/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 SingleStatement --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:30:24,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:30:24,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:30:24,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:30:24,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:30:24,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:30:24,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:30:24,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:30:24,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:30:24,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:30:24,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:30:24,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:30:24,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:30:24,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:30:24,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:30:24,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:30:24,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:30:24,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:30:24,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:30:24,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:30:24,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:30:24,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:30:24,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:30:24,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:30:24,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:30:24,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:30:24,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:30:24,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:30:24,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:30:24,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:30:24,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:30:24,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:30:24,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:30:24,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:30:24,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:30:24,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:30:24,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:30:24,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:30:24,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:30:24,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:30:24,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:30:24,470 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 [2020-09-25 12:30:24,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:30:24,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:30:24,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:30:24,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:30:24,521 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:30:24,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:30:24,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:30:24,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:30:24,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:30:24,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:30:24,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:30:24,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:30:24,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:30:24,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:30:24,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:30:24,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:30:24,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:30:24,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:30:24,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:30:24,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:30:24,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:30:24,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:30:24,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:30:24,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:30:24,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:30:24,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:30:24,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:30:24,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:30:24,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:30:24,528 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 -> SingleStatement 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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=true; [2020-09-25 12:30:25,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:30:25,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:30:25,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:30:25,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:30:25,053 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:30:25,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 12:30:25,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15f0ca597/4483a865f4c644d192693ed4ef780de4/FLAGdf1e33556 [2020-09-25 12:30:25,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:30:25,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 12:30:25,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15f0ca597/4483a865f4c644d192693ed4ef780de4/FLAGdf1e33556 [2020-09-25 12:30:26,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15f0ca597/4483a865f4c644d192693ed4ef780de4 [2020-09-25 12:30:26,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:30:26,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:30:26,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:30:26,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:30:26,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:30:26,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32333996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26, skipping insertion in model container [2020-09-25 12:30:26,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:30:26,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:30:26,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:30:26,356 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:30:26,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:30:26,393 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:30:26,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26 WrapperNode [2020-09-25 12:30:26,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:30:26,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:30:26,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:30:26,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:30:26,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (1/1) ... [2020-09-25 12:30:26,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:30:26,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:30:26,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:30:26,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:30:26,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (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 [2020-09-25 12:30:26,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:30:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:30:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:30:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 12:30:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:30:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:30:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:30:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:30:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 12:30:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:30:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:30:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:30:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:30:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:30:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:30:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:30:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:30:26,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:30:26,917 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 12:30:26,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:30:26 BoogieIcfgContainer [2020-09-25 12:30:26,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:30:26,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:30:26,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:30:26,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:30:26,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:30:26" (1/3) ... [2020-09-25 12:30:26,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7bd94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:30:26, skipping insertion in model container [2020-09-25 12:30:26,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:30:26" (2/3) ... [2020-09-25 12:30:26,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7bd94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:30:26, skipping insertion in model container [2020-09-25 12:30:26,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:30:26" (3/3) ... [2020-09-25 12:30:26,936 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 12:30:26,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:30:26,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:30:26,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:30:27,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:30:27,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:30:27,029 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:30:27,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:30:27,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:30:27,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:30:27,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:30:27,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:30:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 12:30:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 12:30:27,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:27,070 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] [2020-09-25 12:30:27,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 12:30:27,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:27,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667039829] [2020-09-25 12:30:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:27,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:30:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:30:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 12:30:27,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:27,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:30:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 12:30:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 12:30:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:30:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:27,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:27,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:27,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:27,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:27,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:30:27,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:27,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:27,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:27,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:30:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:30:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:30:27,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:27,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:30:27,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667039829] [2020-09-25 12:30:27,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:30:27,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:30:27,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227427743] [2020-09-25 12:30:27,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:30:27,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:30:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:30:27,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:30:27,807 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-09-25 12:30:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:30:28,142 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-09-25 12:30:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:30:28,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 12:30:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:30:28,162 INFO L225 Difference]: With dead ends: 109 [2020-09-25 12:30:28,162 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 12:30:28,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:30:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 12:30:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 12:30:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:30:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 12:30:28,235 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 12:30:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:30:28,236 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 