/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/systemc/toy1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:42:28,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:42:28,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:42:28,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:42:28,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:42:28,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:42:28,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:42:28,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:42:28,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:42:28,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:42:28,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:42:28,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:42:28,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:42:28,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:42:28,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:42:28,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:42:28,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:42:28,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:42:28,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:42:28,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:42:28,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:42:28,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:42:28,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:42:28,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:42:28,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:42:28,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:42:28,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:42:28,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:42:28,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:42:28,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:42:28,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:42:28,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:42:28,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:42:28,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:42:28,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:42:28,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:42:28,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:42:28,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:42:28,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:42:28,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:42:28,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:42:28,380 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 [2020-10-29 14:42:28,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:42:28,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:42:28,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:42:28,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:42:28,409 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:42:28,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:42:28,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:42:28,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:42:28,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:42:28,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:42:28,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:42:28,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:42:28,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:42:28,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:42:28,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:42:28,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:42:28,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:42:28,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:42:28,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:42:28,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:42:28,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:42:28,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:42:28,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:42:28,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:42:28,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:42:28,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:42:28,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:42:28,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:42:28,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:42:28,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:42:28,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:42:28,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:42:28,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:42:28,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:42:28,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:42:28,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-29 14:42:28,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d8a23f34/34390d6b8a22471eaf1b4e2788b11396/FLAG1cdb751af [2020-10-29 14:42:29,465 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:42:29,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-29 14:42:29,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d8a23f34/34390d6b8a22471eaf1b4e2788b11396/FLAG1cdb751af [2020-10-29 14:42:29,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d8a23f34/34390d6b8a22471eaf1b4e2788b11396 [2020-10-29 14:42:29,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:42:29,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:42:29,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:42:29,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:42:29,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:42:29,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:42:29" (1/1) ... [2020-10-29 14:42:29,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fca449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:29, skipping insertion in model container [2020-10-29 14:42:29,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:42:29" (1/1) ... [2020-10-29 14:42:29,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:42:29,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:42:30,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:42:30,170 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:42:30,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:42:30,297 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:42:30,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30 WrapperNode [2020-10-29 14:42:30,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:42:30,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:42:30,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:42:30,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:42:30,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (1/1) ... [2020-10-29 14:42:30,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:42:30,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:42:30,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:42:30,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:42:30,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (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 [2020-10-29 14:42:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:42:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:42:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:42:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:42:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:42:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:42:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:42:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:42:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:42:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:42:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:42:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:42:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:42:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:42:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:42:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:42:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:42:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:42:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:42:31,323 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:42:31,323 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 14:42:31,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:42:31 BoogieIcfgContainer [2020-10-29 14:42:31,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:42:31,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:42:31,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:42:31,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:42:31,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:42:29" (1/3) ... [2020-10-29 14:42:31,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f2e0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:42:31, skipping insertion in model container [2020-10-29 14:42:31,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:30" (2/3) ... [2020-10-29 14:42:31,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f2e0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:42:31, skipping insertion in model container [2020-10-29 14:42:31,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:42:31" (3/3) ... [2020-10-29 