/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:11:35,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:11:35,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:11:35,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:11:35,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:11:35,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:11:35,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:11:35,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:11:35,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:11:35,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:11:35,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:11:35,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:11:35,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:11:35,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:11:35,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:11:35,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:11:35,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:11:35,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:11:35,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:11:35,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:11:35,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:11:35,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:11:35,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:11:35,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:11:35,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:11:35,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:11:35,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:11:35,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:11:35,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:11:35,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:11:35,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:11:35,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:11:35,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:11:35,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:11:35,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:11:35,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:11:35,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:11:35,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:11:35,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:11:35,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:11:35,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:11:35,475 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 [2020-10-28 17:11:35,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:11:35,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:11:35,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:11:35,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:11:35,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:11:35,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:11:35,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:11:35,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:11:35,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:11:35,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:11:35,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:11:35,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:11:35,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:11:35,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:11:35,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:11:35,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:11:35,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:11:35,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:11:35,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:11:35,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:11:35,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:11:35,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:11:35,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:11:35,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:11:35,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:11:35,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:11:35,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:11:35,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:11:35,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:11:35,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:11:35,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:11:35,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:11:35,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:11:35,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:11:35,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:11:35,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2020-10-28 17:11:35,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdfb39838/ef8cb094c26c42d2b583509f754913c1/FLAG13f257431 [2020-10-28 17:11:36,569 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:11:36,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2020-10-28 17:11:36,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdfb39838/ef8cb094c26c42d2b583509f754913c1/FLAG13f257431 [2020-10-28 17:11:36,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdfb39838/ef8cb094c26c42d2b583509f754913c1 [2020-10-28 17:11:36,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:11:36,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:11:36,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:11:36,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:11:36,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:11:36,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:11:36" (1/1) ... [2020-10-28 17:11:36,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a6a153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:36, skipping insertion in model container [2020-10-28 17:11:36,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:11:36" (1/1) ... [2020-10-28 17:11:36,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:11:36,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:11:37,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:11:37,251 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:11:37,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:11:37,456 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:11:37,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37 WrapperNode [2020-10-28 17:11:37,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:11:37,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:11:37,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:11:37,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:11:37,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... [2020-10-28 17:11:37,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:11:37,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:11:37,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:11:37,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:11:37,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:11:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:11:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:11:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:11:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:11:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:11:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:11:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:11:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:11:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:11:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:11:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:11:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:11:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:11:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:11:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:11:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:11:38,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:11:38,911 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 17:11:38,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:11:38 BoogieIcfgContainer [2020-10-28 17:11:38,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:11:38,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:11:38,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:11:38,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:11:38,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:11:36" (1/3) ... [2020-10-28 17:11:38,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf8fe57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:11:38, skipping insertion in model container [2020-10-28 17:11:38,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:11:37" (2/3) ... [2020-10-28 17:11:38,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf8fe57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:11:38, skipping insertion in model container [2020-10-28 17:11:38,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:11:38" (3/3) ... [2020-10-28 17:11:38,923 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2020-10-28 17:11:38,935 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:11:38,941 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:11:38,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:11:38,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:11:38,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:11:38,982 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:11:38,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:11:38,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:11:38,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:11:38,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:11:38,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:11:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-10-28 17:11:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 17:11:39,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:39,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:39,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1887813396, now seen corresponding path program 1 times [2020-10-28 17:11:39,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:39,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899687583] [2020-10-28 17:11:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:11:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 17:11:39,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:39,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:11:39,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:39,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:39,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:39,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:11:39,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:39,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:39,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899687583] [2020-10-28 17:11:39,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:39,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:11:39,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803324336] [2020-10-28 17:11:39,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:11:39,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:39,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:11:39,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:11:39,622 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-10-28 17:11:39,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:39,717 INFO L93 Difference]: Finished difference Result 227 states and 428 transitions. [2020-10-28 17:11:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:11:39,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-28 17:11:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:39,743 INFO L225 Difference]: With dead ends: 227 [2020-10-28 17:11:39,744 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 17:11:39,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:11:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 17:11:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-28 17:11:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 17:11:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 170 transitions. [2020-10-28 17:11:39,854 