/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/Problem18_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:49:34,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:49:34,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:49:34,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:49:34,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:49:34,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:49:34,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:49:34,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:49:34,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:49:34,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:49:34,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:49:34,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:49:34,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:49:34,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:49:34,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:49:34,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:49:34,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:49:34,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:49:34,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:49:34,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:49:34,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:49:34,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:49:34,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:49:34,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:49:34,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:49:34,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:49:34,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:49:34,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:49:34,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:49:34,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:49:34,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:49:34,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:49:34,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:49:34,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:49:34,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:49:34,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:49:34,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:49:34,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:49:34,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:49:34,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:49:34,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:49:34,507 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 09:49:34,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:49:34,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:49:34,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:49:34,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:49:34,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:49:34,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:49:34,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:49:34,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:49:34,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:49:34,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:49:34,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:49:34,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:49:34,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:49:34,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:49:34,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:49:34,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:49:34,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:49:34,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:49:34,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:49:34,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:49:34,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:49:34,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:49:34,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:49:34,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:49:34,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:49:34,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:49:34,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:49:34,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:49:34,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:49:34,541 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 09:49:34,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:49:34,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:49:34,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:49:34,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:49:34,862 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:49:34,862 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2020-10-13 09:49:34,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ac9a82c/77d5d2ebaeda41988276b25a273c0787/FLAG0839eba6d [2020-10-13 09:49:35,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:49:35,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2020-10-13 09:49:35,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ac9a82c/77d5d2ebaeda41988276b25a273c0787/FLAG0839eba6d [2020-10-13 09:49:35,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ac9a82c/77d5d2ebaeda41988276b25a273c0787 [2020-10-13 09:49:35,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:49:35,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:49:35,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:49:35,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:49:35,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:49:35,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:35" (1/1) ... [2020-10-13 09:49:35,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:35, skipping insertion in model container [2020-10-13 09:49:35,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:35" (1/1) ... [2020-10-13 09:49:35,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:49:35,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:49:37,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:49:37,425 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:49:37,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:49:37,900 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:49:37,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37 WrapperNode [2020-10-13 09:49:37,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:49:37,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:49:37,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:49:37,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:49:37,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:37,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:37,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:37,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:38,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:38,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:38,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (1/1) ... [2020-10-13 09:49:38,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:49:38,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:49:38,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:49:38,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:49:38,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (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 09:49:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:49:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:49:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:49:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:49:38,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:49:38,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:49:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:49:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:49:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:49:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:49:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:49:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:49:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:49:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:49:38,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:49:44,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:49:44,480 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:49:44,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:44 BoogieIcfgContainer [2020-10-13 09:49:44,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:49:44,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:49:44,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:49:44,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:49:44,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:49:35" (1/3) ... [2020-10-13 09:49:44,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1549f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:44, skipping insertion in model container [2020-10-13 09:49:44,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:37" (2/3) ... [2020-10-13 09:49:44,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1549f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:44, skipping insertion in model container [2020-10-13 09:49:44,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:44" (3/3) ... [2020-10-13 09:49:44,500 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label27.c [2020-10-13 09:49:44,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:49:44,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:49:44,539 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:49:44,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:49:44,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:49:44,565 