14:42:31,337 INFO L111 eAbstractionObserver]: Analyzing ICFG toy1.cil.c [2020-10-29 14:42:31,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:42:31,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:42:31,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:42:31,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:42:31,416 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:42:31,416 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:42:31,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:42:31,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:42:31,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:42:31,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:42:31,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:42:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-10-29 14:42:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 14:42:31,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:31,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:31,505 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1781835089, now seen corresponding path program 1 times [2020-10-29 14:42:31,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:31,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845399665] [2020-10-29 14:42:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:32,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:36,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 14:42:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:42:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:42:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:36,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:42:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:42:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:42:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:42:37,230 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:42:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:42:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:37,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:37,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:42:37,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:37,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:42:37,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:37,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:42:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:42:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:42:37,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845399665] [2020-10-29 14:42:37,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:42:37,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:42:37,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307282288] [2020-10-29 14:42:37,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:42:37,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:42:37,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:42:37,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:42:37,330 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-10-29 14:42:37,661 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:42:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:42:39,046 INFO L93 Difference]: Finished difference Result 452 states and 784 transitions. [2020-10-29 14:42:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:42:39,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-29 14:42:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:42:39,065 INFO L225 Difference]: With dead ends: 452 [2020-10-29 14:42:39,066 INFO L226 Difference]: Without dead ends: 295 [2020-10-29 14:42:39,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:42:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-29 14:42:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 262. [2020-10-29 14:42:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-29 14:42:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 421 transitions. [2020-10-29 14:42:39,172 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 421 transitions. Word has length 48 [2020-10-29 14:42:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:42:39,173 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 421 transitions. [2020-10-29 14:42:39,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:42:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 421 transitions. [2020-10-29 14:42:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:42:39,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:39,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:39,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:42:39,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1671895830, now seen corresponding path program 1 times [2020-10-29 14:42:39,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:39,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567175248] [2020-10-29 14:42:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:39,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:41,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:44,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:42:44,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:42:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 14:42:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:44,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:42:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:42:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:42:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:44,499 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:42:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:42:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:44,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:42:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:42:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:44,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:42:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:42:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:42:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:44,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:44,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:42:44,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:42:44,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:44,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:42:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:42:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:42:44,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567175248] [2020-10-29 14:42:44,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:42:44,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:42:44,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809256747] [2020-10-29 14:42:44,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:42:44,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:42:44,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:42:44,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:42:44,611 INFO L87 Difference]: Start difference. First operand 262 states and 421 transitions. Second operand 5 states. [2020-10-29 14:42:44,790 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:42:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:42:46,286 INFO L93 Difference]: Finished difference Result 802 states and 1320 transitions. [2020-10-29 14:42:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:42:46,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:42:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:42:46,294 INFO L225 Difference]: With dead ends: 802 [2020-10-29 14:42:46,294 INFO L226 Difference]: Without dead ends: 575 [2020-10-29 14:42:46,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:42:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-29 14:42:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 483. [2020-10-29 14:42:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-10-29 14:42:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 789 transitions. [2020-10-29 14:42:46,401 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 789 transitions. Word has length 62 [2020-10-29 14:42:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:42:46,401 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 789 transitions. [2020-10-29 14:42:46,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:42:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 789 transitions. [2020-10-29 14:42:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:42:46,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:46,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:46,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:42:46,415 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2141991208, now seen corresponding path program 1 times [2020-10-29 14:42:46,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:46,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442783773] [2020-10-29 