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 170 transitions. Word has length 14 [2020-10-28 17:11:39,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:39,855 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 170 transitions. [2020-10-28 17:11:39,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:11:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 170 transitions. [2020-10-28 17:11:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:11:39,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:39,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:39,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:11:39,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2014877916, now seen corresponding path program 1 times [2020-10-28 17:11:39,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:39,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220036062] [2020-10-28 17:11:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 17:11:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-28 17:11:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:40,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:11:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:11:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:11:40,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:40,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:40,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:40,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:11:40,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:40,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:11:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:40,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220036062] [2020-10-28 17:11:40,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:40,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:40,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452931714] [2020-10-28 17:11:40,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:40,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:40,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:40,295 INFO L87 Difference]: Start difference. First operand 105 states and 170 transitions. Second operand 4 states. [2020-10-28 17:11:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:41,103 INFO L93 Difference]: Finished difference Result 212 states and 348 transitions. [2020-10-28 17:11:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:41,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 17:11:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:41,108 INFO L225 Difference]: With dead ends: 212 [2020-10-28 17:11:41,108 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 17:11:41,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 17:11:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-28 17:11:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 17:11:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 179 transitions. [2020-10-28 17:11:41,134 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 179 transitions. Word has length 15 [2020-10-28 17:11:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:41,135 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 179 transitions. [2020-10-28 17:11:41,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 179 transitions. [2020-10-28 17:11:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 17:11:41,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:41,136 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:41,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:11:41,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1446240111, now seen corresponding path program 1 times [2020-10-28 17:11:41,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:41,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975757193] [2020-10-28 17:11:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:41,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:11:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 17:11:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:41,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:11:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:41,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:41,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:41,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:11:41,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:41,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:41,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975757193] [2020-10-28 17:11:41,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:41,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:41,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927410230] [2020-10-28 17:11:41,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:41,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:41,580 INFO L87 Difference]: Start difference. First operand 113 states and 179 transitions. Second operand 4 states. [2020-10-28 17:11:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:42,215 INFO L93 Difference]: Finished difference Result 221 states and 353 transitions. [2020-10-28 17:11:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:42,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 17:11:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:42,220 INFO L225 Difference]: With dead ends: 221 [2020-10-28 17:11:42,220 INFO L226 Difference]: Without dead ends: 201 [2020-10-28 17:11:42,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-28 17:11:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 182. [2020-10-28 17:11:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-28 17:11:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 292 transitions. [2020-10-28 17:11:42,257 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 292 transitions. Word has length 20 [2020-10-28 17:11:42,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:42,257 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 292 transitions. [2020-10-28 17:11:42,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 292 transitions. [2020-10-28 17:11:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 17:11:42,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:42,259 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:42,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:11:42,259 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:42,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1800510623, now seen corresponding path program 1 times [2020-10-28 17:11:42,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:42,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211954650] [2020-10-28 17:11:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:42,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:42,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 17:11:42,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 17:11:42,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:42,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:11:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:11:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:42,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:42,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:42,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:11:42,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:42,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:42,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211954650] [2020-10-28 17:11:42,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:42,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:42,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370871236] [2020-10-28 17:11:42,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:42,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:42,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:42,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:42,567 INFO L87 Difference]: Start difference. First operand 182 states and 292 transitions. Second operand 4 states. [2020-10-28 17:11:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:42,993 INFO L93 Difference]: Finished difference Result 319 states and 514 transitions. [2020-10-28 17:11:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:42,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 17:11:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:42,996 INFO L225 Difference]: With dead ends: 319 [2020-10-28 17:11:42,996 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 17:11:43,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 17:11:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-10-28 17:11:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 17:11:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 219 transitions. [2020-10-28 17:11:43,033 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 219 transitions. Word has length 21 [2020-10-28 17:11:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:43,034 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 219 transitions. [2020-10-28 17:11:43,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 219 transitions. [2020-10-28 17:11:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 17:11:43,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:43,040 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:43,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:11:43,040 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1735438414, now seen corresponding path program 1 times [2020-10-28 17:11:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:43,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415993409] [2020-10-28 17:11:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:43,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:11:43,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 17:11:43,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:43,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:11:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:11:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:43,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:11:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:43,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:11:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:11:43,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415993409] [2020-10-28 17:11:43,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:43,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:43,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487312920] [2020-10-28 17:11:43,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:43,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:43,321 INFO L87 Difference]: Start difference. First operand 142 states and 219 transitions. Second operand 4 states. [2020-10-28 17:11:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:43,505 INFO L93 Difference]: Finished difference Result 262 states and 405 transitions. [2020-10-28 17:11:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:43,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 17:11:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:43,507 INFO L225 Difference]: With dead ends: 262 [2020-10-28 17:11:43,507 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 17:11:43,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 17:11:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-28 17:11:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 17:11:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 188 transitions. [2020-10-28 17:11:43,521 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 188 transitions. Word has length 26 [2020-10-28 17:11:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:43,521 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 188 transitions. [2020-10-28 17:11:43,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 188 transitions. [2020-10-28 17:11:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 17:11:43,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:43,522 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:43,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:11:43,523 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1970078803, now seen corresponding path program 1 times [2020-10-28 17:11:43,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:43,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717195849] [2020-10-28 17:11:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:43,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:43,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:11:43,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-28 17:11:43,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:43,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:11:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:11:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:44,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:44,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:44,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:44,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:44,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:11:44,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:44,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:44,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717195849] [2020-10-28 17:11:44,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:44,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:11:44,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699505044] [2020-10-28 17:11:44,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:11:44,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:44,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:11:44,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:44,116 INFO L87 Difference]: Start difference. First operand 125 states and 188 transitions. Second operand 5 states. [2020-10-28 17:11:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:44,952 INFO L93 Difference]: Finished difference Result 224 states and 341 transitions. [2020-10-28 17:11:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:11:44,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-28 17:11:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:44,958 INFO L225 Difference]: With dead ends: 224 [2020-10-28 17:11:44,958 INFO L226 Difference]: Without dead ends: 205 [2020-10-28 17:11:44,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:11:44,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-28 17:11:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2020-10-28 17:11:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 17:11:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 293 transitions. [2020-10-28 17:11:44,986 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 293 transitions. Word has length 28 [2020-10-28 17:11:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:44,986 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 293 transitions. [2020-10-28 17:11:44,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:11:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 293 transitions. [2020-10-28 17:11:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 17:11:44,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:44,996 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:11:44,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:11:44,996 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash -588157147, now seen corresponding path program 1 times [2020-10-28 17:11:44,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:44,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113758144] [2020-10-28 17:11:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:45,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:45,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 17:11:45,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:45,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-28 17:11:45,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:45,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:45,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:11:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:11:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:45,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:45,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:45,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:11:45,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:45,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:11:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:45,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113758144] [2020-10-28 17:11:45,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:45,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:11:45,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467305922] [2020-10-28 17:11:45,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:11:45,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:45,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:11:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:45,592 INFO L87 Difference]: Start difference. First operand 193 states and 293 transitions. Second operand 5 states. [2020-10-28 17:11:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:46,426 INFO L93 Difference]: Finished difference Result 262 states and 397 transitions. [2020-10-28 17:11:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:11:46,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-28 17:11:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:46,430 INFO L225 Difference]: With dead ends: 262 [2020-10-28 17:11:46,430 INFO L226 Difference]: Without dead ends: 257 [2020-10-28 17:11:46,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:11:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-28 17:11:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 238. [2020-10-28 17:11:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-28 17:11:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 367 transitions. [2020-10-28 17:11:46,447 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 367 transitions. Word has length 29 [2020-10-28 17:11:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:46,448 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 367 transitions. [2020-10-28 17:11:46,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:11:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 367 transitions. [2020-10-28 17:11:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 17:11:46,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:46,449 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:11:46,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:11:46,450 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:46,450 INFO L82 PathProgramCache]: Analyzing trace with hash -556028976, now seen corresponding path program 1 times [2020-10-28 17:11:46,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:46,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131044827] [2020-10-28 17:11:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:11:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:11:46,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:46,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:11:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:11:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:46,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:46,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:11:46,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:46,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:11:46,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131044827] [2020-10-28 17:11:46,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:46,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:46,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959185616] [2020-10-28 17:11:46,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:46,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:46,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:46,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:46,723 INFO L87 Difference]: Start difference. First operand 238 states and 367 transitions. Second operand 4 states. [2020-10-28 17:11:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:46,982 INFO L93 Difference]: Finished difference Result 463 states and 709 transitions. [2020-10-28 17:11:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:46,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-28 17:11:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:46,986 INFO L225 Difference]: With dead ends: 463 [2020-10-28 17:11:46,986 INFO L226 Difference]: Without dead ends: 231 [2020-10-28 17:11:46,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-28 17:11:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2020-10-28 17:11:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-28 17:11:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 341 transitions. [2020-10-28 17:11:47,009 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 341 transitions. Word has length 30 [2020-10-28 17:11:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:47,009 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 341 transitions. [2020-10-28 17:11:47,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 341 transitions. [2020-10-28 17:11:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 17:11:47,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:47,011 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:11:47,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:11:47,012 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:47,012 INFO L82 PathProgramCache]: Analyzing trace with hash 129799851, now seen corresponding path program 1 times [2020-10-28 17:11:47,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:47,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787526472] [2020-10-28 17:11:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:47,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:11:47,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 17:11:47,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:47,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:11:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:11:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:47,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:47,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:47,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:11:47,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:47,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:47,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:11:47,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787526472] [2020-10-28 17:11:47,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:47,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:47,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54735766] [2020-10-28 17:11:47,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:47,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:47,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:47,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:47,344 INFO L87 Difference]: Start difference. First operand 230 states and 341 transitions. Second operand 4 states. [2020-10-28 17:11:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:47,455 INFO L93 Difference]: Finished difference Result 235 states and 345 transitions. [2020-10-28 17:11:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:47,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-28 17:11:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:47,458 INFO L225 Difference]: With dead ends: 235 [2020-10-28 17:11:47,458 INFO L226 Difference]: Without dead ends: 228 [2020-10-28 17:11:47,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-28 17:11:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2020-10-28 17:11:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-28 17:11:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 332 transitions. [2020-10-28 17:11:47,478 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 332 transitions. Word has length 32 [2020-10-28 17:11:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:47,478 