/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=DEEPEST --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/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:34:29,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:34:29,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:34:29,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:34:29,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:34:29,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:34:29,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:34:29,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:34:29,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:34:29,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:34:29,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:34:29,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:34:29,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:34:29,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:34:29,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:34:29,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:34:29,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:34:29,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:34:29,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:34:29,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:34:29,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:34:29,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:34:29,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:34:29,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:34:29,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:34:29,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:34:29,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:34:29,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:34:29,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:34:29,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:34:29,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:34:29,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:34:29,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:34:29,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:34:29,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:34:29,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:34:29,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:34:29,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:34:29,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:34:29,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:34:29,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:34:29,468 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 [2020-10-27 23:34:29,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:34:29,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:34:29,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:34:29,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:34:29,496 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:34:29,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:34:29,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:34:29,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:34:29,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:34:29,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:34:29,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:34:29,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:34:29,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:34:29,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:34:29,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:34:29,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:34:29,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:34:29,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:34:29,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:34:29,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:34:29,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:34:29,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:34:29,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:34:29,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:34:29,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:34:29,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:34:29,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:34:29,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:34:29,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:34:29,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:34:29,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:34:29,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:34:29,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:34:29,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:34:29,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:34:29,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:34:30,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac5bdd1f1/bf125dc3551b484b9733944be3c5ee75/FLAGbde85e925 [2020-10-27 23:34:30,855 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:34:30,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:34:30,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac5bdd1f1/bf125dc3551b484b9733944be3c5ee75/FLAGbde85e925 [2020-10-27 23:34:31,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac5bdd1f1/bf125dc3551b484b9733944be3c5ee75 [2020-10-27 23:34:31,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:34:31,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:34:31,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:34:31,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:34:31,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:34:31,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:34:31" (1/1) ... [2020-10-27 23:34:31,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fede82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:31, skipping insertion in model container [2020-10-27 23:34:31,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:34:31" (1/1) ... [2020-10-27 23:34:31,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:34:31,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:34:31,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:34:31,751 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:34:31,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:34:32,016 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:34:32,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32 WrapperNode [2020-10-27 23:34:32,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:34:32,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:34:32,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:34:32,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:34:32,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (1/1) ... [2020-10-27 23:34:32,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:34:32,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:34:32,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:34:32,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:34:32,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (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 [2020-10-27 23:34:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:34:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:34:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:34:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:34:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:34:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:34:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:34:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:34:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:34:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:34:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:34:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:34:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:34:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:34:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:34:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:34:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:34:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:34:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:34:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:34:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:34:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:34:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:34:33,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:34:33,794 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:34:33,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:34:33 BoogieIcfgContainer [2020-10-27 23:34:33,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:34:33,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:34:33,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:34:33,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:34:33,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:34:31" (1/3) ... [2020-10-27 23:34:33,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:34:33, skipping insertion in model container [2020-10-27 23:34:33,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:32" (2/3) ... [2020-10-27 23:34:33,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:34:33, skipping insertion in model container [2020-10-27 23:34:33,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:34:33" (3/3) ... [2020-10-27 23:34:33,806 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 23:34:33,819 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:34:33,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:34:33,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:34:33,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:34:33,869 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:34:33,869 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:34:33,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:34:33,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:34:33,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:34:33,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:34:33,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:34:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 23:34:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 23:34:33,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:33,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:33,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 23:34:33,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:33,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912230947] [2020-10-27 23:34:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 23:34:39,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:34:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 23:34:39,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:34:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:34:40,468 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:40,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:40,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:40,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 23:34:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:40,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912230947] [2020-10-27 23:34:40,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:40,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:34:40,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292953589] [2020-10-27 23:34:40,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:34:40,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:34:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:34:40,646 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 7 states. [2020-10-27 23:34:41,516 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:34:44,743 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:45,339 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:34:45,928 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:34:46,678 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:34:47,273 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:47,860 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:34:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:47,977 INFO L93 Difference]: Finished difference Result 1435 states and 2446 transitions. [2020-10-27 23:34:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:34:47,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-27 23:34:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:48,011 INFO L225 Difference]: With dead ends: 1435 [2020-10-27 23:34:48,011 INFO L226 Difference]: Without dead ends: 1273 [2020-10-27 23:34:48,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:34:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-27 23:34:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 460. [2020-10-27 23:34:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-27 23:34:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 765 transitions. [2020-10-27 23:34:48,162 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 765 transitions. Word has length 115 [2020-10-27 23:34:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:48,163 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 765 transitions. [2020-10-27 23:34:48,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:34:48,164 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 765 transitions. [2020-10-27 23:34:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 23:34:48,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:48,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:48,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:34:48,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:48,180 INFO L82 PathProgramCache]: Analyzing trace with hash -907521539, now seen corresponding path program 1 times [2020-10-27 23:34:48,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:48,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470646474] [2020-10-27 23:34:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:49,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:34:53,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:34:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:34:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:34:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:34:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:34:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:54,004 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:34:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:54,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:54,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:54,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:54,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:34:54,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:54,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:54,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:54,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:54,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470646474] [2020-10-27 23:34:54,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:54,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:34:54,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206736597] [2020-10-27 23:34:54,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:34:54,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:34:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:34:54,100 INFO L87 Difference]: Start difference. First operand 460 states and 765 transitions. Second operand 8 states. [2020-10-27 23:34:54,782 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:34:57,805 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:34:58,456 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:34:59,174 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:34:59,828 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:00,584 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:01,182 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:35:01,844 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:35:02,967 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:35:03,637 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:04,610 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:35:05,226 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:05,250 INFO L93 Difference]: Finished difference Result 3284 states and 5514 transitions. [2020-10-27 23:35:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:35:05,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-27 23:35:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:05,278 INFO L225 Difference]: With dead ends: 3284 [2020-10-27 23:35:05,279 INFO L226 Difference]: Without dead ends: 3017 [2020-10-27 23:35:05,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-27 23:35:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-27 23:35:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1180. [2020-10-27 23:35:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-10-27 23:35:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1980 transitions. [2020-10-27 23:35:05,406 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1980 transitions. Word has length 116 [2020-10-27 23:35:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:05,412 INFO L481 AbstractCegarLoop]: Abstraction has 1180 states and 1980 transitions. [2020-10-27 23:35:05,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:35:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1980 transitions. [2020-10-27 23:35:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 23:35:05,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:05,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:05,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:35:05,424 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash 20745321, now seen corresponding path program 1 times [2020-10-27 23:35:05,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:05,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676693044] [2020-10-27 23:35:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:35:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:35:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 23:35:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:35:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:35:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:11,266 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:11,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:11,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:11,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:11,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:35:11,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:11,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:11,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676693044] [2020-10-27 23:35:11,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:11,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:11,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712752519] [2020-10-27 23:35:11,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:11,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:11,341 INFO L87 Difference]: Start difference. First operand 1180 states and 1980 transitions. Second operand 5 states. [2020-10-27 23:35:12,011 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:14,521 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:35:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:14,683 INFO L93 Difference]: Finished difference Result 3891 states and 6554 transitions. [2020-10-27 23:35:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:35:14,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 23:35:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:14,703 INFO L225 Difference]: With dead ends: 3891 [2020-10-27 23:35:14,706 INFO L226 Difference]: Without dead ends: 3001 [2020-10-27 23:35:14,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:35:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-27 23:35:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2101. [2020-10-27 23:35:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-27 23:35:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3532 transitions. [2020-10-27 23:35:14,905 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3532 transitions. Word has length 117 [2020-10-27 23:35:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:14,906 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 3532 transitions. [2020-10-27 23:35:14,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3532 transitions. [2020-10-27 23:35:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 23:35:14,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:14,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:14,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:35:14,912 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:14,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1126454378, now seen corresponding path program 1 times [2020-10-27 23:35:14,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:14,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019464079] [2020-10-27 23:35:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:20,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:20,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 23:35:20,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:35:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 23:35:20,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 23:35:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:35:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:20,701 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:20,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:20,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:35:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:20,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019464079] [2020-10-27 23:35:20,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:20,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:20,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770099137] [2020-10-27 23:35:20,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:20,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:20,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:20,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:20,779 INFO L87 Difference]: Start difference. First operand 2101 states and 3532 transitions. Second operand 5 states. [2020-10-27 23:35:21,399 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:23,998 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:35:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:24,306 INFO L93 Difference]: Finished difference Result 7435 states and 12522 transitions. [2020-10-27 23:35:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:35:24,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 23:35:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:24,339 INFO L225 Difference]: With dead ends: 7435 [2020-10-27 23:35:24,339 INFO L226 Difference]: Without dead ends: 5665 [2020-10-27 23:35:24,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:35:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2020-10-27 23:35:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 3878. [2020-10-27 23:35:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3878 states. [2020-10-27 23:35:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6520 transitions. [2020-10-27 23:35:24,677 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6520 transitions. Word has length 118 [2020-10-27 23:35:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:24,677 INFO L481 AbstractCegarLoop]: Abstraction has 3878 states and 6520 transitions. [2020-10-27 23:35:24,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6520 transitions. [2020-10-27 23:35:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 23:35:24,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:24,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:24,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:35:24,681 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:24,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:24,682 INFO L82 PathProgramCache]: Analyzing trace with hash 2106359330, now seen corresponding path program 1 times [2020-10-27 23:35:24,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:24,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823206821] [2020-10-27 23:35:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:35:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:30,359 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:30,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:30,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:30,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:30,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823206821] [2020-10-27 23:35:30,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:30,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:30,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015451736] [2020-10-27 23:35:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:30,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:30,428 INFO L87 Difference]: Start difference. First operand 3878 states and 6520 transitions. Second operand 5 states. [2020-10-27 23:35:31,047 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:33,433 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-27 23:35:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:33,887 INFO L93 Difference]: Finished difference Result 14447 states and 24298 transitions. [2020-10-27 23:35:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:35:33,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 23:35:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:33,945 INFO L225 Difference]: With dead ends: 14447 [2020-10-27 23:35:33,946 INFO L226 Difference]: Without dead ends: 10924 [2020-10-27 23:35:33,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:35:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2020-10-27 23:35:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 7370. [2020-10-27 23:35:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7370 states. [2020-10-27 23:35:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 12372 transitions. [2020-10-27 23:35:34,647 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 12372 transitions. Word has length 119 [2020-10-27 23:35:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:34,648 INFO L481 AbstractCegarLoop]: Abstraction has 7370 states and 12372 transitions. [2020-10-27 23:35:34,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 12372 transitions. [2020-10-27 23:35:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:35:34,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:34,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:34,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:35:34,652 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1656484632, now seen corresponding path program 1 times [2020-10-27 23:35:34,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:34,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822483272] [2020-10-27 23:35:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:39,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:39,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:35:39,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:35:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 23:35:39,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 23:35:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:35:39,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:40,371 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:40,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:40,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:40,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:35:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:40,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822483272] [2020-10-27 23:35:40,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:40,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:40,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139612531] [2020-10-27 23:35:40,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:40,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:40,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:40,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:40,435 INFO L87 Difference]: Start difference. First operand 7370 states and 12372 transitions. Second operand 4 states. [2020-10-27 23:35:41,080 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:44,123 INFO L93 Difference]: Finished difference Result 19882 states and 33394 transitions. [2020-10-27 23:35:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:44,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:35:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:44,160 INFO L225 Difference]: With dead ends: 19882 [2020-10-27 23:35:44,160 INFO L226 Difference]: Without dead ends: 12799 [2020-10-27 23:35:44,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12799 states. [2020-10-27 23:35:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12799 to 12796. [2020-10-27 23:35:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12796 states. [2020-10-27 23:35:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 21430 transitions. [2020-10-27 23:35:45,345 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 21430 transitions. Word has length 121 [2020-10-27 23:35:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:45,346 INFO L481 AbstractCegarLoop]: Abstraction has 12796 states and 21430 transitions. [2020-10-27 23:35:45,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 21430 transitions. [2020-10-27 23:35:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:35:45,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:45,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:45,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:35:45,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1818638548, now seen corresponding path program 1 times [2020-10-27 23:35:45,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:45,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411312870] [2020-10-27 23:35:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:50,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:50,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:35:50,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:35:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:35:50,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 23:35:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:35:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:50,991 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:35:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:51,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:51,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:51,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411312870] [2020-10-27 23:35:51,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:51,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:51,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923756365] [2020-10-27 23:35:51,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:51,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:51,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:51,054 INFO L87 Difference]: Start difference. First operand 12796 states and 21430 transitions. Second operand 4 states. [2020-10-27 23:35:51,702 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:35:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:54,782 INFO L93 Difference]: Finished difference Result 34690 states and 58122 transitions. [2020-10-27 23:35:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:54,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:35:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:54,850 INFO L225 Difference]: With dead ends: 34690 [2020-10-27 23:35:54,850 INFO L226 Difference]: Without dead ends: 22183 [2020-10-27 23:35:54,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22183 states. [2020-10-27 23:35:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22183 to 22123. [2020-10-27 23:35:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22123 states. [2020-10-27 23:35:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22123 states to 22123 states and 36959 transitions. [2020-10-27 23:35:56,726 INFO L78 Accepts]: Start accepts. Automaton has 22123 states and 36959 transitions. Word has length 121 [2020-10-27 23:35:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:56,727 INFO L481 AbstractCegarLoop]: Abstraction has 22123 states and 36959 transitions. [2020-10-27 23:35:56,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 22123 states and 36959 transitions. [2020-10-27 23:35:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:35:56,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:56,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:56,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:35:56,730 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:56,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1977188974, now seen corresponding path program 1 times [2020-10-27 23:35:56,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:56,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456893230] [2020-10-27 23:35:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:56,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:00,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:36:00,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:36:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3764 [2020-10-27 23:36:00,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 23:36:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:36:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:01,160 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:36:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:01,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456893230] [2020-10-27 23:36:01,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:01,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:01,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427829021] [2020-10-27 23:36:01,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:01,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:01,280 INFO L87 Difference]: Start difference. First operand 22123 states and 36959 transitions. Second operand 4 states. [2020-10-27 23:36:03,656 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:36:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:06,060 INFO L93 Difference]: Finished difference Result 59806 states and 99450 transitions. [2020-10-27 23:36:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:06,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:36:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:06,171 INFO L225 Difference]: With dead ends: 59806 [2020-10-27 23:36:06,172 INFO L226 Difference]: Without dead ends: 37915 [2020-10-27 23:36:06,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37915 states. [2020-10-27 23:36:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37915 to 37463. [2020-10-27 23:36:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37463 states. [2020-10-27 23:36:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37463 states to 37463 states and 61589 transitions. [2020-10-27 23:36:09,157 INFO L78 Accepts]: Start accepts. Automaton has 37463 states and 61589 transitions. Word has length 121 [2020-10-27 23:36:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:09,157 INFO L481 AbstractCegarLoop]: Abstraction has 37463 states and 61589 transitions. [2020-10-27 23:36:09,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:36:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 37463 states and 61589 transitions. [2020-10-27 23:36:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:36:09,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:09,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:09,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:36:09,159 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:09,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:09,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2065168613, now seen corresponding path program 1 times [2020-10-27 23:36:09,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:09,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983455890] [2020-10-27 23:36:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:09,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:14,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:14,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:36:14,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:36:14,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:36:14,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:36:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 23:36:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:36:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:14,820 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:36:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:14,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:14,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983455890] [2020-10-27 23:36:14,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:14,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:36:14,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442587623] [2020-10-27 23:36:14,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:36:14,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:14,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:36:14,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:14,875 INFO L87 Difference]: Start difference. First operand 37463 states and 61589 transitions. Second operand 5 states. [2020-10-27 23:36:17,475 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:36:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:21,679 INFO L93 Difference]: Finished difference Result 105423 states and 173243 transitions. [2020-10-27 23:36:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:36:21,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 23:36:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:21,839 INFO L225 Difference]: With dead ends: 105423 [2020-10-27 23:36:21,839 INFO L226 Difference]: Without dead ends: 68202 [2020-10-27 