14:42:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:51,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:51,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:42:51,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:42:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:42:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:51,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:42:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:42:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:42:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:42:51,689 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:42:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:42:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:42:51,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:42:51,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:51,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:42:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:42:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:42:51,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:42:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:51,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:51,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:42:51,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:42:51,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:51,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:42:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:42:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:42:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:42:51,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442783773] [2020-10-29 14:42:51,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:42:51,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:42:51,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540153776] [2020-10-29 14:42:51,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:42:51,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:42:51,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:42:51,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:42:51,779 INFO L87 Difference]: Start difference. First operand 483 states and 789 transitions. Second operand 5 states. [2020-10-29 14:42:51,946 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:42:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:42:53,297 INFO L93 Difference]: Finished difference Result 1441 states and 2384 transitions. [2020-10-29 14:42:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:42:53,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:42:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:42:53,312 INFO L225 Difference]: With dead ends: 1441 [2020-10-29 14:42:53,313 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 14:42:53,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:42:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 14:42:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 812. [2020-10-29 14:42:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-29 14:42:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1329 transitions. [2020-10-29 14:42:53,454 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1329 transitions. Word has length 62 [2020-10-29 14:42:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:42:53,457 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1329 transitions. [2020-10-29 14:42:53,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:42:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1329 transitions. [2020-10-29 14:42:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:42:53,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:53,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:53,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:42:53,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:53,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:53,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1097113192, now seen corresponding path program 1 times [2020-10-29 14:42:53,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:53,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749113851] [2020-10-29 14:42:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:53,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:53,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:58,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:58,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:42:58,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:42:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:42:58,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:58,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:42:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 14:42:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:42:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:58,670 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:42:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:42:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:58,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:42:58,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:42:58,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:58,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:42:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:42:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:42:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:42:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:58,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:58,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:42:58,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:42:58,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:58,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:42:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:42:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:42:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 14:42:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:42:58,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749113851] [2020-10-29 14:42:58,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:42:58,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:42:58,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170857467] [2020-10-29 14:42:58,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:42:58,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:42:58,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:42:58,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:42:58,759 INFO L87 Difference]: Start difference. First operand 812 states and 1329 transitions. Second operand 6 states. [2020-10-29 14:42:58,935 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:00,722 INFO L93 Difference]: Finished difference Result 2796 states and 4717 transitions. [2020-10-29 14:43:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:43:00,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-29 14:43:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:00,740 INFO L225 Difference]: With dead ends: 2796 [2020-10-29 14:43:00,740 INFO L226 Difference]: Without dead ends: 2077 [2020-10-29 14:43:00,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:43:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-29 14:43:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 1478. [2020-10-29 14:43:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-29 14:43:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2437 transitions. [2020-10-29 14:43:00,911 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2437 transitions. Word has length 62 [2020-10-29 14:43:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:00,912 INFO L481 AbstractCegarLoop]: Abstraction has 1478 states and 2437 transitions. [2020-10-29 14:43:00,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:43:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2437 transitions. [2020-10-29 14:43:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:00,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:00,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:00,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:43:00,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:00,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1659514074, now seen corresponding path program 1 times [2020-10-29 14:43:00,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:00,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244229776] [2020-10-29 14:43:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:05,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:43:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:06,213 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:06,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:06,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:06,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 14:43:06,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:06,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:43:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:43:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:06,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:43:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:06,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244229776] [2020-10-29 