12:30:28,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:30:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 12:30:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 12:30:28,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:28,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:30:28,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:30:28,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 12:30:28,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:28,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185147475] [2020-09-25 12:30:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:28,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:28,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:30,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:30:30,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:30:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1882 [2020-09-25 12:30:30,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:30,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:30:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 12:30:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:30:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:30:30,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:30,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:30,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:30,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:30:30,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:30:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:30:30,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:30,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:30:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:30:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:30:30,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:30:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:30:30,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185147475] [2020-09-25 12:30:30,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:30:30,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:30:30,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872387445] [2020-09-25 12:30:30,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:30:30,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:30:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:30:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:30:30,519 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 14 states. [2020-09-25 12:30:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:30:31,680 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2020-09-25 12:30:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:30:31,681 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-09-25 12:30:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:30:31,684 INFO L225 Difference]: With dead ends: 128 [2020-09-25 12:30:31,684 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 12:30:31,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:30:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 12:30:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2020-09-25 12:30:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 12:30:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-09-25 12:30:31,728 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2020-09-25 12:30:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:30:31,729 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-09-25 12:30:31,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:30:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-09-25 12:30:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 12:30:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:31,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:30:31,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:30:31,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash -253984627, now seen corresponding path program 1 times [2020-09-25 12:30:31,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:31,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125140413] [2020-09-25 12:30:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:33,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:33,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:30:33,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:30:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1417 [2020-09-25 12:30:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:33,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:30:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 12:30:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:30:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:30:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:33,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:33,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:33,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:33,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:30:33,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:30:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 12:30:33,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:33,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:30:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:30:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:30:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:30:33,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125140413] [2020-09-25 12:30:33,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:30:33,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:30:33,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840027370] [2020-09-25 12:30:33,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:30:33,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:30:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:30:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:30:33,627 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 12 states. [2020-09-25 12:30:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:30:34,359 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2020-09-25 12:30:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:30:34,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-09-25 12:30:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:30:34,362 INFO L225 Difference]: With dead ends: 161 [2020-09-25 12:30:34,362 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 12:30:34,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:30:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 12:30:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2020-09-25 12:30:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 12:30:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-09-25 12:30:34,390 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 43 [2020-09-25 12:30:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:30:34,395 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-09-25 12:30:34,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:30:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-09-25 12:30:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:30:34,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:34,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:30:34,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:30:34,400 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 454063719, now seen corresponding path program 1 times [2020-09-25 12:30:34,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:34,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571933696] [2020-09-25 12:30:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:39,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:39,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 12:30:39,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:30:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:30:39,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:39,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:30:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:30:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:30:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:30:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:39,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:40,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:40,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:30:40,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:30:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-25 12:30:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:40,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:30:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:30:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:30:40,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571933696] [2020-09-25 12:30:40,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:30:40,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:30:40,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258915095] [2020-09-25 12:30:40,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:30:40,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:30:40,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:30:40,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:30:40,285 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 15 states. [2020-09-25 12:30:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:30:40,909 INFO L93 Difference]: Finished difference Result 206 states and 234 transitions. [2020-09-25 12:30:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:30:40,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 12:30:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:30:40,912 INFO L225 Difference]: With dead ends: 206 [2020-09-25 12:30:40,912 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 12:30:40,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-09-25 12:30:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 12:30:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 115. [2020-09-25 12:30:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 12:30:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-09-25 12:30:40,929 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 56 [2020-09-25 12:30:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:30:40,929 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-09-25 12:30:40,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:30:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-09-25 12:30:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 12:30:40,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:40,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:30:40,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:30:40,932 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:40,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2131548095, now seen corresponding path program 2 times [2020-09-25 12:30:40,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:40,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043110637] [2020-09-25 12:30:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:44,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:30:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:30:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3456 [2020-09-25 12:30:44,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:44,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:30:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:30:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:30:44,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:44,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:44,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:44,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:44,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:44,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:30:44,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:44,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:44,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:44,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:30:44,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:30:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 12:30:44,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:44,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:30:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:30:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:30:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:30:44,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043110637] [2020-09-25 12:30:44,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:30:44,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:30:44,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126147608] [2020-09-25 12:30:44,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:30:44,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:30:44,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:30:44,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:30:44,796 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 16 states. [2020-09-25 12:30:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:30:45,462 INFO L93 Difference]: Finished difference Result 200 states and 224 transitions. [2020-09-25 12:30:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 12:30:45,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-09-25 12:30:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:30:45,466 INFO L225 Difference]: With dead ends: 200 [2020-09-25 12:30:45,467 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 12:30:45,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2020-09-25 12:30:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 12:30:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 112. [2020-09-25 12:30:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 12:30:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-09-25 12:30:45,489 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 57 [2020-09-25 12:30:45,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:30:45,492 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-09-25 12:30:45,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:30:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-09-25 12:30:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:30:45,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:45,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:30:45,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:30:45,497 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:45,498 INFO L82 PathProgramCache]: Analyzing trace with hash 476056261, now seen corresponding path program 2 times [2020-09-25 12:30:45,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:45,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773153001] [2020-09-25 12:30:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:45,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:49,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:49,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:50,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:50,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:30:50,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:30:50,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:30:50,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:50,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:50,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:30:50,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:30:50,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:30:50,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:30:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:52,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:30:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:30:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1420 [2020-09-25 12:30:52,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:52,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:30:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:30:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:30:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 12:30:52,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773153001] [2020-09-25 12:30:52,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:30:52,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 12:30:52,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571870981] [2020-09-25 12:30:52,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 12:30:52,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:30:52,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 12:30:52,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:30:52,306 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 18 states. [2020-09-25 12:30:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:30:52,915 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2020-09-25 12:30:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:30:52,916 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-09-25 12:30:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:30:52,920 INFO L225 Difference]: With dead ends: 199 [2020-09-25 12:30:52,920 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 12:30:52,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:30:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 12:30:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2020-09-25 12:30:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 12:30:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-09-25 12:30:52,941 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 69 [2020-09-25 12:30:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:30:52,942 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-09-25 12:30:52,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 12:30:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-09-25 12:30:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 12:30:52,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:30:52,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:30:52,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:30:52,944 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:30:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:30:52,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2133089599, now seen corresponding path program 3 times [2020-09-25 12:30:52,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:30:52,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922618372] [2020-09-25 12:30:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:30:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:57,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:57,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 12:30:57,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:30:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:30:57,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:57,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:30:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:30:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:30:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:30:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:30:58,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:30:58,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:30:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:30:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:30:58,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:30:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:30:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:30:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:30:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:30:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:30:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:30:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:30:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:31:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:31:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:31:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:03,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:31:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:31:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:31:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:31:03,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922618372] [2020-09-25 12:31:03,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:31:03,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:31:03,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375711307] [2020-09-25 12:31:03,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:31:03,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:03,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:31:03,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:31:03,359 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 17 states. [2020-09-25 12:31:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:03,946 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2020-09-25 12:31:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:31:03,947 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-09-25 12:31:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:03,948 INFO L225 Difference]: With dead ends: 175 [2020-09-25 12:31:03,948 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 12:31:03,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:31:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 12:31:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2020-09-25 12:31:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 12:31:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-09-25 12:31:03,956 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 75 [2020-09-25 12:31:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:03,956 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-09-25 12:31:03,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:31:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-09-25 12:31:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:31:03,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:03,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:03,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:31:03,959 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash 172747959, now seen corresponding path program 4 times [2020-09-25 12:31:03,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:03,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088173826] [2020-09-25 12:31:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:31:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:31:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:31:08,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:08,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:31:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:31:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:31:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:09,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:31:09,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:09,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:31:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:10,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:12,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:12,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:31:12,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:31:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3410 [2020-09-25 12:31:12,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:12,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:31:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:31:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:31:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 12:31:12,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088173826] [2020-09-25 12:31:12,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:31:12,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 12:31:12,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829666201] [2020-09-25 12:31:12,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 12:31:12,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:12,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 12:31:12,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:31:12,870 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 18 states. [2020-09-25 12:31:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:13,980 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2020-09-25 12:31:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:31:13,981 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-09-25 12:31:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:13,983 INFO L225 Difference]: With dead ends: 155 [2020-09-25 12:31:13,983 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 12:31:13,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 12:31:13,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 12:31:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2020-09-25 12:31:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 12:31:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-09-25 12:31:13,998 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 76 [2020-09-25 12:31:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:13,999 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-09-25 12:31:13,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 12:31:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-09-25 12:31:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 12:31:14,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:14,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:14,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:31:14,001 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:14,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2032565233, now seen corresponding path program 3 times [2020-09-25 12:31:14,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:14,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205143501] [2020-09-25 12:31:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking...