/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:31:26,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:31:26,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:31:26,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:31:26,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:31:26,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:31:26,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:31:26,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:31:26,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:31:26,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:31:26,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:31:26,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:31:26,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:31:26,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:31:26,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:31:26,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:31:26,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:31:26,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:31:26,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:31:26,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:31:26,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:31:26,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:31:26,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:31:26,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:31:26,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:31:26,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:31:26,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:31:26,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:31:26,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:31:26,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:31:26,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:31:26,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:31:26,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:31:26,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:31:26,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:31:26,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:31:26,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:31:26,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:31:26,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:31:26,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:31:26,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:31:26,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 18:31:26,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:31:26,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:31:26,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:31:26,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:31:26,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:31:26,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:31:26,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:31:26,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:31:26,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:31:26,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:31:26,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:31:26,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:31:26,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:31:26,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:31:26,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:31:26,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:31:26,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:31:26,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:31:26,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:31:26,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:31:26,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:31:26,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:31:26,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:31:26,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:31:26,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:31:26,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:31:26,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:31:26,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:31:26,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:31:26,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:31:26,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:31:26,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:31:26,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:31:26,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:31:26,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:31:26,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2020-10-14 18:31:26,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861d9cf6c/0bbebf2aae984d9a833ba71f2e8fb943/FLAG64b20ab64 [2020-10-14 18:31:27,385 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:31:27,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skipped.c [2020-10-14 18:31:27,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861d9cf6c/0bbebf2aae984d9a833ba71f2e8fb943/FLAG64b20ab64 [2020-10-14 18:31:27,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861d9cf6c/0bbebf2aae984d9a833ba71f2e8fb943 [2020-10-14 18:31:27,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:31:27,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:31:27,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:31:27,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:31:27,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:31:27,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:31:27" (1/1) ... [2020-10-14 18:31:27,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:27, skipping insertion in model container [2020-10-14 18:31:27,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:31:27" (1/1) ... [2020-10-14 18:31:27,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:31:27,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:31:27,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:31:27,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:31:28,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:31:28,043 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:31:28,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28 WrapperNode [2020-10-14 18:31:28,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:31:28,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:31:28,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:31:28,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:31:28,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... [2020-10-14 18:31:28,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:31:28,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:31:28,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:31:28,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:31:28,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:31:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:31:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:31:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:31:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:31:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:31:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:31:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:31:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:31:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:31:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:31:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:31:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:31:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:31:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:31:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:31:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:31:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:31:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:31:28,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:31:28,557 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:31:28,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:31:28 BoogieIcfgContainer [2020-10-14 18:31:28,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:31:28,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:31:28,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:31:28,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:31:28,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:31:27" (1/3) ... [2020-10-14 18:31:28,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e353c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:31:28, skipping insertion in model container [2020-10-14 18:31:28,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:31:28" (2/3) ... [2020-10-14 18:31:28,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e353c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:31:28, skipping insertion in model container [2020-10-14 18:31:28,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:31:28" (3/3) ... [2020-10-14 18:31:28,571 INFO L109 eAbstractionObserver]: Analyzing ICFG skipped.c [2020-10-14 18:31:28,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:31:28,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:31:28,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:31:28,648 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:31:28,648 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:31:28,649 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:31:28,649 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:31:28,649 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:31:28,649 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:31:28,650 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:31:28,650 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:31:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-14 18:31:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:31:28,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:28,682 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] [2020-10-14 18:31:28,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:28,690 INFO L82 PathProgramCache]: Analyzing trace with hash -978746934, now seen corresponding path program 1 times [2020-10-14 18:31:28,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:28,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539329730] [2020-10-14 18:31:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:28,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:29,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:31:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:31:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 757 [2020-10-14 18:31:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:29,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:31:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:31:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 18:31:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:29,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:29,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:29,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 18:31:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:29,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:31:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:29,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:31:29,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539329730] [2020-10-14 18:31:29,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:31:29,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:31:29,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605500493] [2020-10-14 18:31:29,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:31:29,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:29,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:31:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:31:29,778 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2020-10-14 18:31:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:30,033 INFO L93 Difference]: Finished difference Result 77 states and 105 transitions. [2020-10-14 18:31:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:31:30,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 18:31:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:30,045 INFO L225 Difference]: With dead ends: 77 [2020-10-14 18:31:30,046 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 18:31:30,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:31:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 18:31:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-14 18:31:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 18:31:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-14 18:31:30,094 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 22 [2020-10-14 18:31:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:30,095 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-14 18:31:30,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:31:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-14 18:31:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 18:31:30,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:30,097 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] [2020-10-14 18:31:30,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:31:30,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:30,098 INFO L82 PathProgramCache]: Analyzing trace with hash 657216618, now seen corresponding path program 1 times [2020-10-14 18:31:30,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:30,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211252701] [2020-10-14 18:31:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:31:30,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-14 18:31:30,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:31:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:31:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:31:30,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 