14:43:06,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:43:06,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 14:43:06,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048470504] [2020-10-29 14:43:06,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:43:06,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:06,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:43:06,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:43:06,383 INFO L87 Difference]: Start difference. First operand 1478 states and 2437 transitions. Second operand 8 states. [2020-10-29 14:43:06,617 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:07,814 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:08,131 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 14:43:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:09,393 INFO L93 Difference]: Finished difference Result 5461 states and 9149 transitions. [2020-10-29 14:43:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 14:43:09,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-10-29 14:43:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:09,430 INFO L225 Difference]: With dead ends: 5461 [2020-10-29 14:43:09,430 INFO L226 Difference]: Without dead ends: 4698 [2020-10-29 14:43:09,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:43:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2020-10-29 14:43:09,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 3389. [2020-10-29 14:43:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-29 14:43:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5725 transitions. [2020-10-29 14:43:09,867 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5725 transitions. Word has length 62 [2020-10-29 14:43:09,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:09,868 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 5725 transitions. [2020-10-29 14:43:09,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:43:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5725 transitions. [2020-10-29 14:43:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:09,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:09,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:09,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:43:09,880 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1657877491, now seen corresponding path program 1 times [2020-10-29 14:43:09,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:09,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062008135] [2020-10-29 14:43:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:14,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:14,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:14,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:43:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:43:14,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:14,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:43:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:43:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:43:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:15,101 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:15,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:15,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:43:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:15,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:15,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:15,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:43:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:15,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:43:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:15,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062008135] [2020-10-29 14:43:15,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:15,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:43:15,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515819276] [2020-10-29 14:43:15,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:43:15,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:43:15,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:43:15,183 INFO L87 Difference]: Start difference. First operand 3389 states and 5725 transitions. Second operand 6 states. [2020-10-29 14:43:15,347 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:17,728 INFO L93 Difference]: Finished difference Result 13330 states and 23696 transitions. [2020-10-29 14:43:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:43:17,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-29 14:43:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:17,806 INFO L225 Difference]: With dead ends: 13330 [2020-10-29 14:43:17,806 INFO L226 Difference]: Without dead ends: 10114 [2020-10-29 14:43:17,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:43:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10114 states. [2020-10-29 14:43:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10114 to 6846. [2020-10-29 14:43:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6846 states. [2020-10-29 14:43:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 11931 transitions. [2020-10-29 14:43:18,790 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 11931 transitions. Word has length 62 [2020-10-29 14:43:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:18,790 INFO L481 AbstractCegarLoop]: Abstraction has 6846 states and 11931 transitions. [2020-10-29 14:43:18,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:43:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 11931 transitions. [2020-10-29 14:43:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:18,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:18,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:18,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:43:18,821 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:18,822 INFO L82 PathProgramCache]: Analyzing trace with hash 608503695, now seen corresponding path program 1 times [2020-10-29 14:43:18,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:18,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583376600] [2020-10-29 14:43:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:43:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4439 [2020-10-29 14:43:23,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:23,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:43:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:23,507 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:43:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:23,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:23,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:23,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:23,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583376600] [2020-10-29 14:43:23,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:23,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:23,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780484706] [2020-10-29 14:43:23,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:23,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:23,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:23,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:23,585 INFO L87 Difference]: Start difference. First operand 6846 states and 11931 transitions. Second operand 5 states. [2020-10-29 14:43:23,748 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:25,407 INFO L93 Difference]: Finished difference Result 16001 states and 27662 transitions. [2020-10-29 14:43:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:43:25,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:25,471 INFO L225 Difference]: With dead ends: 16001 [2020-10-29 14:43:25,471 INFO L226 Difference]: Without dead ends: 9422 [2020-10-29 14:43:25,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9422 states. [2020-10-29 14:43:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9422 to 7254. [2020-10-29 14:43:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7254 states. [2020-10-29 14:43:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7254 states to 7254 states and 12612 transitions. [2020-10-29 14:43:26,501 INFO L78 Accepts]: Start accepts. Automaton has 7254 states and 12612 transitions. Word has length 62 [2020-10-29 14:43:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:26,502 INFO L481 AbstractCegarLoop]: Abstraction has 7254 states and 12612 transitions. [2020-10-29 14:43:26,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7254 states and 12612 transitions. [2020-10-29 14:43:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:26,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:26,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:26,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:43:26,534 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:26,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:26,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1268035217, now seen corresponding path program 1 times [2020-10-29 14:43:26,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:26,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650775832] [2020-10-29 