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:49:44,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:49:44,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:49:44,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:49:44,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:49:44,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:49:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:49:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 09:49:44,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:44,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:44,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 602165681, now seen corresponding path program 1 times [2020-10-13 09:49:44,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:44,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398252800] [2020-10-13 09:49:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:45,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:45,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 09:49:45,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-13 09:49:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:49:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:49:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:49:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:49:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:45,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:49:45,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:49:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:45,284 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 09:49:45,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398252800] [2020-10-13 09:49:45,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:49:45,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:49:45,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967087263] [2020-10-13 09:49:45,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:45,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:45,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:45,311 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:49:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:56,323 INFO L93 Difference]: Finished difference Result 2984 states and 5767 transitions. [2020-10-13 09:49:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:49:56,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-13 09:49:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:56,360 INFO L225 Difference]: With dead ends: 2984 [2020-10-13 09:49:56,361 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:49:56,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:49:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:49:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:49:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3227 transitions. [2020-10-13 09:49:56,556 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3227 transitions. Word has length 36 [2020-10-13 09:49:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:56,556 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3227 transitions. [2020-10-13 09:49:56,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3227 transitions. [2020-10-13 09:49:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 09:49:56,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:56,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:56,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:49:56,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1465667148, now seen corresponding path program 1 times [2020-10-13 09:49:56,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:56,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692560565] [2020-10-13 09:49:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:57,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:49:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:49:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-13 09:49:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:49:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:49:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:57,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:57,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:57,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:49:57,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:49:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:57,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:49:57,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:49:57,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:49:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:49:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:49:57,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692560565] [2020-10-13 09:49:57,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:57,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:57,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674888248] [2020-10-13 09:49:57,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:57,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:57,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:57,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:57,536 INFO L87 Difference]: Start difference. First operand 2135 states and 3227 transitions. Second operand 5 states. [2020-10-13 09:50:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:05,655 INFO L93 Difference]: Finished difference Result 4981 states and 7826 transitions. [2020-10-13 09:50:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:05,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 09:50:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:05,680 INFO L225 Difference]: With dead ends: 4981 [2020-10-13 09:50:05,680 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:50:05,691 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 09:50:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:50:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:50:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:50:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4088 transitions. [2020-10-13 09:50:05,774 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4088 transitions. Word has length 106 [2020-10-13 09:50:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:05,775 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4088 transitions. [2020-10-13 09:50:05,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4088 transitions. [2020-10-13 09:50:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 09:50:05,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:05,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:05,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:50:05,779 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:05,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1312422072, now seen corresponding path program 1 times [2020-10-13 09:50:05,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:05,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329992720] [2020-10-13 09:50:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 09:50:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-13 09:50:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:50:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:50:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:07,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:07,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:50:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:50:07,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:50:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:07,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329992720] [2020-10-13 09:50:07,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:07,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:07,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231833225] [2020-10-13 09:50:07,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:07,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:07,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:07,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:07,157 INFO L87 Difference]: Start difference. First operand 2848 states and 4088 transitions. Second operand 5 states. [2020-10-13 09:50:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:12,699 INFO L93 Difference]: Finished difference Result 5712 states and 8207 transitions. [2020-10-13 09:50:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:12,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 09:50:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:12,718 INFO L225 Difference]: With dead ends: 5712 [2020-10-13 09:50:12,718 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:50:12,725 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 09:50:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:50:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:50:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:50:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4085 transitions. [2020-10-13 09:50:12,794 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4085 transitions. Word has length 124 [2020-10-13 09:50:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:12,794 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4085 transitions. [2020-10-13 09:50:12,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4085 transitions. [2020-10-13 09:50:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 09:50:12,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:12,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:12,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:50:12,799 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:12,800 