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 332 transitions. [2020-10-28 17:11:47,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 332 transitions. [2020-10-28 17:11:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 17:11:47,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:47,482 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 17:11:47,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:11:47,483 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1511683649, now seen corresponding path program 1 times [2020-10-28 17:11:47,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:47,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242334754] [2020-10-28 17:11:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:48,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:48,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:11:48,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:11:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-28 17:11:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:48,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:11:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:11:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:48,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:48,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:48,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:11:48,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:48,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 17:11:48,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242334754] [2020-10-28 17:11:48,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:48,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:48,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727236614] [2020-10-28 17:11:48,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:48,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:48,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:48,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:48,430 INFO L87 Difference]: Start difference. First operand 226 states and 332 transitions. Second operand 4 states. [2020-10-28 17:11:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:48,683 INFO L93 Difference]: Finished difference Result 447 states and 659 transitions. [2020-10-28 17:11:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:48,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-28 17:11:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:48,686 INFO L225 Difference]: With dead ends: 447 [2020-10-28 17:11:48,686 INFO L226 Difference]: Without dead ends: 227 [2020-10-28 17:11:48,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:48,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-28 17:11:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2020-10-28 17:11:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-28 17:11:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 330 transitions. [2020-10-28 17:11:48,703 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 330 transitions. Word has length 37 [2020-10-28 17:11:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:48,706 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 330 transitions. [2020-10-28 17:11:48,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 330 transitions. [2020-10-28 17:11:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:11:48,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:48,708 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 17:11:48,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:11:48,708 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:48,709 INFO L82 PathProgramCache]: Analyzing trace with hash -992949778, now seen corresponding path program 1 times [2020-10-28 17:11:48,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:48,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453933246] [2020-10-28 17:11:48,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:49,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:49,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:11:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-28 17:11:49,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:49,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:11:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:11:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:49,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:49,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:49,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:49,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:11:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:49,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:49,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:11:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 17:11:49,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453933246] [2020-10-28 17:11:49,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:49,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:11:49,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014709835] [2020-10-28 17:11:49,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:11:49,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:49,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:11:49,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:49,518 INFO L87 Difference]: Start difference. First operand 226 states and 330 transitions. Second operand 5 states. [2020-10-28 17:11:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:50,252 INFO L93 Difference]: Finished difference Result 312 states and 452 transitions. [2020-10-28 17:11:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:11:50,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-28 17:11:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:50,255 INFO L225 Difference]: With dead ends: 312 [2020-10-28 17:11:50,255 INFO L226 Difference]: Without dead ends: 306 [2020-10-28 17:11:50,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:11:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-28 17:11:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 279. [2020-10-28 17:11:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-28 17:11:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 411 transitions. [2020-10-28 17:11:50,274 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 411 transitions. Word has length 38 [2020-10-28 17:11:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:50,274 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 411 transitions. [2020-10-28 17:11:50,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:11:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 411 transitions. [2020-10-28 17:11:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 17:11:50,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:50,276 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 17:11:50,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:11:50,276 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1361904429, now seen corresponding path program 1 times [2020-10-28 17:11:50,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:50,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975978564] [2020-10-28 17:11:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:50,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:50,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:11:50,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-28 17:11:50,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:50,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:11:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:11:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:50,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:50,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:50,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:50,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:11:50,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:50,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:50,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975978564] [2020-10-28 17:11:50,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:50,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:11:50,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213206530] [2020-10-28 17:11:50,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:11:50,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:50,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:11:50,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:11:50,946 INFO L87 Difference]: Start difference. First operand 279 states and 411 transitions. Second operand 6 states. [2020-10-28 17:11:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:51,950 INFO L93 Difference]: Finished difference Result 296 states and 430 transitions. [2020-10-28 17:11:51,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:11:51,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-28 17:11:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:51,954 INFO L225 Difference]: With dead ends: 296 [2020-10-28 17:11:51,954 INFO L226 Difference]: Without dead ends: 293 [2020-10-28 17:11:51,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:11:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-28 17:11:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 280. [2020-10-28 17:11:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-28 17:11:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 412 transitions. [2020-10-28 17:11:51,972 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 412 transitions. Word has length 41 [2020-10-28 17:11:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:51,973 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 412 transitions. [2020-10-28 17:11:51,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:11:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 412 transitions. [2020-10-28 17:11:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 17:11:51,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:51,975 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 17:11:51,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:11:51,975 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:51,975 INFO L82 PathProgramCache]: Analyzing trace with hash 318032384, now seen corresponding path program 1 times [2020-10-28 17:11:51,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:51,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760792795] [2020-10-28 17:11:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:52,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:11:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 17:11:52,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:52,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:11:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:11:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:52,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:52,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:11:52,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:52,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 17:11:52,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760792795] [2020-10-28 17:11:52,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:52,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:52,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083680269] [2020-10-28 17:11:52,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:52,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:52,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:52,235 INFO L87 Difference]: Start difference. First operand 280 states and 412 transitions. Second operand 4 states. [2020-10-28 17:11:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:52,444 INFO L93 Difference]: Finished difference Result 538 states and 787 transitions. [2020-10-28 17:11:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:52,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 17:11:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:52,447 INFO L225 Difference]: With dead ends: 538 [2020-10-28 17:11:52,447 INFO L226 Difference]: Without dead ends: 264 [2020-10-28 17:11:52,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-28 17:11:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2020-10-28 17:11:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-28 17:11:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 377 transitions. [2020-10-28 17:11:52,468 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 377 transitions. Word has length 42 [2020-10-28 17:11:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:52,469 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 377 transitions. [2020-10-28 17:11:52,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 377 transitions. [2020-10-28 17:11:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 17:11:52,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:52,470 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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] [2020-10-28 17:11:52,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:11:52,471 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:52,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1057645166, now seen corresponding path program 1 times [2020-10-28 17:11:52,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:52,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219814663] [2020-10-28 17:11:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:53,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 17:11:53,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:11:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-28 17:11:53,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:53,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:11:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 17:11:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:11:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:53,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:53,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:53,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:53,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:11:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:53,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 17:11:53,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219814663] [2020-10-28 17:11:53,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:11:53,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:11:53,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604616098] [2020-10-28 17:11:53,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:11:53,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:53,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:11:53,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:11:53,154 INFO L87 Difference]: Start difference. First operand 263 states and 377 transitions. Second operand 4 states. [2020-10-28 17:11:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:53,433 INFO L93 Difference]: Finished difference Result 429 states and 611 transitions. [2020-10-28 17:11:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:11:53,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-28 17:11:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:53,436 INFO L225 Difference]: With dead ends: 429 [2020-10-28 17:11:53,436 INFO L226 Difference]: Without dead ends: 172 [2020-10-28 17:11:53,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:11:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-28 17:11:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-10-28 17:11:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-28 17:11:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 238 transitions. [2020-10-28 17:11:53,450 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 238 transitions. Word has length 51 [2020-10-28 17:11:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:53,451 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 238 transitions. [2020-10-28 17:11:53,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:11:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 238 transitions. [2020-10-28 17:11:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 17:11:53,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:53,452 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:53,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:11:53,452 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:53,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2069803875, now seen corresponding path program 1 times [2020-10-28 17:11:53,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:53,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96569448] [2020-10-28 17:11:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:54,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 17:11:54,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-28 17:11:54,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:54,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:11:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 17:11:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:11:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:54,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 17:11:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96569448] [2020-10-28 17:11:54,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:54,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:11:54,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148693282] [2020-10-28 17:11:54,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:11:54,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:11:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:11:54,371 INFO L87 Difference]: Start difference. First operand 171 states and 238 transitions. Second operand 6 states. [2020-10-28 17:11:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:55,135 INFO L93 Difference]: Finished difference Result 241 states and 332 transitions. [2020-10-28 17:11:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:11:55,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 17:11:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:55,137 INFO L225 Difference]: With dead ends: 241 [2020-10-28 17:11:55,137 INFO L226 Difference]: Without dead ends: 236 [2020-10-28 17:11:55,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:11:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-28 17:11:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-10-28 17:11:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-28 17:11:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 297 transitions. [2020-10-28 17:11:55,159 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 297 transitions. Word has length 52 [2020-10-28 17:11:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:55,159 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 297 transitions. [2020-10-28 17:11:55,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:11:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 297 transitions. [2020-10-28 17:11:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 17:11:55,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:55,160 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:55,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:11:55,161 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2041577791, now seen corresponding path program 1 times [2020-10-28 17:11:55,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:55,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726361549] [2020-10-28 17:11:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:56,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:56,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:11:56,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:56,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-28 17:11:56,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:56,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:11:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:11:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:11:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:56,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726361549] [2020-10-28 17:11:56,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:56,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:11:56,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721916352] [2020-10-28 17:11:56,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:11:56,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:56,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:11:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:11:56,449 INFO L87 Difference]: Start difference. First operand 212 states and 297 transitions. Second operand 7 states. [2020-10-28 17:11:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:11:57,486 INFO L93 Difference]: Finished difference Result 237 states and 325 transitions. [2020-10-28 17:11:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:11:57,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 17:11:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:11:57,489 INFO L225 Difference]: With dead ends: 237 [2020-10-28 17:11:57,489 INFO L226 Difference]: Without dead ends: 234 [2020-10-28 17:11:57,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:11:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-28 17:11:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 212. [2020-10-28 17:11:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-28 17:11:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2020-10-28 17:11:57,508 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 56 [2020-10-28 17:11:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:11:57,508 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2020-10-28 17:11:57,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:11:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2020-10-28 17:11:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:11:57,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:11:57,510 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:11:57,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:11:57,510 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:11:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:11:57,511 INFO L82 PathProgramCache]: Analyzing trace with hash 675359358, now seen corresponding path program 1 times [2020-10-28 17:11:57,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:11:57,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307479646] [2020-10-28 17:11:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:11:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:58,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:58,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:11:58,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:11:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-28 17:11:58,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:58,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:11:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:11:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 17:11:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:11:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:11:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:11:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:11:58,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:11:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:11:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:11:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:11:58,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:11:58,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:11:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:11:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:11:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:11:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:11:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:11:58,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307479646] [2020-10-28 17:11:58,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:11:58,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:11:58,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848009420] [2020-10-28 