path program 1 times [2020-10-13 08:46:35,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:35,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426411103] [2020-10-13 08:46:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:36,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 08:46:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-13 08:46:36,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-13 08:46:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 08:46:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:36,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:36,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:36,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:46:36,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:36,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:36,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:36,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:46:36,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:46:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:46:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:36,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426411103] [2020-10-13 08:46:36,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:36,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:36,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940028955] [2020-10-13 08:46:36,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:36,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:36,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:36,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:36,932 INFO L87 Difference]: Start difference. First operand 8625 states and 12330 transitions. Second operand 5 states. [2020-10-13 08:46:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:54,588 INFO L93 Difference]: Finished difference Result 25391 states and 37124 transitions. [2020-10-13 08:46:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:54,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 08:46:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:54,645 INFO L225 Difference]: With dead ends: 25391 [2020-10-13 08:46:54,646 INFO L226 Difference]: Without dead ends: 16772 [2020-10-13 08:46:54,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16772 states. [2020-10-13 08:46:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16772 to 16756. [2020-10-13 08:46:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16756 states. [2020-10-13 08:46:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16756 states to 16756 states and 22730 transitions. [2020-10-13 08:46:54,988 INFO L78 Accepts]: Start accepts. Automaton has 16756 states and 22730 transitions. Word has length 165 [2020-10-13 08:46:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:54,988 INFO L479 AbstractCegarLoop]: Abstraction has 16756 states and 22730 transitions. [2020-10-13 08:46:54,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 16756 states and 22730 transitions. [2020-10-13 08:46:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 08:46:54,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:54,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:54,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:46:54,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 799839160, now seen corresponding path program 1 times [2020-10-13 08:46:54,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:54,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300530811] [2020-10-13 08:46:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:55,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:46:55,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-13 08:46:55,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:46:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:46:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:46:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:55,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:46:55,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:46:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:55,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:55,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:46:55,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:55,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 08:46:55,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:55,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 08:46:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:55,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300530811] [2020-10-13 08:46:55,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:46:55,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:46:55,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666184841] [2020-10-13 08:46:55,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:46:55,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:55,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:46:55,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:46:55,977 INFO L87 Difference]: Start difference. First operand 16756 states and 22730 transitions. Second operand 7 states. [2020-10-13 08:47:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:16,004 INFO L93 Difference]: Finished difference Result 33784 states and 46474 transitions. [2020-10-13 08:47:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:47:16,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-13 08:47:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:16,071 INFO L225 Difference]: With dead ends: 33784 [2020-10-13 08:47:16,072 INFO L226 Difference]: Without dead ends: 17034 [2020-10-13 08:47:16,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:47:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17034 states. [2020-10-13 08:47:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17034 to 16952. [2020-10-13 08:47:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16952 states. [2020-10-13 08:47:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16952 states to 16952 states and 21318 transitions. [2020-10-13 08:47:17,479 INFO L78 Accepts]: Start accepts. Automaton has 16952 states and 21318 transitions. Word has length 173 [2020-10-13 08:47:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:17,479 INFO L479 AbstractCegarLoop]: Abstraction has 16952 states and 21318 transitions. [2020-10-13 08:47:17,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:47:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 16952 states and 21318 transitions. [2020-10-13 08:47:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 08:47:17,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:17,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:17,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:47:17,486 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:17,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1424787660, now seen corresponding path program 1 times [2020-10-13 08:47:17,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:17,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915979232] [2020-10-13 08:47:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 08:47:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-13 08:47:18,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-13 08:47:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 08:47:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:18,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:18,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:18,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:18,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:18,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:18,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:18,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 08:47:18,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:47:18,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 08:47:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:47:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:47:19,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915979232] [2020-10-13 08:47:19,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:19,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:47:19,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921418205] [2020-10-13 08:47:19,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:47:19,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:47:19,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:47:19,084 INFO L87 Difference]: Start difference. First operand 16952 states and 21318 transitions. Second operand 5 states. [2020-10-13 08:47:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:36,738 INFO L93 Difference]: Finished difference Result 47854 states and 61771 transitions. [2020-10-13 08:47:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:47:36,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-13 08:47:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:36,838 INFO L225 Difference]: With dead ends: 47854 [2020-10-13 08:47:36,838 INFO L226 Difference]: Without dead ends: 30908 [2020-10-13 08:47:36,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:47:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30908 states. [2020-10-13 08:47:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30908 to 30867. [2020-10-13 08:47:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30867 states. [2020-10-13 08:47:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30867 states to 30867 states and 37271 transitions. [2020-10-13 08:47:37,384 INFO L78 Accepts]: Start accepts. Automaton has 30867 states and 37271 transitions. Word has length 213 [2020-10-13 08:47:37,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:37,385 INFO L479 AbstractCegarLoop]: Abstraction has 30867 states and 37271 transitions. [2020-10-13 08:47:37,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:47:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 30867 states and 37271 transitions. [2020-10-13 08:47:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 08:47:37,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:37,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:37,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:47:37,393 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash 877333941, now seen corresponding path program 1 times [2020-10-13 08:47:37,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:37,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812359053] [2020-10-13 08:47:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:38,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 08:47:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:47:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1552 [2020-10-13 08:47:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:47:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 08:47:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:39,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:47:39,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 08:47:39,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:47:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 08:47:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:47:39,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812359053] [2020-10-13 08:47:39,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:39,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:47:39,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315815705] [2020-10-13 08:47:39,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:47:39,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:39,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:47:39,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:47:39,367 INFO L87 Difference]: Start difference. First operand 30867 states and 37271 transitions. Second operand 5 states. [2020-10-13 08:47:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:59,892 INFO L93 Difference]: Finished difference Result 74888 states and 92211 transitions. [2020-10-13 08:47:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:47:59,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-13 08:47:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:00,022 INFO L225 Difference]: With dead ends: 74888 [2020-10-13 08:48:00,023 INFO L226 Difference]: Without dead ends: 49734 [2020-10-13 08:48:00,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:48:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49734 states. [2020-10-13 08:48:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49734 to 48831. [2020-10-13 08:48:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48831 states. [2020-10-13 08:48:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48831 states to 48831 states and 60406 transitions. [2020-10-13 08:48:01,071 INFO L78 Accepts]: Start accepts. Automaton has 48831 states and 60406 transitions. Word has length 220 [2020-10-13 08:48:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:01,072 INFO L479 AbstractCegarLoop]: Abstraction has 48831 states and 60406 transitions. [2020-10-13 08:48:01,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:48:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 48831 states and 60406 transitions. [2020-10-13 08:48:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 08:48:01,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:01,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:48:01,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:48:01,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash -551266579, now seen corresponding path program 1 times [2020-10-13 08:48:01,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:01,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223586556] [2020-10-13 08:48:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:05,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 08:48:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:48:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4084 [2020-10-13 08:48:05,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:48:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:48:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:48:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:48:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:05,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:48:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:48:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:48:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:05,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:05,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:48:05,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:48:05,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:48:05,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 08:48:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:05,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:05,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:48:05,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:05,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:48:05,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 08:48:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:48:05,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223586556] [2020-10-13 08:48:05,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:05,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:48:05,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430421938] [2020-10-13 08:48:05,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:48:05,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:48:05,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:48:05,704 INFO L87 Difference]: Start difference. First operand 48831 states and 60406 transitions. Second operand 7 states. [2020-10-13 08:48:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:29,750 INFO L93 Difference]: Finished difference Result 117470 states and 152024 transitions. [2020-10-13 08:48:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:48:29,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-13 08:48:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:29,944 INFO L225 Difference]: With dead ends: 117470 [2020-10-13 08:48:29,944 INFO L226 Difference]: Without dead ends: 68645 [2020-10-13 08:48:30,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:48:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68645 states. [2020-10-13 08:48:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68645 to 68514. [2020-10-13 08:48:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68514 states. [2020-10-13 08:48:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68514 states to 68514 states and 85126 transitions. [2020-10-13 08:48:31,152 INFO L78 Accepts]: Start accepts. Automaton has 68514 states and 85126 transitions. Word has length 248 [2020-10-13 08:48:31,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:31,153 INFO L479 AbstractCegarLoop]: Abstraction has 68514 states and 85126 transitions. [2020-10-13 08:48:31,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:48:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 68514 states and 85126 transitions. [2020-10-13 08:48:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 08:48:31,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:31,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:48:31,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:48:31,169 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash -756738099, now seen corresponding path program 1 times [2020-10-13 08:48:31,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:31,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832312020] [2020-10-13 08:48:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-13 08:48:34,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:48:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3056 [2020-10-13 08:48:34,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:48:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:48:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:48:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:34,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:48:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:48:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:48:34,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:48:34,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:34,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:34,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:48:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:48:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:48:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:48:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 08:48:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 90 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:48:34,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832312020] [2020-10-13 08:48:34,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:34,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:48:34,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261482642] [2020-10-13 08:48:34,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:48:34,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:34,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:48:34,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:48:34,836 INFO L87 Difference]: Start difference. First operand 68514 states and 85126 transitions. Second operand 7 states.