18:31:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:30,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:30,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:31:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:31:30,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211252701] [2020-10-14 18:31:30,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:30,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:31:30,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585292449] [2020-10-14 18:31:30,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:31:30,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:30,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:31:30,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:31:30,828 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 10 states. [2020-10-14 18:31:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:31,221 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 18:31:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:31:31,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-14 18:31:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:31,224 INFO L225 Difference]: With dead ends: 63 [2020-10-14 18:31:31,224 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 18:31:31,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:31:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 18:31:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2020-10-14 18:31:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 18:31:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-14 18:31:31,238 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 29 [2020-10-14 18:31:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:31,239 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-14 18:31:31,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:31:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-14 18:31:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 18:31:31,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:31,241 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] [2020-10-14 18:31:31,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:31:31,241 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1358281196, now seen corresponding path program 1 times [2020-10-14 18:31:31,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:31,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604546862] [2020-10-14 18:31:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:31:31,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:31,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 18:31:31,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:31:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:31:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:31:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 18:31:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:31,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:31:31,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604546862] [2020-10-14 18:31:31,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:31,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:31:31,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486999294] [2020-10-14 18:31:31,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:31:31,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:31,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:31:31,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:31:31,753 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 11 states. [2020-10-14 18:31:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:32,111 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-14 18:31:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:31:32,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-14 18:31:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:32,116 INFO L225 Difference]: With dead ends: 65 [2020-10-14 18:31:32,116 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 18:31:32,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:31:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 18:31:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 40. [2020-10-14 18:31:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 18:31:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-14 18:31:32,126 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 29 [2020-10-14 18:31:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:32,126 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-14 18:31:32,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:31:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-14 18:31:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 18:31:32,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:32,128 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:31:32,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:31:32,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:32,129 INFO L82 PathProgramCache]: Analyzing trace with hash -834953827, now seen corresponding path program 1 times [2020-10-14 18:31:32,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:32,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941115504] [2020-10-14 18:31:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:31:32,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 18:31:32,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:31:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:31:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:31:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:32,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:32,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 18:31:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:31:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:32,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:31:32,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941115504] [2020-10-14 18:31:32,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:32,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:31:32,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586921215] [2020-10-14 18:31:32,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:31:32,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:32,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:31:32,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:31:32,639 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 10 states. [2020-10-14 18:31:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:33,039 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-14 18:31:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:31:33,041 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-14 18:31:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:33,042 INFO L225 Difference]: With dead ends: 69 [2020-10-14 18:31:33,043 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 18:31:33,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:31:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 18:31:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-10-14 18:31:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 18:31:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-14 18:31:33,056 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 37 [2020-10-14 18:31:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:33,057 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-14 18:31:33,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:31:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-14 18:31:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 18:31:33,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:33,060 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:31:33,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:31:33,061 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1871665567, now seen corresponding path program 1 times [2020-10-14 18:31:33,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:33,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153849228] [2020-10-14 18:31:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:33,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:31:33,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 18:31:33,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:33,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:31:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:31:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:31:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:33,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:33,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:33,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:33,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:33,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:33,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:33,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 18:31:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:33,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:33,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:33,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:33,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:31:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:33,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:33,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:31:33,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153849228] [2020-10-14 18:31:33,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:33,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:31:33,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809231788] [2020-10-14 18:31:33,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:31:33,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:33,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:31:33,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:31:33,572 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 11 states. [2020-10-14 18:31:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:33,934 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-14 18:31:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:31:33,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-14 18:31:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:33,936 INFO L225 Difference]: With dead ends: 73 [2020-10-14 18:31:33,936 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 18:31:33,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:31:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 18:31:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2020-10-14 18:31:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 18:31:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 18:31:33,944 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 37 [2020-10-14 18:31:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:33,945 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 18:31:33,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:31:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 18:31:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:31:33,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:33,947 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:31:33,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:31:33,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash 60031952, now seen corresponding path program 2 times [2020-10-14 18:31:33,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:33,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598154052] [2020-10-14 18:31:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:34,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 18:31:35,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:31:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-14 18:31:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:35,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:31:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 18:31:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:31:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:35,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:35,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:35,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:35,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:35,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:35,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 18:31:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:35,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:35,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:35,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 18:31:35,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:35,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:35,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:31:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:35,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:35,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:35,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:35,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:35,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:31:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:35,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:35,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:31:35,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598154052] [2020-10-14 18:31:35,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:35,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:31:35,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759920645] [2020-10-14 18:31:35,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:31:35,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:35,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:31:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:31:35,665 