/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:14:54,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:14:54,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:14:54,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:14:54,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:14:54,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:14:54,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:14:54,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:14:54,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:14:54,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:14:54,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:14:54,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:14:54,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:14:54,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:14:54,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:14:54,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:14:54,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:14:54,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:14:54,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:14:54,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:14:54,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:14:54,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:14:54,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:14:54,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:14:54,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:14:54,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:14:54,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:14:54,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:14:54,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:14:54,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:14:54,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:14:54,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:14:54,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:14:54,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:14:54,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:14:54,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:14:54,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:14:54,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:14:54,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:14:54,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:14:54,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:14:54,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 19:14:54,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:14:54,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:14:54,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:14:54,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:14:54,635 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:14:54,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:14:54,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:14:54,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:14:54,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:14:54,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:14:54,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:14:54,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:14:54,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:14:54,637 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:14:54,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:14:54,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:14:54,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:14:54,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:14:54,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:14:54,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:14:54,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:14:54,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:14:54,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:14:54,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:14:54,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:14:54,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:14:54,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:14:54,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:14:54,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:14:54,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:14:54,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:14:55,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:14:55,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:14:55,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:14:55,036 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:14:55,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:14:55,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45aeb44b/b689d3bc2b094c56ae469ae337622c30/FLAG4a76e9097 [2020-10-28 19:14:55,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:14:55,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:14:55,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45aeb44b/b689d3bc2b094c56ae469ae337622c30/FLAG4a76e9097 [2020-10-28 19:14:56,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45aeb44b/b689d3bc2b094c56ae469ae337622c30 [2020-10-28 19:14:56,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:14:56,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:14:56,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:14:56,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:14:56,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:14:56,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:14:56" (1/1) ... [2020-10-28 19:14:56,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6821bfea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:56, skipping insertion in model container [2020-10-28 19:14:56,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:14:56" (1/1) ... [2020-10-28 19:14:56,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:14:56,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:14:56,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:14:56,820 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:14:57,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:14:57,036 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:14:57,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57 WrapperNode [2020-10-28 19:14:57,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:14:57,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:14:57,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:14:57,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:14:57,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... [2020-10-28 19:14:57,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:14:57,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:14:57,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:14:57,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:14:57,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:14:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:14:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:14:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:14:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:14:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:14:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:14:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:14:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:14:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:14:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:14:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:14:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:14:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:14:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:14:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:14:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:14:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:14:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:14:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:14:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:14:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:14:58,488 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:14:58,489 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:14:58,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:14:58 BoogieIcfgContainer [2020-10-28 19:14:58,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:14:58,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:14:58,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:14:58,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:14:58,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:14:56" (1/3) ... [2020-10-28 