INFO L82 PathProgramCache]: Analyzing trace with hash -814317136, now seen corresponding path program 1 times [2020-10-13 09:50:12,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:12,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411161375] [2020-10-13 09:50:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:13,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:13,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 09:50:13,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-13 09:50:13,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:50:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:50:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:13,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:13,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:13,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:13,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:13,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:13,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:50:13,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:13,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:50:13,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:13,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:50:13,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:13,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411161375] [2020-10-13 09:50:13,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:13,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:50:13,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688472485] [2020-10-13 09:50:13,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:50:13,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:13,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:50:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:13,977 INFO L87 Difference]: Start difference. First operand 2848 states and 4085 transitions. Second operand 6 states. [2020-10-13 09:50:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:23,958 INFO L93 Difference]: Finished difference Result 6404 states and 9546 transitions. [2020-10-13 09:50:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:50:23,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-13 09:50:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:23,979 INFO L225 Difference]: With dead ends: 6404 [2020-10-13 09:50:23,980 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:50:23,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:50:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:50:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:50:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:50:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5214 transitions. [2020-10-13 09:50:24,090 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5214 transitions. Word has length 168 [2020-10-13 09:50:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:24,091 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 5214 transitions. [2020-10-13 09:50:24,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:50:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5214 transitions. [2020-10-13 09:50:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 09:50:24,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:24,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:24,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:50:24,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:24,097 INFO L82 PathProgramCache]: Analyzing trace with hash -231968084, now seen corresponding path program 1 times [2020-10-13 09:50:24,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:24,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777661365] [2020-10-13 09:50:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:25,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:25,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:50:25,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:25,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-10-13 09:50:25,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:50:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:50:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:25,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:25,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:25,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:50:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:25,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:25,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:50:25,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:50:25,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:50:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:25,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777661365] [2020-10-13 09:50:25,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:25,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:25,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928804426] [2020-10-13 09:50:25,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:25,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:25,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:25,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:25,533 INFO L87 Difference]: Start difference. First operand 3558 states and 5214 transitions. Second operand 5 states. [2020-10-13 09:50:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:31,113 INFO L93 Difference]: Finished difference Result 7136 states and 10466 transitions. [2020-10-13 09:50:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:31,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-13 09:50:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:31,128 INFO L225 Difference]: With dead ends: 7136 [2020-10-13 09:50:31,128 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:50:31,137 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 09:50:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:50:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:50:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:50:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5210 transitions. [2020-10-13 09:50:31,216 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5210 transitions. Word has length 186 [2020-10-13 09:50:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:31,216 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 5210 transitions. [2020-10-13 09:50:31,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:31,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5210 transitions. [2020-10-13 09:50:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 09:50:31,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:31,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:50:31,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:50:31,220 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:31,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2083067766, now seen corresponding path program 1 times [2020-10-13 09:50:31,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:31,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749291893] [2020-10-13 09:50:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 09:50:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-13 09:50:32,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:50:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:50:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:50:32,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:32,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:50:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:50:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:50:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:32,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:50:32,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:32,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:50:32,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:50:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:50:32,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749291893] [2020-10-13 09:50:32,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:32,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:32,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45134280] [2020-10-13 09:50:32,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:32,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:32,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:32,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:32,375 INFO L87 Difference]: Start difference. First operand 3558 states and 5210 transitions. Second operand 5 states. [2020-10-13 09:50:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:41,932 INFO L93 Difference]: Finished difference Result 10668 states and 15831 transitions. [2020-10-13 09:50:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:41,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 09:50:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:41,963 INFO L225 Difference]: With dead ends: 10668 [2020-10-13 09:50:41,964 INFO L226 Difference]: Without dead ends: 7116 [2020-10-13 09:50:41,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:50:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2020-10-13 09:50:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 7108. [2020-10-13 09:50:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7108 states. [2020-10-13 09:50:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 9682 transitions. [2020-10-13 09:50:42,121 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 9682 transitions. Word has length 197 [2020-10-13 09:50:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:42,122 INFO