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 10 states. [2020-10-14 18:31:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:36,336 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2020-10-14 18:31:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:31:36,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-14 18:31:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:36,338 INFO L225 Difference]: With dead ends: 107 [2020-10-14 18:31:36,338 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 18:31:36,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:31:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 18:31:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-10-14 18:31:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 18:31:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-14 18:31:36,361 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 45 [2020-10-14 18:31:36,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:36,362 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-14 18:31:36,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:31:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-14 18:31:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 18:31:36,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:36,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 18:31:36,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:31:36,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash 641532654, now seen corresponding path program 3 times [2020-10-14 18:31:36,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:36,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830319155] [2020-10-14 18:31:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:39,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 18:31:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:31:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:31:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:31:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:31:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:41,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 18:31:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:41,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:41,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:41,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:31:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:41,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:41,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:41,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:41,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 18:31:41,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830319155] [2020-10-14 18:31:41,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:41,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:31:41,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882794067] [2020-10-14 18:31:41,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:31:41,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:41,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:31:41,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:31:41,563 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 10 states. [2020-10-14 18:31:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:41,920 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2020-10-14 18:31:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:31:41,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-14 18:31:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:41,921 INFO L225 Difference]: With dead ends: 114 [2020-10-14 18:31:41,922 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 18:31:41,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:31:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 18:31:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-10-14 18:31:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 18:31:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-14 18:31:41,938 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 52 [2020-10-14 18:31:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:41,938 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-14 18:31:41,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:31:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-14 18:31:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:31:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:41,943 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-14 18:31:41,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:31:41,944 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1366489844, now seen corresponding path program 4 times [2020-10-14 18:31:41,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:41,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551738646] [2020-10-14 18:31:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:42,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:46,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:46,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:31:46,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:31:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 18:31:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:46,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:31:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:31:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:47,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:47,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:47,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:31:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:31:47,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:31:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:31:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:31:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:31:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:31:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:31:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 18:31:47,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551738646] [2020-10-14 18:31:47,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:47,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:31:47,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023295075] [2020-10-14 18:31:47,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:31:47,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:31:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:31:47,513 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 12 states. [2020-10-14 18:31:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:48,107 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2020-10-14 18:31:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:31:48,108 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-14 18:31:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:48,109 INFO L225 Difference]: With dead ends: 102 [2020-10-14 18:31:48,109 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 18:31:48,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:31:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 18:31:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 18:31:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 18:31:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-14 18:31:48,119 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 54 [2020-10-14 18:31:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:48,119 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-14 18:31:48,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:31:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-14 18:31:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 18:31:48,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:48,121 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-10-14 18:31:48,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:31:48,121 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:48,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1659172778, now seen corresponding path program 5 times [2020-10-14 18:31:48,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:48,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002130471] [2020-10-14 18:31:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:48,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 18:31:53,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:31:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:31:53,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:31:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:31:53,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:53,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:53,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:53,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:31:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:31:53,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:31:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:53,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:31:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:53,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:53,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:53,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:53,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:53,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:31:53,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002130471] [2020-10-14 18:31:53,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:53,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:31:53,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976285001] [2020-10-14 18:31:53,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:31:53,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:53,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:31:53,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:31:53,800 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 20 states. [2020-10-14 18:31:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:56,139 INFO L93 Difference]: Finished difference Result 185 states and 212 transitions. [2020-10-14 18:31:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:31:56,140 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-10-14 18:31:56,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:56,144 INFO L225 Difference]: With dead ends: 185 [2020-10-14 18:31:56,144 INFO L226 Difference]: Without dead ends: 155 [2020-10-14 18:31:56,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 18:31:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-14 18:31:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 105. [2020-10-14 18:31:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 18:31:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-10-14 18:31:56,164 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 56 [2020-10-14 18:31:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:56,165 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-10-14 18:31:56,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:31:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-10-14 18:31:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 18:31:56,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:56,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-10-14 18:31:56,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:31:56,167 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash -712566484, now seen corresponding path program 1 times [2020-10-14 18:31:56,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:56,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130051627] [2020-10-14 18:31:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 18:32:01,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:32:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:32:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:32:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:32:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:01,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:01,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:32:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:01,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:01,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:32:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:01,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:01,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:32:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:01,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:01,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:01,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:01,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:01,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:01,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:01,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:32:01,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130051627] [2020-10-14 18:32:01,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:01,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:32:01,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527988508] [2020-10-14 18:32:01,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:32:01,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:01,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:32:01,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:32:01,881 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 20 states. [2020-10-14 18:32:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:03,903 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2020-10-14 18:32:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:32:03,904 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-10-14 18:32:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:03,906 INFO L225 Difference]: With dead ends: 147 [2020-10-14 18:32:03,906 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:32:03,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=251, Invalid=1389, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:32:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:32:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 88. [2020-10-14 18:32:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 18:32:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2020-10-14 18:32:03,920 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 56 [2020-10-14 18:32:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:03,920 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2020-10-14 18:32:03,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:32:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2020-10-14 18:32:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:32:03,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:03,922 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2020-10-14 18:32:03,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:32:03,922 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1628093128, now seen corresponding path program 6 times [2020-10-14 18:32:03,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:03,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949181227] [2020-10-14 18:32:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:08,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:32:08,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:32:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:32:08,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:08,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:32:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:32:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:10,000 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 29 [2020-10-14 18:32:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:10,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:10,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:10,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:32:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:10,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:10,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:32:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:10,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:10,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:32:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:32:10,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949181227] [2020-10-14 18:32:10,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:10,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:32:10,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383190439] [2020-10-14 18:32:10,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:32:10,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:10,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:32:10,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:32:10,244 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand 21 states. [2020-10-14 18:32:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:12,348 INFO L93 Difference]: Finished difference Result 200 states and 230 transitions. [2020-10-14 18:32:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:32:12,348 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 18:32:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:12,350 INFO L225 Difference]: With dead ends: 200 [2020-10-14 18:32:12,350 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 18:32:12,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=367, Invalid=1525, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:32:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 18:32:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 145. [2020-10-14 18:32:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 18:32:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 169 transitions. [2020-10-14 18:32:12,374 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 169 transitions. Word has length 58 [2020-10-14 18:32:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:12,375 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 169 transitions. [2020-10-14 18:32:12,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:32:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 169 transitions. [2020-10-14 18:32:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:32:12,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:12,376 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2020-10-14 18:32:12,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:32:12,376 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:12,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:12,377 INFO L82 PathProgramCache]: Analyzing trace with hash -743646134, now seen corresponding path program 2 times [2020-10-14 18:32:12,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:12,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839783045] [2020-10-14 18:32:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:17,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:32:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:32:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:32:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:17,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:32:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:32:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:17,625 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-10-14 18:32:17,746 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 16 [2020-10-14 18:32:17,880 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2020-10-14 18:32:18,017 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2020-10-14 18:32:18,658 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-10-14 18:32:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:32:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:18,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:32:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:32:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:18,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:32:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:18,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:18,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:18,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:32:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:18,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:18,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:18,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:18,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:18,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:32:18,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839783045] [2020-10-14 18:32:18,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:18,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:32:18,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623825673] [2020-10-14 18:32:18,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:32:18,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:18,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:32:18,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:32:18,908 INFO L87 Difference]: Start difference. First operand 145 states and 169 transitions. Second operand 21 states. [2020-10-14 18:32:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:20,146 INFO L93 Difference]: Finished difference Result 196 states and 224 transitions. [2020-10-14 18:32:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:32:20,149 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 18:32:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:20,151 INFO L225 Difference]: With dead ends: 196 [2020-10-14 18:32:20,156 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 18:32:20,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:32:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 18:32:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 90. [2020-10-14 18:32:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 18:32:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2020-10-14 18:32:20,186 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 58 [2020-10-14 18:32:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:20,189 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2020-10-14 18:32:20,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:32:20,190 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2020-10-14 18:32:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 18:32:20,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:20,191 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 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] [2020-10-14 18:32:20,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:32:20,193 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1825320550, now seen corresponding path program 7 times [2020-10-14 18:32:20,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:20,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897509832] [2020-10-14 18:32:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:20,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:24,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:24,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 18:32:24,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:32:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4448 [2020-10-14 18:32:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:24,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:32:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:32:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:25,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:25,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:25,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:25,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:25,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:32:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:25,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:25,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:25,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:25,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:25,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:32:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:25,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:25,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:25,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:25,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:32:25,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897509832] [2020-10-14 18:32:25,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:25,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:32:25,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601776989] [2020-10-14 18:32:25,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:32:25,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:25,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:32:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:32:25,303 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 24 states. [2020-10-14 18:32:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:36,405 INFO L93 Difference]: Finished difference Result 609 states and 780 transitions. [2020-10-14 18:32:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2020-10-14 18:32:36,407 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 60 [2020-10-14 18:32:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:36,415 INFO L225 Difference]: With dead ends: 609 [2020-10-14 18:32:36,415 INFO L226 Difference]: Without dead ends: 579 [2020-10-14 18:32:36,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11244 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3259, Invalid=25471, Unknown=0, NotChecked=0, Total=28730 [2020-10-14 18:32:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-14 18:32:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 166. [2020-10-14 18:32:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 18:32:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2020-10-14 18:32:36,487 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 60 [2020-10-14 18:32:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:36,487 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2020-10-14 18:32:36,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:32:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2020-10-14 18:32:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 18:32:36,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:36,489 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 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] [2020-10-14 18:32:36,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:32:36,489 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -546418712, now seen corresponding path program 3 times [2020-10-14 18:32:36,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:36,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969831804] [2020-10-14 18:32:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:41,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:32:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:42,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:32:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:42,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:42,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:32:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:42,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:42,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:42,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:42,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:42,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:42,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:42,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:42,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:42,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:42,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:42,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:32:42,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969831804] [2020-10-14 