19:14:58,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee78e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:14:58, skipping insertion in model container [2020-10-28 19:14:58,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:14:57" (2/3) ... [2020-10-28 19:14:58,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee78e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:14:58, skipping insertion in model container [2020-10-28 19:14:58,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:14:58" (3/3) ... [2020-10-28 19:14:58,499 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:14:58,511 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:14:58,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:14:58,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:14:58,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:14:58,559 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:14:58,559 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:14:58,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:14:58,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:14:58,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:14:58,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:14:58,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:14:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states. [2020-10-28 19:14:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:14:58,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:58,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:58,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:58,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1244911398, now seen corresponding path program 1 times [2020-10-28 19:14:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:58,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731518628] [2020-10-28 19:14:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:03,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:04,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:04,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:15:04,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:15:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 19:15:04,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:04,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:04,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:15:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 19:15:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 19:15:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 19:15:04,667 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:04,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:04,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:04,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:15:04,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:04,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:15:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:04,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731518628] [2020-10-28 19:15:04,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:04,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:15:04,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411991110] [2020-10-28 19:15:04,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:15:04,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:15:04,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:15:04,845 INFO L87 Difference]: Start difference. First operand 333 states. Second operand 4 states. [2020-10-28 19:15:05,265 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:15:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:07,192 INFO L93 Difference]: Finished difference Result 667 states and 1158 transitions. [2020-10-28 19:15:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:07,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 19:15:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:07,222 INFO L225 Difference]: With dead ends: 667 [2020-10-28 19:15:07,223 INFO L226 Difference]: Without dead ends: 530 [2020-10-28 19:15:07,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-28 19:15:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 527. [2020-10-28 19:15:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-10-28 19:15:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 784 transitions. [2020-10-28 19:15:07,350 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 784 transitions. Word has length 155 [2020-10-28 19:15:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:07,351 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 784 transitions. [2020-10-28 19:15:07,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:15:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 784 transitions. [2020-10-28 19:15:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:15:07,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:07,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:07,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:15:07,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:07,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1928097310, now seen corresponding path program 1 times [2020-10-28 19:15:07,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:07,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611608786] [2020-10-28 19:15:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:07,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:07,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:12,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:12,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:15:12,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:15:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 19:15:12,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:12,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:15:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 19:15:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:12,961 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:15:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:12,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:13,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611608786] [2020-10-28 19:15:13,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:13,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:13,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092489760] [2020-10-28 19:15:13,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:13,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:13,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:13,075 INFO L87 Difference]: Start difference. First operand 527 states and 784 transitions. Second operand 5 states. [2020-10-28 19:15:15,136 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:15:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:16,179 INFO L93 Difference]: Finished difference Result 1517 states and 2249 transitions. [2020-10-28 19:15:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:15:16,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 19:15:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:16,188 INFO L225 Difference]: With dead ends: 1517 [2020-10-28 19:15:16,188 INFO L226 Difference]: Without dead ends: 1007 [2020-10-28 19:15:16,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-28 19:15:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1004. [2020-10-28 19:15:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-28 19:15:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1476 transitions. [2020-10-28 19:15:16,313 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1476 transitions. Word has length 155 [2020-10-28 19:15:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:16,313 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1476 transitions. [2020-10-28 19:15:16,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1476 transitions. [2020-10-28 19:15:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:15:16,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:16,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:16,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:15:16,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:16,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1360302402, now seen corresponding path program 1 times [2020-10-28 19:15:16,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:16,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318405598] [2020-10-28 19:15:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:16,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:21,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:21,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 