L479 AbstractCegarLoop]: Abstraction has 7108 states and 9682 transitions. [2020-10-13 09:50:42,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 9682 transitions. [2020-10-13 09:50:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 09:50:42,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:42,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:42,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:50:42,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash 13673468, now seen corresponding path program 1 times [2020-10-13 09:50:42,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:42,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284280944] [2020-10-13 09:50:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:50:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-13 09:50:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 09:50:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:50:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:50:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 09:50:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:50:43,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 09:50:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:43,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284280944] [2020-10-13 09:50:43,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:43,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:43,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010067430] [2020-10-13 09:50:43,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:43,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:43,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:43,633 INFO L87 Difference]: Start difference. First operand 7108 states and 9682 transitions. Second operand 5 states. [2020-10-13 09:50:53,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:53,140 INFO L93 Difference]: Finished difference Result 21312 states and 29514 transitions. [2020-10-13 09:50:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:53,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-13 09:50:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:53,198 INFO L225 Difference]: With dead ends: 21312 [2020-10-13 09:50:53,198 INFO L226 Difference]: Without dead ends: 14210 [2020-10-13 09:50:53,214 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 09:50:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14210 states. [2020-10-13 09:50:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14210 to 14202. [2020-10-13 09:50:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14202 states. [2020-10-13 09:50:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14202 states to 14202 states and 18212 transitions. [2020-10-13 09:50:53,504 INFO L78 Accepts]: Start accepts. Automaton has 14202 states and 18212 transitions. Word has length 210 [2020-10-13 09:50:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:53,504 INFO L479 AbstractCegarLoop]: Abstraction has 14202 states and 18212 transitions. [2020-10-13 09:50:53,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 14202 states and 18212 transitions. [2020-10-13 09:50:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 09:50:53,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:53,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:53,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:50:53,515 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash -685331575, now seen corresponding path program 1 times [2020-10-13 09:50:53,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:53,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681875832] [2020-10-13 09:50:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-13 09:50:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-10-13 09:50:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-10-13 09:50:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:50:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:54,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:54,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:54,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:55,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:55,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 09:50:55,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:55,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 09:50:55,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 09:50:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:55,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681875832] [2020-10-13 09:50:55,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:55,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:55,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769225075] [2020-10-13 09:50:55,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:55,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:55,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:55,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:55,211 INFO L87 Difference]: Start difference. First operand 14202 states and 18212 transitions. Second operand 5 states. [2020-10-13 09:51:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:04,820 INFO L93 Difference]: Finished difference Result 33367 states and 43721 transitions. [2020-10-13 09:51:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:04,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-13 09:51:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:04,891 INFO L225 Difference]: With dead ends: 33367 [2020-10-13 09:51:04,892 INFO L226 Difference]: Without dead ends: 19171 [2020-10-13 09:51:04,919 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 09:51:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19171 states. [2020-10-13 09:51:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19171 to 19163. [2020-10-13 09:51:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19163 states. [2020-10-13 09:51:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19163 states to 19163 states and 23958 transitions. [2020-10-13 09:51:05,456 INFO L78 Accepts]: Start accepts. Automaton has 19163 states and 23958 transitions. Word has length 235 [2020-10-13 09:51:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:05,457 INFO L479 AbstractCegarLoop]: Abstraction has 19163 states and 23958 transitions. [2020-10-13 09:51:05,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19163 states and 23958 transitions. [2020-10-13 09:51:05,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 09:51:05,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:05,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:05,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:51:05,471 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:05,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1195832993, now seen corresponding path program 1 times [2020-10-13 09:51:05,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:05,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201864926] [2020-10-13 09:51:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:07,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 09:51:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1971 [2020-10-13 09:51:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:51:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:51:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:51:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:07,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:07,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:51:07,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:51:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:07,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:07,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:51:07,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:51:07,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:07,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:07,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:07,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:51:07,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:51:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:07,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:07,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:51:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:51:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:07,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:51:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:07,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:07,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:51:07,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:07,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:51:07,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 09:51:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 87 proven. 