17:11:58,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:11:58,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:11:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:11:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:11:58,991 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 8 states. [2020-10-28 17:12:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:00,321 INFO L93 Difference]: Finished difference Result 238 states and 326 transitions. [2020-10-28 17:12:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:12:00,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-10-28 17:12:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:00,324 INFO L225 Difference]: With dead ends: 238 [2020-10-28 17:12:00,324 INFO L226 Difference]: Without dead ends: 235 [2020-10-28 17:12:00,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:12:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-28 17:12:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 213. [2020-10-28 17:12:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-28 17:12:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 297 transitions. [2020-10-28 17:12:00,344 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 297 transitions. Word has length 62 [2020-10-28 17:12:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:00,344 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 297 transitions. [2020-10-28 17:12:00,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:12:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 297 transitions. [2020-10-28 17:12:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:12:00,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:00,345 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 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] [2020-10-28 17:12:00,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:12:00,346 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:00,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1894498344, now seen corresponding path program 1 times [2020-10-28 17:12:00,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:00,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033741632] [2020-10-28 17:12:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:02,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:02,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:12:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:02,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 17:12:02,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033741632] [2020-10-28 17:12:02,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:02,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 17:12:02,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371931892] [2020-10-28 17:12:02,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:12:02,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:12:02,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:02,567 INFO L87 Difference]: Start difference. First operand 213 states and 297 transitions. Second operand 5 states. [2020-10-28 17:12:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:03,109 INFO L93 Difference]: Finished difference Result 221 states and 304 transitions. [2020-10-28 17:12:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:12:03,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-28 17:12:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:03,111 INFO L225 Difference]: With dead ends: 221 [2020-10-28 17:12:03,111 INFO L226 Difference]: Without dead ends: 217 [2020-10-28 17:12:03,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:12:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-28 17:12:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 212. [2020-10-28 17:12:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-28 17:12:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2020-10-28 17:12:03,134 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 71 [2020-10-28 17:12:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:03,134 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2020-10-28 17:12:03,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:12:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2020-10-28 17:12:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:12:03,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:03,143 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:03,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:12:03,143 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash -734915941, now seen corresponding path program 1 times [2020-10-28 17:12:03,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:03,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642464210] [2020-10-28 17:12:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:04,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:04,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:12:04,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1703 [2020-10-28 17:12:04,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:04,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 17:12:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:12:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:05,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:05,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-28 17:12:05,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642464210] [2020-10-28 17:12:05,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:05,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 17:12:05,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468617597] [2020-10-28 17:12:05,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:12:05,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:05,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:12:05,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:05,083 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand 5 states. [2020-10-28 17:12:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:05,623 INFO L93 Difference]: Finished difference Result 222 states and 303 transitions. [2020-10-28 17:12:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:12:05,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-28 17:12:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:05,625 INFO L225 Difference]: With dead ends: 222 [2020-10-28 17:12:05,625 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 17:12:05,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:12:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 17:12:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 211. [2020-10-28 17:12:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-28 17:12:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 292 transitions. [2020-10-28 17:12:05,650 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 292 transitions. Word has length 80 [2020-10-28 17:12:05,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:05,650 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 292 transitions. [2020-10-28 17:12:05,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:12:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 292 transitions. [2020-10-28 17:12:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 17:12:05,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:05,652 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:05,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:12:05,652 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2027641094, now seen corresponding path program 1 times [2020-10-28 17:12:05,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:05,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108655833] [2020-10-28 17:12:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2261 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:12:08,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:08,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:08,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 17:12:08,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108655833] [2020-10-28 17:12:08,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:08,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:12:08,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019819118] [2020-10-28 17:12:08,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:12:08,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:08,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:12:08,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:12:08,227 INFO L87 Difference]: Start difference. First operand 211 states and 292 transitions. Second operand 6 states. [2020-10-28 17:12:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:09,031 INFO L93 Difference]: Finished difference Result 220 states and 300 transitions. [2020-10-28 17:12:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:12:09,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-28 17:12:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:09,034 INFO L225 Difference]: With dead ends: 220 [2020-10-28 17:12:09,034 INFO L226 Difference]: Without dead ends: 217 [2020-10-28 17:12:09,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:12:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-28 17:12:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-10-28 17:12:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-28 17:12:09,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 291 transitions. [2020-10-28 17:12:09,051 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 291 transitions. Word has length 83 [2020-10-28 17:12:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:09,051 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 291 transitions. [2020-10-28 17:12:09,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:12:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 291 transitions. [2020-10-28 17:12:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 17:12:09,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:09,053 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:09,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:12:09,053 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:09,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:09,054 INFO L82 PathProgramCache]: Analyzing trace with hash -64435888, now seen corresponding path program 1 times [2020-10-28 17:12:09,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:09,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29343216] [2020-10-28 17:12:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 17:12:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4169 [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:12:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:13,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:13,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:13,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:13,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:12:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:13,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-28 17:12:13,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29343216] [2020-10-28 17:12:13,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:13,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:12:13,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468449364] [2020-10-28 17:12:13,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:12:13,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:13,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:12:13,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:12:13,412 INFO L87 Difference]: Start difference. First operand 211 states and 291 transitions. Second operand 6 states. [2020-10-28 17:12:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:14,031 INFO L93 Difference]: Finished difference Result 219 states and 298 transitions. [2020-10-28 17:12:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:12:14,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-28 17:12:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:14,033 INFO L225 Difference]: With dead ends: 219 [2020-10-28 17:12:14,034 INFO L226 Difference]: Without dead ends: 214 [2020-10-28 17:12:14,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:12:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-28 17:12:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2020-10-28 17:12:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-28 17:12:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 287 transitions. [2020-10-28 17:12:14,053 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 287 transitions. Word has length 94 [2020-10-28 17:12:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:14,053 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 287 transitions. [2020-10-28 17:12:14,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:12:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 287 transitions. [2020-10-28 17:12:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:12:14,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:14,055 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:14,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:12:14,055 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:14,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash -955034066, now seen corresponding path program 1 times [2020-10-28 17:12:14,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:14,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134468024] [2020-10-28 17:12:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:17,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3087 [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 17:12:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:12:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:17,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:17,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:17,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:17,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 93 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 17:12:17,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134468024] [2020-10-28 17:12:17,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:17,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:12:17,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858126631] [2020-10-28 17:12:17,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:12:17,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:17,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:12:17,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:12:17,590 INFO L87 Difference]: Start difference. First operand 209 states and 287 transitions. Second operand 7 states. [2020-10-28 17:12:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:18,669 INFO L93 Difference]: Finished difference Result 227 states and 306 transitions. [2020-10-28 17:12:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:12:18,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-28 17:12:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:18,674 INFO L225 Difference]: With dead ends: 227 [2020-10-28 17:12:18,675 INFO L226 Difference]: Without dead ends: 224 [2020-10-28 17:12:18,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:12:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-28 17:12:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 209. [2020-10-28 17:12:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-28 17:12:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 286 transitions. [2020-10-28 17:12:18,694 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 286 transitions. Word has length 98 [2020-10-28 17:12:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:18,694 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 286 transitions. [2020-10-28 17:12:18,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:12:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 286 transitions. [2020-10-28 17:12:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:12:18,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:18,695 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:18,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:12:18,696 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1324252203, now seen corresponding path program 2 times [2020-10-28 17:12:18,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:18,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315641776] [2020-10-28 17:12:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3360 [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:12:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 17:12:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:12:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 115 proven. 26 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 17:12:22,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315641776] [2020-10-28 17:12:22,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:12:22,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:12:22,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451837695] [2020-10-28 17:12:22,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:12:22,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:22,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:12:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:12:22,462 INFO L87 Difference]: Start difference. First operand 209 states and 286 transitions. Second operand 8 states. [2020-10-28 17:12:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:23,695 INFO L93 Difference]: Finished difference Result 224 states and 303 transitions. [2020-10-28 17:12:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:12:23,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 17:12:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:23,696 INFO L225 Difference]: With dead ends: 224 [2020-10-28 17:12:23,696 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:12:23,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:12:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:12:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:12:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:12:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:12:23,699 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2020-10-28 17:12:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:23,700 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:12:23,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:12:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:12:23,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:12:23,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:12:23,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:12:24,337 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 188 [2020-10-28 17:12:24,875 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 201 [2020-10-28 17:12:25,604 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 51 [2020-10-28 17:12:26,336 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 51 [2020-10-28 17:12:26,342 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 17:12:26,342 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 17:12:26,342 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 17:12:26,342 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 17:12:26,342 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:12:26,343 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_recv_ack_2~0 |old(~m_recv_ack_2~0)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_msg_1_2~0 |old(~m_msg_1_2~0)|) (= ~m_Protocol~0 |old(~m_Protocol~0)|) (= ~m_recv_ack_1_2~0 |old(~m_recv_ack_1_2~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~m_recv_ack_1_1~0 |old(~m_recv_ack_1_1~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~m_msg_2~0 |old(~m_msg_2~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~m_msg_1_1~0 |old(~m_msg_1_1~0)|)) [2020-10-28 17:12:26,343 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:12:26,343 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:12:26,343 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:12:26,343 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:12:26,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:12:26,344 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 568) no Hoare annotation was computed. [2020-10-28 17:12:26,344 INFO L274 CegarLoopResult]: For program point L432(lines 432 434) no Hoare annotation was computed. [2020-10-28 17:12:26,344 INFO L274 CegarLoopResult]: For program point L300(lines 300 302) no Hoare annotation was computed. [2020-10-28 17:12:26,344 INFO L274 CegarLoopResult]: For program point L168(lines 168 170) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point L532(lines 532 534) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point L400(lines 400 402) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point L268(lines 268 270) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point L500(lines 500 502) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point L368(lines 368 370) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 568) no Hoare annotation was computed. [2020-10-28 17:12:26,346 INFO L274 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L468(lines 468 470) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L41(lines 41 60) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L42(lines 42 57) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L142(lines 142 157) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L242(lines 242 257) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L110(lines 110 125) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L44(lines 44 55) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L342(lines 342 357) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L210(lines 210 225) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L144(lines 144 155) no Hoare annotation was computed. [2020-10-28 17:12:26,347 INFO L274 CegarLoopResult]: For program point L78(lines 78 93) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L442(lines 442 457) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L310(lines 310 325) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L244(lines 244 255) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L178(lines 178 193) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L112(lines 112 123) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L542(lines 542 557) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L410(lines 410 425) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L344(lines 344 355) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L278(lines 278 293) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L212(lines 212 223) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L80(lines 80 91) no Hoare annotation was computed. [2020-10-28 17:12:26,348 INFO L274 CegarLoopResult]: For program point L510(lines 510 525) no Hoare annotation was computed. [2020-10-28 17:12:26,349 INFO L274 CegarLoopResult]: For program point L444(lines 444 455) no Hoare annotation was computed. [2020-10-28 17:12:26,349 INFO L274 CegarLoopResult]: For program point L378(lines 378 393) no Hoare annotation was computed. [2020-10-28 17:12:26,349 INFO L274 CegarLoopResult]: For program point L312(lines 312 323) no Hoare annotation was computed. [2020-10-28 17:12:26,349 INFO L274 CegarLoopResult]: For program point L180(lines 180 191) no Hoare annotation was computed. [2020-10-28 17:12:26,351 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L544(lines 544 555) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L478(lines 478 493) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L280(lines 280 291) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L148(lines 148 150) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L512(lines 512 523) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L380(lines 380 391) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L248(lines 248 250) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L116(lines 116 118) no Hoare annotation was computed. [2020-10-28 17:12:26,352 INFO L274 CegarLoopResult]: For program point L480(lines 480 491) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L348(lines 348 350) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L216(lines 216 218) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L84(lines 84 86) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L448(lines 448 450) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L316(lines 316 318) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L184(lines 184 186) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L548(lines 548 550) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L416(lines 416 418) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L284(lines 284 286) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L270 CegarLoopResult]: At program point L549(lines 16 568) the Hoare annotation is: false [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L516(lines 516 518) no Hoare annotation was computed. [2020-10-28 17:12:26,353 INFO L274 CegarLoopResult]: For program point L384(lines 384 386) no Hoare annotation was computed. [2020-10-28 17:12:26,354 INFO L274 CegarLoopResult]: For program point L484(lines 484 486) no Hoare annotation was computed. [2020-10-28 17:12:26,354 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse1 (<= 1 (+ main_~this_expect~0 (* 2 (div (+ (* main_~this_expect~0 (- 1)) 1) 2))))) (.cse7 (<= main_~this_buffer_empty~0 1)) (.cse8 (<= 1 main_~this_buffer_empty~0)) (.cse0 (<= 0 (+ main_~P8~0 2147483648))) (.cse5 (<= main_~this_expect~0 (+ (* 2 (div (+ main_~this_expect~0 (- 2)) 2)) 2))) (.cse2 (<= (div main_~P8~0 4294967296) 0)) (.cse3 (< 0 (+ (div main_~this_buffer_empty~0 4294967296) 1))) (.cse4 (<= main_~this_buffer_empty~0 0))) (or (and .cse0 (<= 3 main_~q~0) .cse1 .cse2 .cse3 (<= main_~q~0 3) .cse4) (and .cse5 (let ((.cse6 (<= main_~q~0 0))) (or (and .cse6 .cse7 .cse8) (and .cse6 .cse3 .cse4)))) (and (<= main_~q~0 4) .cse0 .cse7 .cse8 (<= 4 main_~q~0) .cse1 .cse2) (and .cse0 .cse7 .cse5 .cse8 .cse2 (<= main_~q~0 1)) (and .cse0 .cse5 .cse2 (<= 5 main_~q~0) .cse3 .cse4))) [2020-10-28 17:12:26,354 INFO L274 CegarLoopResult]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L126(lines 126 141) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L226(lines 226 241) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L94(lines 94 109) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L61(lines 61 160) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L326(lines 326 341) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L194(lines 194 209) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L161(lines 161 260) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L128(lines 128 139) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L62(lines 62 77) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L426(lines 426 441) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L294(lines 294 309) no Hoare annotation was computed. [2020-10-28 17:12:26,355 INFO L274 CegarLoopResult]: For program point L261(lines 261 360) no Hoare annotation was computed. [2020-10-28 17:12:26,356 INFO L274 CegarLoopResult]: For program point L228(lines 228 239) no Hoare annotation was computed. [2020-10-28 17:12:26,356 INFO L274 CegarLoopResult]: For program point L162(lines 162 177) no Hoare annotation was computed. [2020-10-28 17:12:26,356 INFO L274 CegarLoopResult]: For program point L96(lines 96 107) no Hoare annotation was computed. [2020-10-28 17:12:26,356 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 16 568) the Hoare annotation is: true [2020-10-28 17:12:26,356 INFO L270 CegarLoopResult]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse1 (<= 1 (+ main_~this_expect~0 (* 2 (div (+ (* main_~this_expect~0 (- 1)) 1) 2))))) (.cse7 (<= main_~this_buffer_empty~0 1)) (.cse8 (<= 1 main_~this_buffer_empty~0)) (.cse0 (<= 0 (+ main_~P8~0 2147483648))) (.cse5 (<= main_~this_expect~0 (+ (* 2 (div (+ main_~this_expect~0 (- 2)) 2)) 2))) (.cse2 (<= (div main_~P8~0 4294967296) 0)) (.cse3 (< 0 (+ (div main_~this_buffer_empty~0 4294967296) 1))) (.cse4 (<= main_~this_buffer_empty~0 0))) (or (and .cse0 (<= 3 main_~q~0) .cse1 .cse2 .cse3 (<= main_~q~0 3) .cse4) (and .cse5 (let ((.cse6 (<= main_~q~0 0))) (or (and .cse6 .cse7 .cse8) (and .cse6 .cse3 .cse4)))) (and (<= main_~q~0 4) .cse0 .cse7 .cse8 (<= 4 main_~q~0) .cse1 .cse2) (and .cse0 .cse7 .cse5 .cse8 .cse2 (<= main_~q~0 1)) (and .cse0 .cse5 .cse2 (<= 5 main_~q~0) .cse3 .cse4))) [2020-10-28 17:12:26,356 INFO L274 CegarLoopResult]: For program point L526(lines 526 541) no Hoare annotation was computed. [2020-10-28 17:12:26,357 INFO L274 CegarLoopResult]: For program point L394(lines 394 409) no Hoare annotation was computed. [2020-10-28 17:12:26,357 INFO L274 CegarLoopResult]: For program point L361(lines 361 460) no Hoare annotation was computed. [2020-10-28 17:12:26,357 INFO L274 CegarLoopResult]: For program point L328(lines 328 339) no Hoare annotation was computed. [2020-10-28 17:12:26,357 INFO L274 CegarLoopResult]: For program point L262(lines 262 277) no Hoare annotation was computed. [2020-10-28 17:12:26,357 INFO L274 CegarLoopResult]: For program point L196(lines 196 207) no Hoare annotation was computed. [2020-10-28 17:12:26,358 INFO L274 CegarLoopResult]: For program point L64(lines 64 75) no Hoare annotation was computed. [2020-10-28 17:12:26,359 INFO L274 CegarLoopResult]: For program point L494(lines 494 509) no Hoare annotation was computed. [2020-10-28 17:12:26,359 INFO L274 CegarLoopResult]: For program point L461(lines 461 560) no Hoare annotation was computed. [2020-10-28 17:12:26,359 INFO L274 CegarLoopResult]: For program point L428(lines 428 439) no Hoare annotation was computed. [2020-10-28 17:12:26,359 INFO L274 CegarLoopResult]: For program point L362(lines 362 377) no Hoare annotation was computed. [2020-10-28 17:12:26,359 INFO L274 CegarLoopResult]: For program point L296(lines 296 307) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L164(lines 164 175) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L528(lines 528 539) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L462(lines 462 477) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L396(lines 396 407) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L264(lines 264 275) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L132(lines 132 134) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L496(lines 496 507) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L364(lines 364 375) no Hoare annotation was computed. [2020-10-28 17:12:26,360 INFO L274 CegarLoopResult]: For program point L232(lines 232 234) no Hoare annotation was computed. [2020-10-28 17:12:26,361 INFO L274 CegarLoopResult]: For program point L100(lines 100 102) no Hoare annotation was computed. [2020-10-28 17:12:26,361 INFO L274 CegarLoopResult]: For program point L464(lines 464 475) no Hoare annotation was computed. [2020-10-28 17:12:26,361 INFO L274 CegarLoopResult]: For program point L332(lines 332 334) no Hoare annotation was computed. [2020-10-28 17:12:26,361 INFO L274 CegarLoopResult]: For program point L200(lines 200 202) no Hoare annotation was computed. [2020-10-28 17:12:26,361 INFO L274 CegarLoopResult]: For program point L68(lines 68 70) no Hoare annotation was computed. [2020-10-28 17:12:26,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:12:26 BoogieIcfgContainer [2020-10-28 17:12:26,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:12:26,404 INFO L168 Benchmark]: Toolchain (without parser) took 49564.92 ms. Allocated memory was 161.5 MB in the beginning and 868.2 MB in the end (delta: 706.7 MB). Free memory was 142.1 MB in the beginning and 434.1 MB in the end (delta: -292.0 MB). Peak memory consumption was 521.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:26,405 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 161.5 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:12:26,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.76 ms. Allocated memory is still 161.5 MB. Free memory was 141.4 MB in the beginning and 138.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:26,406 INFO L168 Benchmark]: Boogie Preprocessor took 143.68 ms. Allocated memory is still 161.5 MB. Free memory was 138.5 MB in the beginning and 135.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:26,407 INFO L168 Benchmark]: RCFGBuilder took 1308.36 ms. Allocated memory was 161.5 MB in the beginning and 200.3 MB in the end (delta: 38.8 MB). Free memory was 134.8 MB in the beginning and 164.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:26,411 INFO L168 Benchmark]: TraceAbstraction took 47486.98 ms. Allocated memory was 200.3 MB in the beginning and 868.2 MB in the end (delta: 667.9 MB). Free memory was 164.0 MB in the beginning and 434.1 MB in the end (delta: -270.2 MB). Peak memory consumption was 504.7 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:26,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 161.5 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 613.76 ms. Allocated memory is still 161.5 MB. Free memory was 141.4 MB in the beginning and 138.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 143.68 ms. Allocated memory is still 161.5 MB. Free memory was 138.5 MB in the beginning and 135.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1308.36 ms. Allocated memory was 161.5 MB in the beginning and 200.3 MB in the end (delta: 38.8 MB). Free memory was 134.8 MB in the beginning and 164.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 47486.98 ms. Allocated memory was 200.3 MB in the beginning and 868.2 MB in the end (delta: 667.9 MB). Free memory was 164.0 MB in the beginning and 434.1 MB in the end (delta: -270.2 MB). Peak memory consumption was 504.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((((0 <= P8 + 2147483648 && 3 <= q) && 1 <= this_expect + 2 * ((this_expect * -1 + 1) / 2)) && P8 / 4294967296 <= 0) && 0 < this_buffer_empty / 4294967296 + 1) && q <= 3) && this_buffer_empty <= 0) || (this_expect <= 2 * ((this_expect + -2) / 2) + 2 && (((q <= 0 && this_buffer_empty <= 1) && 1 <= this_buffer_empty) || ((q <= 0 && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)))) || ((((((q <= 4 && 0 <= P8 + 2147483648) && this_buffer_empty <= 1) && 1 <= this_buffer_empty) && 4 <= q) && 1 <= this_expect + 2 * ((this_expect * -1 + 1) / 2)) && P8 / 4294967296 <= 0)) || (((((0 <= P8 + 2147483648 && this_buffer_empty <= 1) && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && 1 <= this_buffer_empty) && P8 / 4294967296 <= 0) && q <= 1)) || (((((0 <= P8 + 2147483648 && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && P8 / 4294967296 <= 0) && 5 <= q) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((((0 <= P8 + 2147483648 && 3 <= q) && 1 <= this_expect + 2 * ((this_expect * -1 + 1) / 2)) && P8 / 4294967296 <= 0) && 0 < this_buffer_empty / 4294967296 + 1) && q <= 3) && this_buffer_empty <= 0) || (this_expect <= 2 * ((this_expect + -2) / 2) + 2 && (((q <= 0 && this_buffer_empty <= 1) && 1 <= this_buffer_empty) || ((q <= 0 && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)))) || ((((((q <= 4 && 0 <= P8 + 2147483648) && this_buffer_empty <= 1) && 1 <= this_buffer_empty) && 4 <= q) && 1 <= this_expect + 2 * ((this_expect * -1 + 1) / 2)) && P8 / 4294967296 <= 0)) || (((((0 <= P8 + 2147483648 && this_buffer_empty <= 1) && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && 1 <= this_buffer_empty) && P8 / 4294967296 <= 0) && q <= 1)) || (((((0 <= P8 + 2147483648 && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && P8 / 4294967296 <= 0) && 5 <= q) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.7s, OverallIterations: 23, TraceHistogramMax: 10, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3316 SDtfs, 5699 SDslu, 297 SDs, 0 SdLazy, 5689 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 204 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 30 PreInvPairs, 56 NumberOfFragments, 417 HoareAnnotationTreeSize, 30 FomulaSimplifications, 2602605 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 116325 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1101 ConstructedInterpolants, 0 QuantifiedInterpolants, 578820 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 894/1060 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...