19:15:21,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:15:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 19:15:21,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:21,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:21,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:21,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:15:21,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:15:21,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:21,982 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:22,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:15:22,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:22,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:22,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318405598] [2020-10-28 19:15:22,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:22,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:22,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550774792] [2020-10-28 19:15:22,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:22,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:22,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:22,108 INFO L87 Difference]: Start difference. First operand 1004 states and 1476 transitions. Second operand 5 states. [2020-10-28 19:15:24,281 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:15:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:25,388 INFO L93 Difference]: Finished difference Result 2741 states and 4036 transitions. [2020-10-28 19:15:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:15:25,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 19:15:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:25,400 INFO L225 Difference]: With dead ends: 2741 [2020-10-28 19:15:25,401 INFO L226 Difference]: Without dead ends: 1916 [2020-10-28 19:15:25,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-10-28 19:15:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1913. [2020-10-28 19:15:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-28 19:15:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2776 transitions. [2020-10-28 19:15:25,535 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2776 transitions. Word has length 156 [2020-10-28 19:15:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:25,536 INFO L481 AbstractCegarLoop]: Abstraction has 1913 states and 2776 transitions. [2020-10-28 19:15:25,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2776 transitions. [2020-10-28 19:15:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:15:25,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:25,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:25,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:15:25,542 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1663776771, now seen corresponding path program 1 times [2020-10-28 19:15:25,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:25,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628986399] [2020-10-28 19:15:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:25,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:30,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:30,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:15:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 19:15:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:31,141 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:31,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 19:15:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:31,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628986399] [2020-10-28 19:15:31,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:31,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:31,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688916957] [2020-10-28 19:15:31,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:31,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:31,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:31,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:31,272 INFO L87 Difference]: Start difference. First operand 1913 states and 2776 transitions. Second operand 5 states. [2020-10-28 19:15:33,331 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:15:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:34,443 INFO L93 Difference]: Finished difference Result 5509 states and 7995 transitions. [2020-10-28 19:15:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:15:34,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:15:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:34,462 INFO L225 Difference]: With dead ends: 5509 [2020-10-28 19:15:34,463 INFO L226 Difference]: Without dead ends: 3733 [2020-10-28 19:15:34,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2020-10-28 19:15:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3730. [2020-10-28 19:15:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3730 states. [2020-10-28 19:15:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5357 transitions. [2020-10-28 19:15:34,709 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5357 transitions. Word has length 157 [2020-10-28 19:15:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:34,709 INFO L481 AbstractCegarLoop]: Abstraction has 3730 states and 5357 transitions. [2020-10-28 19:15:34,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5357 transitions. [2020-10-28 19:15:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:15:34,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:34,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:34,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:15:34,717 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:34,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2107969439, now seen corresponding path program 1 times [2020-10-28 19:15:34,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:34,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175266008] [2020-10-28 19:15:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:36,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:39,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:15:39,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:15:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:15:39,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:39,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:15:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 19:15:39,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:40,216 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:40,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:40,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:40,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:15:40,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:40,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:40,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175266008] [2020-10-28 19:15:40,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:40,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:40,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125701729] [2020-10-28 19:15:40,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:40,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:40,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:40,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:40,332 INFO L87 Difference]: Start difference. First operand 3730 states and 5357 transitions. Second operand 5 states. [2020-10-28 19:15:42,733 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:15:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:43,937 INFO L93 Difference]: Finished difference Result 10241 states and 14723 transitions. [2020-10-28 19:15:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:15:43,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 19:15:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:43,972 INFO L225 Difference]: With dead ends: 10241 [2020-10-28 19:15:43,972 INFO L226 Difference]: Without dead ends: 7166 [2020-10-28 19:15:43,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7166 states. [2020-10-28 19:15:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7166 to 7163. [2020-10-28 19:15:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7163 states. [2020-10-28 19:15:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 10135 transitions. [2020-10-28 19:15:44,581 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 10135 transitions. Word has length 158 [2020-10-28 19:15:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:44,582 INFO L481 AbstractCegarLoop]: Abstraction has 7163 states and 10135 transitions. [2020-10-28 19:15:44,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 10135 transitions. [2020-10-28 19:15:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 19:15:44,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:44,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:44,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:15:44,595 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1218845477, now seen corresponding path program 1 times [2020-10-28 19:15:44,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:44,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375070250] [2020-10-28 19:15:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 19:15:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:15:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:50,110 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:50,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375070250] [2020-10-28 19:15:50,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:50,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:50,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807774876] [2020-10-28 19:15:50,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:50,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:50,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:50,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:50,217 INFO L87 Difference]: Start difference. First operand 7163 states and 10135 transitions. Second operand 5 states. [2020-10-28 19:15:52,600 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:15:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:54,013 INFO L93 Difference]: Finished difference Result 19095 states and 26913 transitions. [2020-10-28 19:15:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:15:54,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 19:15:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:54,075 INFO L225 Difference]: With dead ends: 19095 [2020-10-28 19:15:54,075 INFO L226 Difference]: Without dead ends: 12496 [2020-10-28 19:15:54,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12496 states. [2020-10-28 19:15:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12496 to 12493. [2020-10-28 19:15:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12493 states. [2020-10-28 19:15:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12493 states to 12493 states and 17337 transitions. [2020-10-28 19:15:54,986 INFO L78 Accepts]: Start accepts. Automaton has 12493 states and 17337 transitions. Word has length 159 [2020-10-28 19:15:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:54,987 INFO L481 AbstractCegarLoop]: Abstraction has 12493 states and 17337 transitions. [2020-10-28 19:15:54,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 12493 states and 17337 transitions. [2020-10-28 19:15:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:15:55,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:55,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:55,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:15:55,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1595286210, now seen corresponding path program 1 times [2020-10-28 19:15:55,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:55,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699685091] [2020-10-28 19:15:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:16:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:16:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:16:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:00,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:16:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:16:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:00,471 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:00,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:00,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699685091] [2020-10-28 19:16:00,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:00,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:00,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603102001] [2020-10-28 19:16:00,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:00,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:00,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:00,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:00,537 INFO L87 Difference]: Start difference. First operand 12493 states and 17337 transitions. Second operand 5 states. [2020-10-28 19:16:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:02,680 INFO L93 Difference]: Finished difference Result 22035 states and 30564 transitions. [2020-10-28 19:16:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:02,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 19:16:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:02,703 INFO L225 Difference]: With dead ends: 22035 [2020-10-28 19:16:02,704 INFO L226 Difference]: Without dead ends: 9578 [2020-10-28 19:16:02,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:16:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2020-10-28 19:16:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9578. [2020-10-28 19:16:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9578 states. [2020-10-28 19:16:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 13272 transitions. [2020-10-28 19:16:03,349 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 13272 transitions. Word has length 160 [2020-10-28 19:16:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:03,349 INFO L481 AbstractCegarLoop]: Abstraction has 9578 states and 13272 transitions. [2020-10-28 19:16:03,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 13272 transitions. [2020-10-28 19:16:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 19:16:03,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:03,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:03,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:16:03,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:03,366 INFO L82 PathProgramCache]: Analyzing trace with hash -824081728, now seen corresponding path program 1 times [2020-10-28 19:16:03,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:03,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858867888] [2020-10-28 19:16:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 19:16:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:08,863 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:08,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:16:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:08,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:08,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858867888] [2020-10-28 19:16:08,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:08,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:08,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426721534] [2020-10-28 19:16:08,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:08,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:08,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:08,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:08,949 INFO L87 Difference]: Start difference. First operand 9578 states and 13272 transitions. Second operand 5 states. [2020-10-28 19:16:11,890 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:16:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:13,332 INFO L93 Difference]: Finished difference Result 24539 states and 34003 transitions. [2020-10-28 19:16:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:13,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 19:16:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:13,363 INFO L225 Difference]: With dead ends: 24539 [2020-10-28 19:16:13,363 INFO L226 Difference]: Without dead ends: 15655 [2020-10-28 19:16:13,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15655 states. [2020-10-28 19:16:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15655 to 15651. [2020-10-28 19:16:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15651 states. [2020-10-28 19:16:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15651 states to 15651 states and 21381 transitions. [2020-10-28 19:16:14,476 INFO L78 Accepts]: Start accepts. Automaton has 15651 states and 21381 transitions. Word has length 162 [2020-10-28 19:16:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:14,477 INFO L481 AbstractCegarLoop]: Abstraction has 15651 states and 21381 transitions. [2020-10-28 19:16:14,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 15651 states and 21381 transitions. [2020-10-28 19:16:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 19:16:14,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:14,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:14,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:16:14,496 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash 253027293, now seen corresponding path program 1 times [2020-10-28 19:16:14,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:14,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087006565] [2020-10-28 19:16:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:19,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 19:16:19,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:16:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:16:19,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:19,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 19:16:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:19,968 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:19,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:19,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:16:19,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:19,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:19,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:20,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087006565] [2020-10-28 19:16:20,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:20,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:20,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630198093] [2020-10-28 19:16:20,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:20,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:20,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:20,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:20,034 INFO L87 Difference]: Start difference. First operand 15651 states and 21381 transitions. Second operand 5 states. [2020-10-28 19:16:20,448 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:16:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:24,290 INFO L93 Difference]: Finished difference Result 28083 states and 38356 transitions. [2020-10-28 19:16:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:16:24,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 19:16:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:24,316 INFO L225 Difference]: With dead ends: 28083 [2020-10-28 19:16:24,316 INFO L226 Difference]: Without dead ends: 15626 [2020-10-28 19:16:24,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15626 states. [2020-10-28 19:16:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15626 to 15623. [2020-10-28 19:16:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15623 states. [2020-10-28 19:16:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15623 states to 15623 states and 21277 transitions. [2020-10-28 19:16:25,554 INFO L78 Accepts]: Start accepts. Automaton has 15623 states and 21277 transitions. Word has length 163 [2020-10-28 19:16:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:25,555 INFO L481 AbstractCegarLoop]: Abstraction has 15623 states and 21277 transitions. [2020-10-28 19:16:25,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 15623 states and 21277 transitions. [2020-10-28 19:16:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 19:16:25,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:25,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:25,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:16:25,569 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash 418362502, now seen corresponding path program 1 times [2020-10-28 19:16:25,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:25,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918015095] [2020-10-28 19:16:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:30,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 19:16:30,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:16:30,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:16:30,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:30,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 19:16:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:16:30,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:31,026 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:31,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:31,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918015095] [2020-10-28 19:16:31,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:31,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:31,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17495234] [2020-10-28 19:16:31,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:31,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:31,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:31,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:31,074 INFO L87 Difference]: Start difference. First operand 15623 states and 21277 transitions. Second operand 5 states. [2020-10-28 19:16:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:33,404 INFO L93 Difference]: Finished difference Result 27887 states and 38033 transitions. [2020-10-28 19:16:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:33,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 19:16:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:33,421 INFO L225 Difference]: With dead ends: 27887 [2020-10-28 19:16:33,421 INFO L226 Difference]: Without dead ends: 12686 [2020-10-28 19:16:33,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:16:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12686 states. [2020-10-28 19:16:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12686 to 12686. [2020-10-28 19:16:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12686 states. [2020-10-28 19:16:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12686 states to 12686 states and 17249 transitions. [2020-10-28 19:16:34,478 INFO L78 Accepts]: Start accepts. Automaton has 12686 states and 17249 transitions. Word has length 164 [2020-10-28 19:16:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:34,478 INFO L481 AbstractCegarLoop]: Abstraction has 12686 states and 17249 transitions. [2020-10-28 19:16:34,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 12686 states and 17249 transitions. [2020-10-28 19:16:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 19:16:34,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:34,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:34,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:16:34,489 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:34,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1470546161, now seen corresponding path program 1 times [2020-10-28 19:16:34,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:34,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533026744] [2020-10-28 19:16:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:39,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 19:16:39,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:16:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:16:39,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:39,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:16:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:16:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:39,933 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:39,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533026744] [2020-10-28 19:16:39,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:39,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:39,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109233124] [2020-10-28 19:16:39,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:39,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:39,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:39,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:39,989 INFO L87 Difference]: Start difference. First operand 12686 states and 17249 transitions. Second operand 5 states. [2020-10-28 19:16:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:42,103 INFO L93 Difference]: Finished difference Result 21871 states and 29808 transitions. [2020-10-28 19:16:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:42,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 19:16:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:42,111 INFO L225 Difference]: With dead ends: 21871 [2020-10-28 19:16:42,111 INFO L226 Difference]: Without dead ends: 9473 [2020-10-28 19:16:42,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:16:42,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2020-10-28 19:16:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 9473. [2020-10-28 19:16:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9473 states. [2020-10-28 19:16:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 12907 transitions. [2020-10-28 19:16:42,693 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 12907 transitions. Word has length 165 [2020-10-28 19:16:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:42,694 INFO L481 AbstractCegarLoop]: Abstraction has 9473 states and 12907 transitions. [2020-10-28 19:16:42,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 12907 transitions. [2020-10-28 19:16:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 19:16:42,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:42,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:42,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:16:42,701 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash 425873488, now seen corresponding path program 1 times [2020-10-28 19:16:42,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:42,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173793969] [2020-10-28 19:16:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:47,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:16:47,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:48,176 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:48,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173793969] [2020-10-28 19:16:48,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:48,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:48,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019723239] [2020-10-28 19:16:48,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:48,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:48,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:48,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:48,222 INFO L87 Difference]: Start difference. First operand 9473 states and 12907 transitions. Second operand 5 states. [2020-10-28 19:16:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:51,596 INFO L93 Difference]: Finished difference Result 22713 states and 31822 transitions. [2020-10-28 19:16:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:51,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 19:16:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:51,622 INFO L225 Difference]: With dead ends: 22713 [2020-10-28 19:16:51,623 INFO L226 Difference]: Without dead ends: 16760 [2020-10-28 19:16:51,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:16:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2020-10-28 19:16:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 10821. [2020-10-28 19:16:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10821 states. [2020-10-28 19:16:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10821 states to 10821 states and 14445 transitions. [2020-10-28 19:16:52,491 INFO L78 Accepts]: Start accepts. Automaton has 10821 states and 14445 transitions. Word has length 168 [2020-10-28 19:16:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:52,491 INFO L481 AbstractCegarLoop]: Abstraction has 10821 states and 14445 transitions. [2020-10-28 19:16:52,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 10821 states and 14445 transitions. [2020-10-28 19:16:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 19:16:52,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:52,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:52,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:16:52,502 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:52,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:52,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1497459590, now seen corresponding path program 1 times [2020-10-28 19:16:52,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:52,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436935668] [2020-10-28 19:16:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 19:16:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:58,027 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:58,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:58,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:58,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:16:58,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:58,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:58,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436935668] [2020-10-28 19:16:58,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:58,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:58,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25653274] [2020-10-28 19:16:58,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:58,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:58,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:58,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:58,182 INFO L87 Difference]: Start difference. First operand 10821 states and 14445 transitions. Second operand 5 states. [2020-10-28 19:16:58,599 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:17:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:02,213 INFO L93 Difference]: Finished difference Result 17997 states and 24048 transitions. [2020-10-28 19:17:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:02,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 19:17:02,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:02,228 INFO L225 Difference]: With dead ends: 17997 [2020-10-28 19:17:02,228 INFO L226 Difference]: Without dead ends: 10818 [2020-10-28 19:17:02,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10818 states. [2020-10-28 19:17:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10818 to 10815. [2020-10-28 19:17:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10815 states. [2020-10-28 19:17:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10815 states to 10815 states and 14370 transitions. [2020-10-28 19:17:03,079 INFO L78 Accepts]: Start accepts. Automaton has 10815 states and 14370 transitions. Word has length 168 [2020-10-28 19:17:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:03,079 INFO L481 AbstractCegarLoop]: Abstraction has 10815 states and 14370 transitions. [2020-10-28 19:17:03,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10815 states and 14370 transitions. [2020-10-28 19:17:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 19:17:03,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:03,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:03,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:17:03,086 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:03,087 INFO L82 PathProgramCache]: Analyzing trace with hash 521083067, now seen corresponding path program 1 times [2020-10-28 19:17:03,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:03,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375332592] [2020-10-28 19:17:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 19:17:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 19:17:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:08,546 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:08,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:08,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:08,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:08,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375332592] [2020-10-28 19:17:08,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:08,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:08,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546550072] [2020-10-28 19:17:08,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:08,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:08,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:08,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:08,598 INFO L87 Difference]: Start difference. First operand 10815 states and 14370 transitions. Second operand 5 states. [2020-10-28 19:17:09,000 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:17:11,358 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:17:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:12,487 INFO L93 Difference]: Finished difference Result 22701 states and 31297 transitions. [2020-10-28 19:17:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:17:12,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 19:17:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:12,578 INFO L225 Difference]: With dead ends: 22701 [2020-10-28 19:17:12,578 INFO L226 Difference]: Without dead ends: 18912 [2020-10-28 19:17:12,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18912 states. [2020-10-28 19:17:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18912 to 18909. [2020-10-28 19:17:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18909 states. [2020-10-28 19:17:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18909 states to 18909 states and 25330 transitions. [2020-10-28 19:17:13,862 INFO L78 Accepts]: Start accepts. Automaton has 18909 states and 25330 transitions. Word has length 169 [2020-10-28 19:17:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:13,862 INFO L481 AbstractCegarLoop]: Abstraction has 18909 states and 25330 transitions. [2020-10-28 19:17:13,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 18909 states and 25330 transitions. [2020-10-28 19:17:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 19:17:13,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:13,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:13,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:17:13,873 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:13,873 INFO L82 PathProgramCache]: Analyzing trace with hash -880403057, now seen corresponding path program 1 times [2020-10-28 19:17:13,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:13,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85265190] [2020-10-28 19:17:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:18,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 19:17:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:17:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:18,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:17:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:17:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:19,320 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:19,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85265190] [2020-10-28 19:17:19,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:19,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:19,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686666321] [2020-10-28 19:17:19,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:19,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:19,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:19,366 INFO L87 Difference]: Start difference. First operand 18909 states and 25330 transitions. Second operand 5 states. [2020-10-28 19:17:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:22,092 INFO L93 Difference]: Finished difference Result 35099 states and 47007 transitions. [2020-10-28 19:17:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:22,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 19:17:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:22,115 INFO L225 Difference]: With dead ends: 35099 [2020-10-28 19:17:22,115 INFO L226 Difference]: Without dead ends: 16347 [2020-10-28 19:17:22,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16347 states. [2020-10-28 19:17:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16347 to 16347. [2020-10-28 19:17:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16347 states. [2020-10-28 19:17:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16347 states to 16347 states and 21871 transitions. [2020-10-28 19:17:23,442 INFO L78 Accepts]: Start accepts. Automaton has 16347 states and 21871 transitions. Word has length 169 [2020-10-28 19:17:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:23,442 INFO L481 AbstractCegarLoop]: Abstraction has 16347 states and 21871 transitions. [2020-10-28 19:17:23,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 16347 states and 21871 transitions. [2020-10-28 19:17:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 19:17:23,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:23,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:23,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:17:23,452 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:23,452 INFO L82 PathProgramCache]: Analyzing trace with hash 621799752, now seen corresponding path program 1 times [2020-10-28 19:17:23,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:23,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981725102] [2020-10-28 19:17:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:17:28,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 19:17:28,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 19:17:28,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:28,949 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:28,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:29,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981725102] [2020-10-28 19:17:29,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:29,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:29,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171711757] [2020-10-28 19:17:29,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:29,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:29,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:29,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:29,014 INFO L87 Difference]: Start difference. First operand 16347 states and 21871 transitions. Second operand 5 states. [2020-10-28 19:17:29,432 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:17:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:32,932 INFO L93 Difference]: Finished difference Result 28035 states and 37492 transitions. [2020-10-28 19:17:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:32,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 19:17:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:32,958 INFO L225 Difference]: With dead ends: 28035 [2020-10-28 19:17:32,959 INFO L226 Difference]: Without dead ends: 16347 [2020-10-28 19:17:32,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16347 states. [2020-10-28 19:17:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16347 to 16344. [2020-10-28 19:17:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16344 states. [2020-10-28 19:17:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16344 states to 16344 states and 21760 transitions. [2020-10-28 19:17:34,385 INFO L78 Accepts]: Start accepts. Automaton has 16344 states and 21760 transitions. Word has length 171 [2020-10-28 19:17:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:34,385 INFO L481 AbstractCegarLoop]: Abstraction has 16344 states and 21760 transitions. [2020-10-28 19:17:34,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 16344 states and 21760 transitions. [2020-10-28 19:17:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 19:17:34,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:34,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:34,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:17:34,396 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1705332206, now seen corresponding path program 1 times [2020-10-28 19:17:34,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:34,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473882911] [2020-10-28 19:17:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:39,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 19:17:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:17:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 19:17:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:39,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:17:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 19:17:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:39,836 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:39,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473882911] [2020-10-28 19:17:39,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:39,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:39,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269826823] [2020-10-28 19:17:39,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:39,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:39,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:39,880 INFO L87 Difference]: Start difference. First operand 16344 states and 21760 transitions. Second operand 4 states. [2020-10-28 19:17:43,567 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:17:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:44,384 INFO L93 Difference]: Finished difference Result 39004 states and 52899 transitions. [2020-10-28 19:17:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:44,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-28 19:17:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:44,409 INFO L225 Difference]: With dead ends: 39004 [2020-10-28 19:17:44,409 INFO L226 Difference]: Without dead ends: 23959 [2020-10-28 19:17:44,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:44,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23959 states. [2020-10-28 19:17:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23959 to 21092. [2020-10-28 19:17:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21092 states. [2020-10-28 19:17:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21092 states to 21092 states and 29054 transitions. [2020-10-28 19:17:46,270 INFO L78 Accepts]: Start accepts. Automaton has 21092 states and 29054 transitions. Word has length 172 [2020-10-28 19:17:46,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:46,270 INFO L481 AbstractCegarLoop]: Abstraction has 21092 states and 29054 transitions. [2020-10-28 19:17:46,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:17:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 21092 states and 29054 transitions. [2020-10-28 19:17:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 19:17:46,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:46,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:46,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:17:46,282 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:46,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1010928561, now seen corresponding path program 1 times [2020-10-28 19:17:46,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:46,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157931254] [2020-10-28 19:17:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:47,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 19:17:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:51,718 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:51,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:51,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157931254] [2020-10-28 19:17:51,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:51,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:51,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194184599] [2020-10-28 19:17:51,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:51,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:51,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:51,766 INFO L87 Difference]: Start difference. First operand 21092 states and 29054 transitions. Second operand 4 states. [2020-10-28 19:17:55,904 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:17:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:57,411 INFO L93 Difference]: Finished difference Result 53108 states and 74498 transitions. [2020-10-28 19:17:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:57,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-28 19:17:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:57,444 INFO L225 Difference]: With dead ends: 53108 [2020-10-28 19:17:57,444 INFO L226 Difference]: Without dead ends: 33095 [2020-10-28 19:17:57,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33095 states. [2020-10-28 19:18:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33095 to 29260. [2020-10-28 19:18:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29260 states. [2020-10-28 19:18:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29260 states to 29260 states and 41540 transitions. [2020-10-28 19:18:00,316 INFO L78 Accepts]: Start accepts. Automaton has 29260 states and 41540 transitions. Word has length 175 [2020-10-28 19:18:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:00,316 INFO L481 AbstractCegarLoop]: Abstraction has 29260 states and 41540 transitions. [2020-10-28 19:18:00,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 29260 states and 41540 transitions. [2020-10-28 19:18:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:18:00,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:00,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:00,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:18:00,328 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1906993990, now seen corresponding path program 1 times [2020-10-28 19:18:00,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:00,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970400348] [2020-10-28 19:18:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:05,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:18:05,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:05,750 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:05,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:05,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970400348] [2020-10-28 19:18:05,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:05,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:05,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919132931] [2020-10-28 19:18:05,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:05,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:05,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:05,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:05,896 INFO L87 Difference]: Start difference. First operand 29260 states and 41540 transitions. Second operand 4 states. [2020-10-28 19:18:09,966 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:18:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:12,891 INFO L93 Difference]: Finished difference Result 73792 states and 107096 transitions. [2020-10-28 19:18:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:12,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-28 19:18:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:12,961 INFO L225 Difference]: With dead ends: 73792 [2020-10-28 19:18:12,961 INFO L226 Difference]: Without dead ends: 45391 [2020-10-28 19:18:12,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45391 states. [2020-10-28 19:18:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45391 to 44108. [2020-10-28 19:18:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44108 states. [2020-10-28 19:18:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44108 states to 44108 states and 64362 transitions. [2020-10-28 19:18:17,547 INFO L78 Accepts]: Start accepts. Automaton has 44108 states and 64362 transitions. Word has length 178 [2020-10-28 19:18:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:17,548 INFO L481 AbstractCegarLoop]: Abstraction has 44108 states and 64362 transitions. [2020-10-28 19:18:17,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 44108 states and 64362 transitions. [2020-10-28 19:18:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 19:18:17,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:17,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:17,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 19:18:17,556 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:17,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1691360516, now seen corresponding path program 1 times [2020-10-28 19:18:17,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:17,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483746959] [2020-10-28 19:18:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:22,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 19:18:22,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 19:18:22,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:22,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 19:18:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 19:18:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 19:18:22,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:23,070 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:23,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:23,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:23,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483746959] [2020-10-28 19:18:23,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:23,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:18:23,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317864218] [2020-10-28 19:18:23,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:18:23,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:23,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:18:23,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:23,122 INFO L87 Difference]: Start difference. First operand 44108 states and 64362 transitions. Second operand 7 states. [2020-10-28 19:18:23,561 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:18:28,330 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:18:28,718 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:18:29,153 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:18:35,481 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:18:36,010 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 213