151 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 09:51:08,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201864926] [2020-10-13 09:51:08,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:08,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:08,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284672963] [2020-10-13 09:51:08,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:08,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:08,031 INFO L87 Difference]: Start difference. First operand 19163 states and 23958 transitions. Second operand 7 states. [2020-10-13 09:51:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:20,069 INFO L93 Difference]: Finished difference Result 53529 states and 69059 transitions. [2020-10-13 09:51:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:51:20,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-13 09:51:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:20,172 INFO L225 Difference]: With dead ends: 53529 [2020-10-13 09:51:20,172 INFO L226 Difference]: Without dead ends: 34372 [2020-10-13 09:51:20,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:51:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34372 states. [2020-10-13 09:51:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34372 to 33634. [2020-10-13 09:51:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33634 states. [2020-10-13 09:51:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33634 states to 33634 states and 41237 transitions. [2020-10-13 09:51:20,833 INFO L78 Accepts]: Start accepts. Automaton has 33634 states and 41237 transitions. Word has length 291 [2020-10-13 09:51:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:20,834 INFO L479 AbstractCegarLoop]: Abstraction has 33634 states and 41237 transitions. [2020-10-13 09:51:20,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:51:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 33634 states and 41237 transitions. [2020-10-13 09:51:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-13 09:51:20,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:20,854 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:20,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:51:20,855 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:20,855 INFO L82 PathProgramCache]: Analyzing trace with hash 879946528, now seen corresponding path program 1 times [2020-10-13 09:51:20,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:20,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164755681] [2020-10-13 09:51:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:23,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:23,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-13 09:51:23,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2124 [2020-10-13 09:51:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 235 [2020-10-13 09:51:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 09:51:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:23,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:23,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:23,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:23,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:23,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:23,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:23,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:51:23,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 09:51:23,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:51:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:51:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:23,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:23,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:51:23,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:51:23,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:23,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:51:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:51:23,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164755681] [2020-10-13 09:51:23,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:23,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:51:23,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403004336] [2020-10-13 09:51:23,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:51:23,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:23,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:51:23,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:51:23,798 INFO L87 Difference]: Start difference. First operand 33634 states and 41237 transitions. Second operand 8 states. [2020-10-13 09:51:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:38,346 INFO L93 Difference]: Finished difference Result 67583 states and 83468 transitions. [2020-10-13 09:51:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:51:38,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-13 09:51:38,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:38,438 INFO L225 Difference]: With dead ends: 67583 [2020-10-13 09:51:38,438 INFO L226 Difference]: Without dead ends: 33955 [2020-10-13 09:51:38,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:51:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33955 states. [2020-10-13 09:51:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33955 to 33908. [2020-10-13 09:51:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33908 states. [2020-10-13 09:51:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33908 states to 33908 states and 40134 transitions. [2020-10-13 09:51:39,023 INFO L78 Accepts]: Start accepts. Automaton has 33908 states and 40134 transitions. Word has length 355 [2020-10-13 09:51:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:39,024 INFO L479 AbstractCegarLoop]: Abstraction has 33908 states and 40134 transitions. [2020-10-13 09:51:39,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:51:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 33908 states and 40134 transitions. [2020-10-13 09:51:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-13 09:51:39,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:39,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:39,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:51:39,053 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash 120977443, now seen corresponding path program 1 times [2020-10-13 09:51:39,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:39,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342817656] [2020-10-13 09:51:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:44,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:44,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-13 09:51:44,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:51:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:51:44,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:51:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:51:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:51:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:51:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:44,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:44,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:51:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:51:44,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:51:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:44,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:51:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:45,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:45,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 09:51:45,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:45,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-13 09:51:45,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:51:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-13 09:51:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:51:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:51:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:51:45,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 09:51:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 185 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 09:51:46,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342817656] [2020-10-13 09:51:46,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:46,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:51:46,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563720075] [2020-10-13 09:51:46,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:51:46,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:46,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:51:46,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:51:46,157 INFO L87 Difference]: Start difference. First operand 33908 states and 40134 transitions. Second operand 10 states. [2020-10-13 09:51:46,359 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-13 09:51:46,836 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-13 09:51:47,511 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 09:51:47,642 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 09:51:48,380 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 09:51:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:57,287 INFO L93 Difference]: Finished difference Result 68177 states and 80921 transitions. [2020-10-13 09:51:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:51:57,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 437 [2020-10-13 09:51:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:57,380 INFO L225 Difference]: With dead ends: 68177 [2020-10-13 09:51:57,381 INFO L226 Difference]: Without dead ends: 33921 [2020-10-13 09:51:57,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:51:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33921 states. [2020-10-13 09:51:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33921 to 33830. [2020-10-13 09:51:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33830 states. [2020-10-13 09:51:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33830 states to 33830 states and 37432 transitions. [2020-10-13 09:51:57,887 INFO L78 Accepts]: Start accepts. Automaton has 33830 states and 37432 transitions. Word has length 437 [2020-10-13 09:51:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:57,887 INFO L479 AbstractCegarLoop]: Abstraction has 33830 states and 37432 transitions. [2020-10-13 09:51:57,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:51:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 