14:43:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:30,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:30,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3929 [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:43:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:30,631 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:30,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650775832] [2020-10-29 14:43:30,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:30,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:30,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753086347] [2020-10-29 14:43:30,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:30,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:30,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:30,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:30,705 INFO L87 Difference]: Start difference. First operand 7254 states and 12612 transitions. Second operand 5 states. [2020-10-29 14:43:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:32,041 INFO L93 Difference]: Finished difference Result 17094 states and 30107 transitions. [2020-10-29 14:43:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:43:32,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:32,089 INFO L225 Difference]: With dead ends: 17094 [2020-10-29 14:43:32,090 INFO L226 Difference]: Without dead ends: 10235 [2020-10-29 14:43:32,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2020-10-29 14:43:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 8027. [2020-10-29 14:43:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8027 states. [2020-10-29 14:43:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 13835 transitions. [2020-10-29 14:43:33,003 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 13835 transitions. Word has length 62 [2020-10-29 14:43:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 8027 states and 13835 transitions. [2020-10-29 14:43:33,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 13835 transitions. [2020-10-29 14:43:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:33,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:33,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:33,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:43:33,037 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:33,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2112040719, now seen corresponding path program 1 times [2020-10-29 14:43:33,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:33,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743874368] [2020-10-29 14:43:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:35,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:35,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:35,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:43:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2637 [2020-10-29 14:43:35,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:35,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:43:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:35,860 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:43:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:35,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:35,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:35,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:35,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:35,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:35,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743874368] [2020-10-29 14:43:35,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:35,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:35,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740674142] [2020-10-29 14:43:35,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:35,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:35,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:35,924 INFO L87 Difference]: Start difference. First operand 8027 states and 13835 transitions. Second operand 5 states. [2020-10-29 14:43:36,087 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:38,549 INFO L93 Difference]: Finished difference Result 27937 states and 47722 transitions. [2020-10-29 14:43:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:43:38,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:38,641 INFO L225 Difference]: With dead ends: 27937 [2020-10-29 14:43:38,641 INFO L226 Difference]: Without dead ends: 20065 [2020-10-29 14:43:38,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20065 states. [2020-10-29 14:43:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20065 to 15756. [2020-10-29 14:43:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15756 states. [2020-10-29 14:43:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15756 states to 15756 states and 26867 transitions. [2020-10-29 14:43:40,108 INFO L78 Accepts]: Start accepts. Automaton has 15756 states and 26867 transitions. Word has length 62 [2020-10-29 14:43:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:40,108 INFO L481 AbstractCegarLoop]: Abstraction has 15756 states and 26867 transitions. [2020-10-29 14:43:40,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 15756 states and 26867 transitions. [2020-10-29 14:43:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:40,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:40,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:40,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:43:40,150 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 761543759, now seen corresponding path program 1 times [2020-10-29 14:43:40,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:40,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986710159] [2020-10-29 14:43:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:41,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:41,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:43:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-10-29 14:43:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:41,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:43:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:41,731 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:41,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:41,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:41,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986710159] [2020-10-29 14:43:41,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:41,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051461232] [2020-10-29 14:43:41,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:41,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:41,795 INFO L87 Difference]: Start difference. First operand 15756 states and 26867 transitions. Second operand 5 states. [2020-10-29 14:43:41,955 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:44,342 INFO L93 Difference]: Finished difference Result 33391 states and 56626 transitions. [2020-10-29 14:43:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:43:44,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:44,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:44,429 INFO L225 Difference]: With dead ends: 33391 [2020-10-29 14:43:44,429 INFO L226 Difference]: Without dead ends: 18607 [2020-10-29 14:43:44,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18607 states. [2020-10-29 14:43:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18607 to 14306. [2020-10-29 14:43:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14306 states. [2020-10-29 14:43:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14306 states to 14306 states and 24437 transitions. [2020-10-29 14:43:45,971 INFO L78 Accepts]: Start accepts. Automaton has 14306 states and 24437 transitions. Word has length 62 [2020-10-29 14:43:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:45,972 INFO L481 AbstractCegarLoop]: Abstraction has 14306 states and 24437 transitions. [2020-10-29 14:43:45,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14306 states and 24437 transitions. [2020-10-29 14:43:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:45,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:45,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:45,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:43:45,994 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -435550125, now seen corresponding path program 1 times [2020-10-29 14:43:45,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:45,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130133446] [2020-10-29 14:43:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:47,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:43:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-29 14:43:47,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:47,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 14:43:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:47,270 