23:36:21,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:36:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68202 states. [2020-10-27 23:36:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68202 to 67287. [2020-10-27 23:36:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67287 states. [2020-10-27 23:36:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67287 states to 67287 states and 109781 transitions. [2020-10-27 23:36:27,164 INFO L78 Accepts]: Start accepts. Automaton has 67287 states and 109781 transitions. Word has length 121 [2020-10-27 23:36:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:27,164 INFO L481 AbstractCegarLoop]: Abstraction has 67287 states and 109781 transitions. [2020-10-27 23:36:27,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:36:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 67287 states and 109781 transitions. [2020-10-27 23:36:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:36:27,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:27,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:27,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:36:27,167 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:27,168 INFO L82 PathProgramCache]: Analyzing trace with hash -755430332, now seen corresponding path program 1 times [2020-10-27 23:36:27,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:27,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845736710] [2020-10-27 23:36:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:27,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:32,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:32,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:36:32,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:36:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:36:32,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 23:36:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:36:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:32,790 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:36:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:32,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:32,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:32,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:36:32,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:32,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:32,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:32,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:32,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:32,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845736710] [2020-10-27 23:36:32,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:32,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:32,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280305382] [2020-10-27 23:36:32,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:32,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:32,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:32,831 INFO L87 Difference]: Start difference. First operand 67287 states and 109781 transitions. Second operand 4 states. [2020-10-27 23:36:33,429 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:36:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:42,636 INFO L93 Difference]: Finished difference Result 184125 states and 300313 transitions. [2020-10-27 23:36:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:42,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:36:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:43,083 INFO L225 Difference]: With dead ends: 184125 [2020-10-27 23:36:43,083 INFO L226 Difference]: Without dead ends: 117062 [2020-10-27 23:36:43,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117062 states. [2020-10-27 23:36:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117062 to 117028. [2020-10-27 23:36:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117028 states. [2020-10-27 23:36:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117028 states to 117028 states and 189947 transitions. [2020-10-27 23:36:51,540 INFO L78 Accepts]: Start accepts. Automaton has 117028 states and 189947 transitions. Word has length 121 [2020-10-27 23:36:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:51,540 INFO L481 AbstractCegarLoop]: Abstraction has 117028 states and 189947 transitions. [2020-10-27 23:36:51,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:36:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 117028 states and 189947 transitions. [2020-10-27 23:36:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:36:51,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:51,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:51,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:36:51,543 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1898565603, now seen corresponding path program 1 times [2020-10-27 23:36:51,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:51,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327104981] [2020-10-27 23:36:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:52,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:36:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:57,241 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:36:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:57,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:36:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:57,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327104981] [2020-10-27 23:36:57,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:57,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:36:57,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661895303] [2020-10-27 23:36:57,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:36:57,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:57,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:36:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:57,287 INFO L87 Difference]: Start difference. First operand 117028 states and 189947 transitions. Second operand 5 states. [2020-10-27 23:36:59,793 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:37:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:14,586 INFO L93 Difference]: Finished difference Result 334122 states and 542127 transitions. [2020-10-27 23:37:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:37:14,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 23:37:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:15,165 INFO L225 Difference]: With dead ends: 334122 [2020-10-27 23:37:15,165 INFO L226 Difference]: Without dead ends: 217287 [2020-10-27 23:37:15,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:37:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217287 states. [2020-10-27 23:37:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217287 to 124708. [2020-10-27 23:37:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124708 states. [2020-10-27 23:37:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124708 states to 124708 states and 203003 transitions. [2020-10-27 23:37:25,472 INFO L78 Accepts]: Start accepts. Automaton has 124708 states and 203003 transitions. Word has length 121 [2020-10-27 23:37:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:25,473 INFO L481 AbstractCegarLoop]: Abstraction has 124708 states and 203003 transitions. [2020-10-27 23:37:25,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:37:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 124708 states and 203003 transitions. [2020-10-27 23:37:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 23:37:25,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:25,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:37:25,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:37:25,475 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash 763619792, now seen corresponding path program 1 times [2020-10-27 23:37:25,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:25,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583139805] [2020-10-27 23:37:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:37:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:31,094 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 23:37:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:31,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:31,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:37:31,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583139805] [2020-10-27 23:37:31,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:31,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:37:31,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009577325] [2020-10-27 23:37:31,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:37:31,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:31,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:37:31,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:37:31,133 INFO L87 Difference]: Start difference. First operand 124708 states and 203003 transitions. Second operand 4 states. [2020-10-27 23:37:31,742 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 23:37:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:49,483 INFO L93 Difference]: Finished difference Result 339178 states and 551807 transitions. [2020-10-27 23:37:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:37:49,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-27 23:37:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:49,915 INFO L225 Difference]: With dead ends: 339178 [2020-10-27 23:37:49,915 INFO L226 Difference]: Without dead ends: 214663 [2020-10-27 23:37:50,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214663 states.