33830 states and 37432 transitions. [2020-10-13 09:51:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-13 09:51:57,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:57,910 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 09:51:57,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:51:57,911 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:57,911 INFO L82 PathProgramCache]: Analyzing trace with hash -45222040, now seen corresponding path program 1 times [2020-10-13 09:51:57,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:57,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043098611] [2020-10-13 09:51:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:02,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-13 09:52:02,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:52:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:52:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 329 [2020-10-13 09:52:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:52:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:03,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:03,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:52:03,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:52:03,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:03,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:52:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:03,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:52:03,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:03,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:52:03,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-13 09:52:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:03,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:52:03,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:52:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:52:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-13 09:52:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:03,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:52:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-13 09:52:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:52:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:04,002 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-13 09:52:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-13 09:52:04,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043098611] [2020-10-13 09:52:04,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:04,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:52:04,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530552603] [2020-10-13 09:52:04,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:52:04,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:52:04,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:04,725 INFO L87 Difference]: Start difference. First operand 33830 states and 37432 transitions. Second operand 7 states. [2020-10-13 09:52:06,963 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-13 09:52:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:11,794 INFO L93 Difference]: Finished difference Result 67019 states and 74270 transitions. [2020-10-13 09:52:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:52:11,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-13 09:52:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:11,877 INFO L225 Difference]: With dead ends: 67019 [2020-10-13 09:52:11,877 INFO L226 Difference]: Without dead ends: 33165 [2020-10-13 09:52:11,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:52:11,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33165 states. [2020-10-13 09:52:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33165 to 33141. [2020-10-13 09:52:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33141 states. [2020-10-13 09:52:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33141 states to 33141 states and 36609 transitions. [2020-10-13 09:52:12,381 INFO L78 Accepts]: Start accepts. Automaton has 33141 states and 36609 transitions. Word has length 445 [2020-10-13 09:52:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:12,382 INFO L479 AbstractCegarLoop]: Abstraction has 33141 states and 36609 transitions. [2020-10-13 09:52:12,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 33141 states and 36609 transitions. [2020-10-13 09:52:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-13 09:52:12,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:12,421 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:12,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:52:12,421 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:12,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1217805806, now seen corresponding path program 1 times [2020-10-13 09:52:12,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:12,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016702985] [2020-10-13 09:52:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-13 09:52:17,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4676 [2020-10-13 09:52:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 344 [2020-10-13 09:52:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 09:52:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:52:17,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:52:17,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:52:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-13 09:52:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-13 09:52:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:52:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:52:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:52:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-13 09:52:17,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016702985] [2020-10-13 09:52:17,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:17,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:52:17,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812077472] [2020-10-13 09:52:17,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:52:17,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:17,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:52:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:17,950 INFO L87 Difference]: Start difference. First operand 33141 states and 36609 transitions. Second operand 7 states. [2020-10-13 09:52:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:29,778 INFO L93 Difference]: Finished difference Result 81146 states and 95688 transitions. [2020-10-13 09:52:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:52:29,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-13 09:52:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:29,932 INFO L225 Difference]: With dead ends: 81146 [2020-10-13 09:52:29,932 INFO L226 Difference]: Without dead ends: 48011 [2020-10-13 09:52:29,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:52:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48011 states. [2020-10-13 09:52:30,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48011 to 47500. [2020-10-13 09:52:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47500 states. [2020-10-13 09:52:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47500 states to 47500 states and 52526 transitions. [2020-10-13 09:52:30,990 INFO L78 Accepts]: Start accepts. Automaton has 47500 states and 52526 transitions. Word has length 462 [2020-10-13 09:52:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:30,991 INFO L479 AbstractCegarLoop]: Abstraction has 47500 states and 52526 transitions. [2020-10-13 09:52:30,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 47500 states and 52526 transitions. [2020-10-13 09:52:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-13 09:52:31,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:31,010 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:31,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:52:31,011 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:31,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2032070197, now seen corresponding path program 1 times [2020-10-13 09:52:31,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:31,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262047108] [2020-10-13 09:52:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:31,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:32,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-13 09:52:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:52:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:52:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 471 [2020-10-13 09:52:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:52:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:36,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:36,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:52:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:52:36,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:36,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:52:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:52:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:52:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-13 09:52:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:52:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:36,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:52:36,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:52:36,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:52:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:52:37,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262047108] [2020-10-13 