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:47,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:47,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:47,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:47,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:47,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:43:47,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:47,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:47,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:47,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130133446] [2020-10-29 14:43:47,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:47,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:47,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134082606] [2020-10-29 14:43:47,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:47,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:47,323 INFO L87 Difference]: Start difference. First operand 14306 states and 24437 transitions. Second operand 5 states. [2020-10-29 14:43:47,482 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:49,342 INFO L93 Difference]: Finished difference Result 32837 states and 55722 transitions. [2020-10-29 14:43:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:43:49,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:49,414 INFO L225 Difference]: With dead ends: 32837 [2020-10-29 14:43:49,415 INFO L226 Difference]: Without dead ends: 18607 [2020-10-29 14:43:49,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18607 states. [2020-10-29 14:43:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18607 to 14306. [2020-10-29 14:43:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14306 states. [2020-10-29 14:43:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14306 states to 14306 states and 24395 transitions. [2020-10-29 14:43:51,025 INFO L78 Accepts]: Start accepts. Automaton has 14306 states and 24395 transitions. Word has length 62 [2020-10-29 14:43:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:51,025 INFO L481 AbstractCegarLoop]: Abstraction has 14306 states and 24395 transitions. [2020-10-29 14:43:51,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14306 states and 24395 transitions. [2020-10-29 14:43:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:51,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:51,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:51,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:43:51,050 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:51,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1503611921, now seen corresponding path program 1 times [2020-10-29 14:43:51,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:51,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880131630] [2020-10-29 14:43:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:52,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:52,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:52,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:43:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-29 14:43:52,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:52,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 14:43:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:52,528 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:52,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:52,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:52,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:52,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880131630] [2020-10-29 14:43:52,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:52,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:52,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70425275] [2020-10-29 14:43:52,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:52,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:52,581 INFO L87 Difference]: Start difference. First operand 14306 states and 24395 transitions. Second operand 5 states. [2020-10-29 14:43:52,748 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:54,871 INFO L93 Difference]: Finished difference Result 31087 states and 53231 transitions. [2020-10-29 14:43:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:43:54,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:54,947 INFO L225 Difference]: With dead ends: 31087 [2020-10-29 14:43:54,948 INFO L226 Difference]: Without dead ends: 17461 [2020-10-29 14:43:55,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17461 states. [2020-10-29 14:43:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17461 to 13112. [2020-10-29 14:43:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13112 states. [2020-10-29 14:43:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 22126 transitions. [2020-10-29 14:43:56,694 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 22126 transitions. Word has length 62 [2020-10-29 14:43:56,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:56,695 INFO L481 AbstractCegarLoop]: Abstraction has 13112 states and 22126 transitions. [2020-10-29 14:43:56,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 22126 transitions. [2020-10-29 14:43:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:56,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:56,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:56,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:43:56,725 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1109245135, now seen corresponding path program 1 times [2020-10-29 14:43:56,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:56,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482170679] [2020-10-29 14:43:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 14:43:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 14:43:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:57,796 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:57,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:57,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:43:57,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:57,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:57,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:57,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:57,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:57,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:57,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:57,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:43:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:57,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482170679] [2020-10-29 14:43:57,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:43:57,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 14:43:57,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174627155] [2020-10-29 14:43:57,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:57,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:57,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:57,864 INFO L87 Difference]: Start difference. First operand 13112 states and 22126 transitions. Second operand 5 states. [2020-10-29 14:43:58,058 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:00,728 INFO L93 Difference]: Finished difference Result 29906 states and 53098 transitions. [2020-10-29 14:44:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:44:00,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:44:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:00,807 INFO L225 Difference]: With dead ends: 29906 [2020-10-29 14:44:00,807 INFO L226 Difference]: Without dead ends: 21770 [2020-10-29 14:44:00,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:44:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21770 states. [2020-10-29 14:44:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21770 to 14227. [2020-10-29 14:44:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14227 states. [2020-10-29 14:44:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14227 states to 14227 states and 24726 transitions. [2020-10-29 14:44:02,341 INFO L78 Accepts]: Start accepts. Automaton has 14227 states and 24726 transitions. Word has length 62 [2020-10-29 14:44:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:02,341 INFO L481 AbstractCegarLoop]: Abstraction has 14227 states and 24726 transitions. [2020-10-29 14:44:02,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:44:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 14227 states and 24726 transitions. [2020-10-29 14:44:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 14:44:02,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:02,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:02,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:44:02,512 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash 524184278, now seen corresponding path program 1 times [2020-10-29 14:44:02,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:02,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620479632] [2020-10-29 14:44:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 14:44:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 14:44:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,484 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:04,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:44:04,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:44:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:04,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:44:04,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:44:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 14:44:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:04,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:04,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 14:44:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:44:04,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620479632] [2020-10-29 14:44:04,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:44:04,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:44:04,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166290704] [2020-10-29 14:44:04,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:44:04,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:04,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:44:04,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:44:04,614 INFO L87 Difference]: Start difference. First operand 14227 states and 24726 transitions. Second operand 6 states. [2020-10-29 14:44:05,083 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:10,980 INFO L93 Difference]: Finished difference Result 59809 states and 107870 transitions. [2020-10-29 14:44:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:44:10,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-29 14:44:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:11,112 INFO L225 Difference]: With dead ends: 59809 [2020-10-29 14:44:11,112 INFO L226 Difference]: Without dead ends: 40337 [2020-10-29 14:44:11,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:44:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40337 states. [2020-10-29 14:44:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40337 to 27563. [2020-10-29 14:44:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27563 states. [2020-10-29 14:44:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27563 states to 27563 states and 49593 transitions. [2020-10-29 14:44:14,956 INFO L78 Accepts]: Start accepts. Automaton has 27563 states and 49593 transitions. Word has length 89 [2020-10-29 14:44:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:14,956 INFO L481 AbstractCegarLoop]: Abstraction has 27563 states and 49593 transitions. [2020-10-29 14:44:14,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:44:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 27563 states and 49593 transitions. [2020-10-29 14:44:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 14:44:15,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:15,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:15,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:44:15,027 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1414775733, now seen corresponding path program 1 times [2020-10-29 14:44:15,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:15,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118167096] [2020-10-29 14:44:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:18,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 14:44:18,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:44:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3945 [2020-10-29 14:44:18,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:18,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:44:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 14:44:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 14:44:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:19,192 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:19,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:19,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:44:19,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:19,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:44:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:19,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:19,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:19,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:44:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:19,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:19,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:19,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:44:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 14:44:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:19,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:19,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:19,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:44:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 14:44:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:44:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:44:19,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118167096] [2020-10-29 14:44:19,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:44:19,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 14:44:19,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651162245] [2020-10-29 14:44:19,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:44:19,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:19,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:44:19,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:44:19,324 INFO L87 Difference]: Start difference. First operand 27563 states and 49593 transitions. Second operand 10 states. [2020-10-29 14:44:19,670 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 120 [2020-10-29 14:44:19,835 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 14:44:24,264 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 122 [2020-10-29 14:44:25,071 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 14:44:26,742 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:44:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:34,991 INFO L93 Difference]: Finished difference Result 130586 states and 238710 transitions. [2020-10-29 14:44:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 14:44:34,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-29 14:44:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:35,807 INFO L225 Difference]: With dead ends: 130586 [2020-10-29 14:44:35,807 INFO L226 Difference]: Without dead ends: 115645 [2020-10-29 14:44:36,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2020-10-29 14:44:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115645 states. [2020-10-29 14:44:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115645 to 77405. [2020-10-29 14:44:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77405 states. [2020-10-29 14:44:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77405 states to 77405 states and 141832 transitions. [2020-10-29 14:44:46,472 INFO L78 Accepts]: Start accepts. Automaton has 77405 states and 141832 transitions. Word has length 99 [2020-10-29 14:44:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:46,473 INFO L481 AbstractCegarLoop]: Abstraction has 77405 states and 141832 transitions. [2020-10-29 14:44:46,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:44:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 77405 states and 141832 transitions. [2020-10-29 14:44:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 14:44:46,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:46,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:46,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:44:46,612 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:46,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1413139150, now seen corresponding path program 1 times [2020-10-29 14:44:46,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:46,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027403058] [2020-10-29 14:44:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:47,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 14:44:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:44:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-29 14:44:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:47,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 14:44:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:44:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:48,175 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:48,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:48,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:44:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:48,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:48,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:48,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:44:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:48,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:48,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:48,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:44:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 14:44:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:48,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:48,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:48,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:48,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:48,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:44:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 14:44:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:44:48,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027403058] [2020-10-29 14:44:48,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:44:48,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:44:48,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439741010] [2020-10-29 14:44:48,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:44:48,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:48,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:44:48,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:44:48,281 INFO L87 Difference]: Start difference. First operand 77405 states and 141832 transitions. Second operand 6 states. [2020-10-29 14:44:48,571 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:00,289 INFO L93 Difference]: Finished difference Result 165521 states and 301980 transitions. [2020-10-29 14:45:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:45:00,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 14:45:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:01,542 INFO L225 Difference]: With dead ends: 165521 [2020-10-29 14:45:01,543 INFO L226 Difference]: Without dead ends: 95589 [2020-10-29 14:45:03,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:45:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95589 states. [2020-10-29 14:45:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95589 to 71684. [2020-10-29 14:45:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71684 states. [2020-10-29 14:45:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71684 states to 71684 states and 120117 transitions. [2020-10-29 14:45:11,546 INFO L78 Accepts]: Start accepts. Automaton has 71684 states and 120117 transitions. Word has length 99 [2020-10-29 14:45:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:11,547 INFO L481 AbstractCegarLoop]: Abstraction has 71684 states and 120117 transitions. [2020-10-29 14:45:11,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:45:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 71684 states and 120117 transitions. [2020-10-29 14:45:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 14:45:12,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:12,124 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:12,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:45:12,124 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:12,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2082608729, now seen corresponding path program 1 times [2020-10-29 14:45:12,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:12,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893883027] [2020-10-29 14:45:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 14:45:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:17,330 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 14:45:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 14:45:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:45:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 14:45:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:17,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 14:45:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:45:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:17,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:17,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:17,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:45:17,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:17,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:17,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:45:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 14:45:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:17,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:45:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:45:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:17,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:45:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:45:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:17,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:17,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:45:17,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:17,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:45:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 14:45:17,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893883027] [2020-10-29 14:45:17,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:45:17,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:45:17,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058505836] [2020-10-29 14:45:17,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:45:17,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:17,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:45:17,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:45:17,643 INFO L87 Difference]: Start difference. First operand 71684 states and 120117 transitions. Second operand 8 states. [2020-10-29 14:45:17,876 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 14:45:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:31,960 INFO L93 Difference]: Finished difference Result 211536 states and 370646 transitions. [2020-10-29 14:45:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 14:45:31,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-29 14:45:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:33,156 INFO L225 Difference]: With dead ends: 211536 [2020-10-29 14:45:33,157 INFO L226 Difference]: Without dead ends: 140824 [2020-10-29 14:45:33,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-10-29 14:45:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140824 states. [2020-10-29 14:45:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140824 to 70071. [2020-10-29 14:45:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70071 states. [2020-10-29 14:45:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70071 states to 70071 states and 116554 transitions. [2020-10-29 14:45:42,740 INFO L78 Accepts]: Start accepts. Automaton has 70071 states and 116554 transitions. Word has length 125 [2020-10-29 14:45:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:42,740 INFO L481 AbstractCegarLoop]: Abstraction has 70071 states and 116554 transitions. [2020-10-29 14:45:42,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:45:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 70071 states and 116554 transitions. [2020-10-29 14:45:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:45:42,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:42,896 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:42,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:45:42,896 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:42,897 INFO L82 PathProgramCache]: Analyzing trace with hash 851743308, now seen corresponding path program 1 times [2020-10-29 14:45:42,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:42,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337396305] [2020-10-29 14:45:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:42,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:42,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:45:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:44,989 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:44,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 14:45:45,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:45:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:45,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:45:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:45,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:45,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:45,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 14:45:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:45,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:45:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:45:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:45:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:45:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:45,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:45,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:45:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:45,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:45:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 14:45:45,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337396305] [2020-10-29 14:45:45,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:45:45,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:45:45,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003126287] [2020-10-29 14:45:45,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:45:45,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:45,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:45:45,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:45:45,227 INFO L87 Difference]: Start difference. First operand 70071 states and 116554 transitions. Second operand 7 states. [2020-10-29 14:45:45,405 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120