18:32:42,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:42,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:32:42,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21129989] [2020-10-14 18:32:42,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:32:42,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:42,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:32:42,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:32:42,620 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand 23 states. [2020-10-14 18:32:46,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:46,164 INFO L93 Difference]: Finished difference Result 316 states and 371 transitions. [2020-10-14 18:32:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 18:32:46,165 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2020-10-14 18:32:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:46,168 INFO L225 Difference]: With dead ends: 316 [2020-10-14 18:32:46,168 INFO L226 Difference]: Without dead ends: 276 [2020-10-14 18:32:46,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=556, Invalid=2636, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 18:32:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-14 18:32:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 166. [2020-10-14 18:32:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 18:32:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2020-10-14 18:32:46,213 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 60 [2020-10-14 18:32:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:46,214 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2020-10-14 18:32:46,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:32:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2020-10-14 18:32:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 18:32:46,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:46,216 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 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] [2020-10-14 18:32:46,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:32:46,216 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash 10572806, now seen corresponding path program 4 times [2020-10-14 18:32:46,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:46,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410444324] [2020-10-14 18:32:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 18:32:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:32:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:32:51,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:51,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:32:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:32:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:51,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:51,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:51,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:51,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:32:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:51,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:51,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:51,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:51,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:51,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:32:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:51,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:51,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:51,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:32:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:32:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:51,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:51,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:51,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:51,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:51,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:32:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 18:32:51,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410444324] [2020-10-14 18:32:51,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:51,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:32:51,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325356640] [2020-10-14 18:32:51,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:32:51,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:51,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:32:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:32:51,441 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 13 states. [2020-10-14 18:32:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:52,637 INFO L93 Difference]: Finished difference Result 287 states and 338 transitions. [2020-10-14 18:32:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:32:52,638 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-14 18:32:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:52,641 INFO L225 Difference]: With dead ends: 287 [2020-10-14 18:32:52,642 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 18:32:52,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:32:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 18:32:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 159. [2020-10-14 18:32:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 18:32:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 188 transitions. [2020-10-14 18:32:52,665 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 188 transitions. Word has length 62 [2020-10-14 18:32:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:52,665 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 188 transitions. [2020-10-14 18:32:52,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:32:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 188 transitions. [2020-10-14 18:32:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 18:32:52,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:52,666 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-10-14 18:32:52,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:32:52,667 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1975320797, now seen corresponding path program 8 times [2020-10-14 18:32:52,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:52,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913221968] [2020-10-14 18:32:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:53,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:53,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:32:53,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:32:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-14 18:32:53,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:53,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:32:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 18:32:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:54,258 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 20 [2020-10-14 18:32:54,478 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 18:32:54,683 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-14 18:32:54,858 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-10-14 18:32:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:55,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:32:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:32:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:55,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:55,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:55,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:55,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:32:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:55,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:55,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:32:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:32:55,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913221968] [2020-10-14 18:32:55,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:55,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:32:55,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634981865] [2020-10-14 18:32:55,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:32:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:32:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:32:55,137 INFO L87 Difference]: Start difference. First operand 159 states and 188 transitions. Second operand 20 states. [2020-10-14 18:32:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:57,313 INFO L93 Difference]: Finished difference Result 228 states and 267 transitions. [2020-10-14 18:32:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:32:57,314 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-14 18:32:57,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:57,317 INFO L225 Difference]: With dead ends: 228 [2020-10-14 18:32:57,317 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 18:32:57,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=297, Invalid=1425, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:32:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 18:32:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 160. [2020-10-14 18:32:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-14 18:32:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-10-14 18:32:57,341 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 64 [2020-10-14 18:32:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:57,342 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-10-14 18:32:57,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:32:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-10-14 18:32:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 18:32:57,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:57,343 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 18:32:57,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:32:57,344 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1902934239, now seen corresponding path program 1 times [2020-10-14 18:32:57,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:57,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521786632] [2020-10-14 18:32:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:58,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:58,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:32:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:59,244 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 18:32:59,456 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-14 18:32:59,656 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-10-14 18:32:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:32:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:59,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:59,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:32:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:59,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:59,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:32:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:32:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:59,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:59,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:32:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:59,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:32:59,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:59,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:32:59,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521786632] [2020-10-14 18:32:59,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:59,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:32:59,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590540652] [2020-10-14 18:32:59,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:32:59,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:59,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:32:59,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:32:59,980 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 21 states. [2020-10-14 18:33:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:02,298 INFO L93 Difference]: Finished difference Result 210 states and 242 transitions. [2020-10-14 18:33:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:33:02,299 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-14 18:33:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:02,302 INFO L225 Difference]: With dead ends: 210 [2020-10-14 18:33:02,302 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 18:33:02,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:33:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 18:33:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2020-10-14 18:33:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 18:33:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 196 transitions. [2020-10-14 18:33:02,335 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 196 transitions. Word has length 64 [2020-10-14 18:33:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:02,336 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 196 transitions. [2020-10-14 18:33:02,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:33:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 196 transitions. [2020-10-14 18:33:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 18:33:02,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:02,337 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:02,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:33:02,338 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1981770696, now seen corresponding path program 5 times [2020-10-14 18:33:02,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:02,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228657143] [2020-10-14 18:33:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:33:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 18:33:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:08,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:08,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:33:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:08,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:33:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:08,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:08,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:33:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:33:08,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228657143] [2020-10-14 18:33:08,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:08,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:33:08,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031603164] [2020-10-14 18:33:08,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:33:08,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:33:08,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:33:08,377 INFO L87 Difference]: Start difference. First operand 167 states and 196 transitions. Second operand 25 states. [2020-10-14 18:33:09,379 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-14 18:33:12,672 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-10-14 18:33:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:15,598 INFO L93 Difference]: Finished difference Result 322 states and 379 transitions. [2020-10-14 18:33:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-14 18:33:15,599 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 65 [2020-10-14 18:33:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:15,602 INFO L225 Difference]: With dead ends: 322 [2020-10-14 18:33:15,602 INFO L226 Difference]: Without dead ends: 320 [2020-10-14 18:33:15,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=841, Invalid=5321, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 18:33:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-14 18:33:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 158. [2020-10-14 18:33:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 18:33:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2020-10-14 18:33:15,635 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 65 [2020-10-14 18:33:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:15,635 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2020-10-14 18:33:15,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:33:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2020-10-14 18:33:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 18:33:15,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:15,637 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:15,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:33:15,637 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:15,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:15,637 INFO L82 PathProgramCache]: Analyzing trace with hash 924938970, now seen corresponding path program 6 times [2020-10-14 18:33:15,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:15,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709645647] [2020-10-14 18:33:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:15,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:20,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 18:33:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 18:33:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:33:20,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:20,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:33:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 18:33:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:21,447 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 29 [2020-10-14 18:33:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:22,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:22,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:22,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:22,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:33:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:22,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:33:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:22,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:33:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:22,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:22,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:22,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:22,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:22,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:33:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:22,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:33:22,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709645647] [2020-10-14 18:33:22,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:22,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:33:22,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741913771] [2020-10-14 18:33:22,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:33:22,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:22,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:33:22,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:33:22,193 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand 26 states. [2020-10-14 18:33:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:29,168 INFO L93 Difference]: Finished difference Result 411 states and 485 transitions. [2020-10-14 18:33:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 18:33:29,169 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 67 [2020-10-14 18:33:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:29,172 INFO L225 Difference]: With dead ends: 411 [2020-10-14 18:33:29,172 INFO L226 Difference]: Without dead ends: 361 [2020-10-14 18:33:29,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=794, Invalid=5848, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 18:33:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-14 18:33:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 161. [2020-10-14 18:33:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 18:33:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 188 transitions. [2020-10-14 18:33:29,205 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 188 transitions. Word has length 67 [2020-10-14 18:33:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:29,205 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 188 transitions. [2020-10-14 18:33:29,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:33:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 188 transitions. [2020-10-14 18:33:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 18:33:29,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:29,207 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:29,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:33:29,207 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1750781700, now seen corresponding path program 7 times [2020-10-14 18:33:29,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:29,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566743846] [2020-10-14 18:33:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:29,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:29,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:29,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:34,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:33:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:35,013 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 52 [2020-10-14 18:33:35,262 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2020-10-14 18:33:35,794 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-10-14 18:33:35,975 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-14 18:33:36,180 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-14 18:33:36,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:36,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:36,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:36,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:33:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:36,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:33:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:36,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:33:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:36,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:36,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:36,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:36,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:36,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:33:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:33:36,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566743846] [2020-10-14 18:33:36,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:36,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:33:36,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745054711] [2020-10-14 18:33:36,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:33:36,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:36,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:33:36,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:33:36,874 INFO L87 Difference]: Start difference. First operand 161 states and 188 transitions. Second operand 29 states. [2020-10-14 18:33:37,470 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 35 [2020-10-14 18:33:38,390 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2020-10-14 18:33:39,175 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2020-10-14 18:33:39,910 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2020-10-14 18:33:40,297 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 13 [2020-10-14 18:33:40,519 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-10-14 18:33:40,721 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 30 [2020-10-14 18:33:41,027 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-14 18:33:41,327 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 35 [2020-10-14 18:33:41,532 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 21 [2020-10-14 18:33:41,869 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-14 18:33:42,144 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30 [2020-10-14 18:33:42,317 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2020-10-14 18:33:42,595 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2020-10-14 18:33:42,858 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 39 [2020-10-14 18:33:43,014 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 28 [2020-10-14 18:33:43,281 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 33 [2020-10-14 18:33:43,537 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 29 [2020-10-14 18:33:43,891 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 45 [2020-10-14 18:33:44,240 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 41 [2020-10-14 18:33:44,509 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 28 [2020-10-14 18:33:44,931 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2020-10-14 18:33:45,213 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 34 [2020-10-14 18:33:45,452 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 30 [2020-10-14 18:33:45,798 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 51 [2020-10-14 18:33:46,130 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 47 [2020-10-14 18:33:46,566 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 45 [2020-10-14 18:33:46,864 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 41 [2020-10-14 18:33:47,290 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 52 [2020-10-14 18:33:47,576 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 41 [2020-10-14 18:33:47,917 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 49 [2020-10-14 18:33:48,211 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 38 [2020-10-14 18:33:48,480 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 40 [2020-10-14 18:33:48,707 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 32 [2020-10-14 18:33:48,948 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 37 [2020-10-14 18:33:49,199 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 28 [2020-10-14 18:33:49,461 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 26 [2020-10-14 18:33:50,065 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 51 [2020-10-14 18:33:50,342 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 43 [2020-10-14 18:33:50,625 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 48 [2020-10-14 18:33:50,909 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 39 [2020-10-14 18:33:51,653 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 56 [2020-10-14 18:33:52,071 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 48 [2020-10-14 18:33:52,482 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 53 [2020-10-14 18:33:52,875 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 44 [2020-10-14 18:33:53,483 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 56 [2020-10-14 18:33:53,884 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 48 [2020-10-14 18:33:54,339 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 53 [2020-10-14 18:33:54,731 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 44 [2020-10-14 18:33:55,317 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 64 [2020-10-14 18:33:55,626 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 39 [2020-10-14 18:33:56,094 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 56 [2020-10-14 18:33:56,383 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 31 [2020-10-14 18:33:56,903 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2020-10-14 18:33:57,224 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 36 [2020-10-14 18:33:57,706 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 52 [2020-10-14 18:33:58,065 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 27 [2020-10-14 18:33:58,713 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 29 [2020-10-14 18:33:59,063 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 31 [2020-10-14 18:33:59,492 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 27 [2020-10-14 18:34:02,333 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 28 [2020-10-14 18:34:02,850 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 28 [2020-10-14 18:34:03,361 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 27 [2020-10-14 18:34:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:03,365 INFO L93 Difference]: Finished difference Result 552 states and 701 transitions. [2020-10-14 18:34:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-14 18:34:03,367 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2020-10-14 18:34:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:03,371 INFO L225 Difference]: With dead ends: 552 [2020-10-14 18:34:03,371 INFO L226 Difference]: Without dead ends: 550 [2020-10-14 18:34:03,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3870 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=2130, Invalid=10526, Unknown=0, NotChecked=0, Total=12656 [2020-10-14 18:34:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-14 18:34:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 173. [2020-10-14 18:34:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 18:34:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 205 transitions. [2020-10-14 18:34:03,407 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 205 transitions. Word has length 69 [2020-10-14 18:34:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:03,407 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 205 transitions. [2020-10-14 18:34:03,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:34:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 205 transitions. [2020-10-14 18:34:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:34:03,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:03,409 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:03,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:34:03,409 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:03,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash 572401424, now seen corresponding path program 9 times [2020-10-14 18:34:03,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:03,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332196528] [2020-10-14 18:34:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2578 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 18:34:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 18:34:06,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:34:06,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:34:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:34:06,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:34:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:34:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:06,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:34:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:06,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:34:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:34:06,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332196528] [2020-10-14 18:34:06,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:06,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:34:06,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014392142] [2020-10-14 18:34:06,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:34:06,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:06,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:34:06,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:34:06,361 INFO L87 Difference]: Start difference. First operand 173 states and 205 transitions. Second operand 13 states. [2020-10-14 18:34:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:07,277 INFO L93 Difference]: Finished difference Result 222 states and 259 transitions. [2020-10-14 18:34:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:34:07,279 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-14 18:34:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:07,280 INFO L225 Difference]: With dead ends: 222 [2020-10-14 18:34:07,281 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 18:34:07,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:34:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 18:34:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2020-10-14 18:34:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 18:34:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-10-14 18:34:07,307 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 72 [2020-10-14 18:34:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:07,308 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-10-14 18:34:07,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:34:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-10-14 18:34:07,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 18:34:07,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:07,309 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:07,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:34:07,310 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:07,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:07,310 INFO L82 PathProgramCache]: Analyzing trace with hash -432935266, now seen corresponding path program 8 times [2020-10-14 18:34:07,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:07,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649549378] [2020-10-14 18:34:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:07,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:12,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:12,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 18:34:12,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:34:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 18:34:12,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:12,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:34:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:34:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:34:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:34:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:13,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:13,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:34:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:13,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:13,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:34:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:34:13,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:13,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:34:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:34:13,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649549378] [2020-10-14 18:34:13,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:13,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:34:13,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499189946] [2020-10-14 18:34:13,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:34:13,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:13,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:34:13,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:34:13,383 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 16 states. [2020-10-14 18:34:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:15,731 INFO L93 Difference]: Finished difference Result 295 states and 345 transitions. [2020-10-14 18:34:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:34:15,735 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-14 18:34:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:15,737 INFO L225 Difference]: With dead ends: 295 [2020-10-14 18:34:15,737 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 18:34:15,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:34:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 18:34:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 156. [2020-10-14 18:34:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 18:34:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2020-10-14 18:34:15,765 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 71 [2020-10-14 18:34:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:15,766 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2020-10-14 18:34:15,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:34:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2020-10-14 18:34:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:34:15,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:15,767 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:34:15,768 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1256829523, now seen corresponding path program 10 times [2020-10-14 18:34:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:15,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852342827] [2020-10-14 18:34:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:17,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2087 [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:34:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:34:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:34:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:18,576 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-10-14 18:34:18,802 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-14 18:34:19,321 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 19 [2020-10-14 18:34:19,472 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-14 18:34:19,665 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-14 18:34:19,871 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-10-14 18:34:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:20,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:20,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:34:20,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:20,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:20,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:20,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:20,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:20,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:34:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:20,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:20,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:20,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:34:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:20,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:20,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:20,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:20,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:20,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:20,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:20,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:34:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:20,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:20,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:34:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:20,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:20,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 18:34:20,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852342827] [2020-10-14 18:34:20,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:20,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:34:20,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343974003] [2020-10-14 18:34:20,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:34:20,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:20,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:34:20,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:34:20,226 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand 23 states. [2020-10-14 18:34:20,662 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-10-14 18:34:21,543 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-10-14 18:34:21,941 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-10-14 18:34:22,573 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-14 18:34:22,766 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-14 18:34:22,926 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 35 [2020-10-14 18:34:23,416 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-14 18:34:24,282 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-14 18:34:24,769 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-14 18:34:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:25,679 INFO L93 Difference]: Finished difference Result 218 states and 259 transitions. [2020-10-14 18:34:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:34:25,681 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 73 [2020-10-14 18:34:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:25,683 INFO L225 Difference]: With dead ends: 218 [2020-10-14 18:34:25,683 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 18:34:25,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:34:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 18:34:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 182. [2020-10-14 18:34:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 18:34:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 217 transitions. [2020-10-14 18:34:25,713 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 217 transitions. Word has length 73 [2020-10-14 18:34:25,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:25,714 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 217 transitions. [2020-10-14 18:34:25,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:34:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 217 transitions. [2020-10-14 18:34:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:34:25,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:25,715 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:25,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:34:25,715 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:25,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1329216081, now seen corresponding path program 2 times [2020-10-14 18:34:25,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:25,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323587561] [2020-10-14 18:34:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:25,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:34:30,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:34:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 18:34:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:30,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:34:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:34:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:34:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:32,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:34:32,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:32,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:32,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:32,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:34:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:32,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:32,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:32,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:32,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:34:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:32,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:34:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:32,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:32,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:34:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:32,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:32,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 7 proven. 67 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 18:34:32,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323587561] [2020-10-14 18:34:32,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:32,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:34:32,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084748820] [2020-10-14 18:34:32,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:34:32,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:34:32,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:34:32,489 INFO L87 Difference]: Start difference. First operand 182 states and 217 transitions. Second operand 24 states. [2020-10-14 18:34:34,770 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2020-10-14 18:34:35,936 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-14 18:34:36,319 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-10-14 18:34:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:41,354 INFO L93 Difference]: Finished difference Result 285 states and 335 transitions. [2020-10-14 18:34:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-14 18:34:41,355 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 73 [2020-10-14 18:34:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:41,358 INFO L225 Difference]: With dead ends: 285 [2020-10-14 18:34:41,358 INFO L226 Difference]: Without dead ends: 283 [2020-10-14 18:34:41,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=608, Invalid=3948, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 18:34:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-14 18:34:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 162. [2020-10-14 18:34:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 18:34:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 195 transitions. [2020-10-14 18:34:41,393 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 195 transitions. Word has length 73 [2020-10-14 18:34:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:41,393 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 195 transitions. [2020-10-14 18:34:41,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:34:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 195 transitions. [2020-10-14 18:34:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:34:41,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:41,395 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:41,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:34:41,395 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:41,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2008778475, now seen corresponding path program 3 times [2020-10-14 18:34:41,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:41,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677981318] [2020-10-14 18:34:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:41,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:34:43,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-14 18:34:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:43,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:34:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:34:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:34:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:44,243 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2020-10-14 18:34:44,579 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-14 18:34:44,896 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-10-14 18:34:45,319 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-14 18:34:45,628 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-14 18:34:45,920 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-14 18:34:46,239 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-14 18:34:46,572 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-10-14 18:34:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:34:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:34:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:47,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:34:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:47,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:34:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:47,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 18:34:47,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677981318] [2020-10-14 18:34:47,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:47,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:34:47,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649624997] [2020-10-14 18:34:47,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:34:47,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:47,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:34:47,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:34:47,075 INFO L87 Difference]: Start difference. First operand 162 states and 195 transitions. Second operand 25 states. [2020-10-14 18:34:47,893 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 100 [2020-10-14 18:34:49,136 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 136 DAG size of output: 107 [2020-10-14 18:34:50,875 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-14 18:34:51,171 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 18:34:51,381 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-14 18:34:51,562 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-14 18:34:51,745 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-14 18:34:51,979 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-14 18:34:52,951 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-10-14 18:34:53,210 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-14 18:34:53,663 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-10-14 18:34:54,664 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-14 18:34:55,480 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-10-14 18:34:56,581 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2020-10-14 18:34:57,676 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 118 [2020-10-14 18:34:59,084 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2020-10-14 18:34:59,852 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-14 18:35:00,942 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-10-14 18:35:01,711 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-14 18:35:02,396 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-14 18:35:02,993 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-10-14 18:35:03,854 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-10-14 18:35:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:35:03,859 INFO L93 Difference]: Finished difference Result 253 states and 303 transitions. [2020-10-14 18:35:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 18:35:03,859 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 73 [2020-10-14 18:35:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:35:03,860 INFO L225 Difference]: With dead ends: 253 [2020-10-14 18:35:03,861 INFO L226 Difference]: Without dead ends: 251 [2020-10-14 18:35:03,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=696, Invalid=3594, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 18:35:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-14 18:35:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 187. [2020-10-14 18:35:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 18:35:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 224 transitions. [2020-10-14 18:35:03,931 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 224 transitions. Word has length 73 [2020-10-14 18:35:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:35:03,931 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 224 transitions. [2020-10-14 18:35:03,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:35:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 224 transitions. [2020-10-14 18:35:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:35:03,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:35:03,936 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:35:03,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:35:03,937 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:35:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:35:03,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1936391917, now seen corresponding path program 4 times [2020-10-14 18:35:03,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:35:03,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467497107] [2020-10-14 18:35:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:35:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:08,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:35:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:09,210 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2020-10-14 18:35:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:35:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:35:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:35:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:35:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:11,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:35:11,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:11,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:35:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:35:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:35:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:35:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:11,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:11,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:35:11,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:11,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:11,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:35:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:35:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:35:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:35:11,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:35:11,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:35:11,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:35:11,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:35:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:35:11,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:35:11,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:35:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:35:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:35:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:35:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:35:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 18:35:11,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467497107] [2020-10-14 18:35:11,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:35:11,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:35:11,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766482667] [2020-10-14 18:35:11,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:35:11,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:35:11,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:35:11,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:35:11,468 INFO L87 Difference]: Start difference. First operand 187 states and 224 transitions. Second operand 25 states. [2020-10-14 18:35:12,164 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23