09:52:37,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:37,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:37,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647891581] [2020-10-13 09:52:37,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:37,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:37,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:37,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:37,176 INFO L87 Difference]: Start difference. First operand 47500 states and 52526 transitions. Second operand 5 states. [2020-10-13 09:52:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:43,420 INFO L93 Difference]: Finished difference Result 95025 states and 105177 transitions. [2020-10-13 09:52:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:43,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 496 [2020-10-13 09:52:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:43,508 INFO L225 Difference]: With dead ends: 95025 [2020-10-13 09:52:43,509 INFO L226 Difference]: Without dead ends: 47499 [2020-10-13 09:52:43,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 09:52:43,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47499 states. [2020-10-13 09:52:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47499 to 47495. [2020-10-13 09:52:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47495 states. [2020-10-13 09:52:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47495 states to 47495 states and 52508 transitions. [2020-10-13 09:52:44,020 INFO L78 Accepts]: Start accepts. Automaton has 47495 states and 52508 transitions. Word has length 496 [2020-10-13 09:52:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:44,020 INFO L479 AbstractCegarLoop]: Abstraction has 47495 states and 52508 transitions. [2020-10-13 09:52:44,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 47495 states and 52508 transitions. [2020-10-13 09:52:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-13 09:52:44,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:44,038 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:44,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:52:44,039 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:44,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:44,039 INFO L82 PathProgramCache]: Analyzing trace with hash -400972763, now seen corresponding path program 1 times [2020-10-13 09:52:44,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:44,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173097512] [2020-10-13 09:52:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:52:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:46,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:52:46,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:52:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:52:46,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:52:46,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:52:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:52:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-13 09:52:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-13 09:52:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 09:52:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 87 proven. 206 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 09:52:46,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173097512] [2020-10-13 09:52:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:46,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:52:46,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131047062] [2020-10-13 09:52:46,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:52:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:52:46,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:46,838 INFO L87 Difference]: Start difference. First operand 47495 states and 52508 transitions. Second operand 7 states. [2020-10-13 09:52:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:58,173 INFO L93 Difference]: Finished difference Result 97165 states and 107313 transitions. [2020-10-13 09:52:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:52:58,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2020-10-13 09:52:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:58,255 INFO L225 Difference]: With dead ends: 97165 [2020-10-13 09:52:58,255 INFO L226 Difference]: Without dead ends: 49676 [2020-10-13 09:52:58,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:52:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49676 states. [2020-10-13 09:52:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49676 to 49652. [2020-10-13 09:52:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49652 states. [2020-10-13 09:52:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49652 states to 49652 states and 54762 transitions. [2020-10-13 09:52:58,781 INFO L78 Accepts]: Start accepts. Automaton has 49652 states and 54762 transitions. Word has length 529 [2020-10-13 09:52:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:58,782 INFO L479 AbstractCegarLoop]: Abstraction has 49652 states and 54762 transitions. [2020-10-13 09:52:58,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 49652 states and 54762 transitions. [2020-10-13 09:52:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-13 09:52:58,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:58,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:58,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:52:58,809 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:58,810 INFO L82 PathProgramCache]: Analyzing trace with hash 734138352, now seen corresponding path program 1 times [2020-10-13 09:52:58,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:58,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192501456] [2020-10-13 09:52:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:01,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:03,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:03,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 611 [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 572 [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:53:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:53:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:53:04,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:04,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:53:04,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:53:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:53:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:53:04,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-13 09:53:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:53:04,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 09:53:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:53:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:53:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:53:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:53:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-10-13 09:53:04,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192501456] [2020-10-13 09:53:04,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:04,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:04,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968280091] [2020-10-13 09:53:04,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:04,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:04,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:04,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:04,983 INFO L87 Difference]: Start difference. First operand 49652 states and 54762 transitions. Second operand 5 states. [2020-10-13 09:53:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:11,805 INFO L93 Difference]: Finished difference Result 97204 states and 107464 transitions. [2020-10-13 09:53:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:11,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 595 [2020-10-13 09:53:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:11,892 INFO L225 Difference]: With dead ends: 97204 [2020-10-13 09:53:11,892 INFO L226 Difference]: Without dead ends: 49647 [2020-10-13 09:53:11,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 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 09:53:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49647 states. [2020-10-13 09:53:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49647 to 49647. [2020-10-13 09:53:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49647 states. [2020-10-13 09:53:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49647 states to 49647 states and 54735 transitions. [2020-10-13 09:53:12,444 INFO L78 Accepts]: Start accepts. Automaton has 49647 states and 54735 transitions. Word has length 595 [2020-10-13 09:53:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:12,444 INFO L479 AbstractCegarLoop]: Abstraction has 49647 states and 54735 transitions. [2020-10-13 09:53:12,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 49647 states and 54735 transitions. [2020-10-13 09:53:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-13 09:53:12,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:12,464 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:12,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:53:12,465 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:12,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1238937385, now seen corresponding path program 1 times [2020-10-13 09:53:12,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:12,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229083025] [2020-10-13 09:53:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking...