/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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:16:48,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:16:48,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:16:48,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:16:48,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:16:48,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:16:48,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:16:48,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:16:48,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:16:48,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:16:48,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:16:48,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:16:48,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:16:48,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:16:48,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:16:48,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:16:48,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:16:48,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:16:48,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:16:48,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:16:48,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:16:48,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:16:48,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:16:48,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:16:48,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:16:48,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:16:48,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:16:48,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:16:48,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:16:48,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:16:48,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:16:48,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:16:48,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:16:48,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:16:48,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:16:48,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:16:48,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:16:48,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:16:48,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:16:48,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:16:48,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:16:48,725 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 19:16:48,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:16:48,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:16:48,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:16:48,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:16:48,763 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:16:48,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:16:48,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:16:48,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:16:48,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:16:48,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:16:48,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:16:48,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:16:48,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:16:48,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:16:48,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:16:48,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:16:48,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:16:48,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:16:48,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:16:48,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:16:48,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:16:48,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:16:48,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:16:48,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:16:48,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:16:48,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:16:48,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:16:48,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:16:48,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:16:48,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:16:49,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:16:49,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:16:49,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:16:49,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:16:49,209 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:16:49,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:16:49,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61954d894/403777ca5ad34b6fae40a072cfff6bb8/FLAGa8aac1442 [2020-10-28 19:16:50,038 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:16:50,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:16:50,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61954d894/403777ca5ad34b6fae40a072cfff6bb8/FLAGa8aac1442 [2020-10-28 19:16:50,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61954d894/403777ca5ad34b6fae40a072cfff6bb8 [2020-10-28 19:16:50,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:16:50,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:16:50,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:16:50,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:16:50,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:16:50,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:16:50" (1/1) ... [2020-10-28 19:16:50,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3895647d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:50, skipping insertion in model container [2020-10-28 19:16:50,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:16:50" (1/1) ... [2020-10-28 19:16:50,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:16:50,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:16:50,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:16:50,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:16:51,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:16:51,223 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:16:51,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51 WrapperNode [2020-10-28 19:16:51,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:16:51,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:16:51,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:16:51,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:16:51,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (1/1) ... [2020-10-28 19:16:51,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:16:51,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:16:51,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:16:51,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:16:51,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (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 19:16:51,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:16:51,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:16:51,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:16:51,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:16:51,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:16:51,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:16:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:16:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:16:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:16:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:16:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:16:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:16:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:16:51,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:16:51,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:16:51,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:16:53,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:16:53,494 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:16:53,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:16:53 BoogieIcfgContainer [2020-10-28 19:16:53,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:16:53,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:16:53,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:16:53,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:16:53,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:16:50" (1/3) ... [2020-10-28 19:16:53,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ba2be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:16:53, skipping insertion in model container [2020-10-28 19:16:53,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:51" (2/3) ... [2020-10-28 19:16:53,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ba2be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:16:53, skipping insertion in model container [2020-10-28 19:16:53,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:16:53" (3/3) ... [2020-10-28 19:16:53,508 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:16:53,521 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:16:53,527 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:16:53,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:16:53,574 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:16:53,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:16:53,574 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:16:53,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:16:53,575 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:16:53,575 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:16:53,575 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:16:53,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:16:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states. [2020-10-28 19:16:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:16:53,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:53,653 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 19:16:53,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1681594957, now seen corresponding path program 1 times [2020-10-28 19:16:53,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:53,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501668330] [2020-10-28 19:16:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:56,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:59,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:16:59,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:16:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:16:59,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:59,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:16:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 19:16:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:16:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:16:59,780 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:59,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:59,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:59,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 19:16:59,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:59,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:16:59,945 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 19:16:59,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501668330] [2020-10-28 19:16:59,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:59,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:16:59,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384959415] [2020-10-28 19:16:59,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:16:59,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:59,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:16:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:16:59,973 INFO L87 Difference]: Start difference. First operand 433 states. Second operand 4 states. [2020-10-28 19:17:00,481 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:17:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:03,932 INFO L93 Difference]: Finished difference Result 791 states and 1387 transitions. [2020-10-28 19:17:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:03,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 19:17:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:03,973 INFO L225 Difference]: With dead ends: 791 [2020-10-28 19:17:03,974 INFO L226 Difference]: Without dead ends: 624 [2020-10-28 19:17:03,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-28 19:17:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2020-10-28 19:17:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-28 19:17:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 915 transitions. [2020-10-28 19:17:04,110 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 915 transitions. Word has length 155 [2020-10-28 19:17:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:04,114 INFO L481 AbstractCegarLoop]: Abstraction has 621 states and 915 transitions. [2020-10-28 19:17:04,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:17:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 915 transitions. [2020-10-28 19:17:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:17:04,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:04,120 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 19:17:04,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:17:04,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:04,137 INFO L82 PathProgramCache]: Analyzing trace with hash 942881184, now seen corresponding path program 1 times [2020-10-28 19:17:04,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:04,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380300953] [2020-10-28 19:17:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:09,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:17:09,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:17:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 19:17:09,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:09,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:17:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 19:17:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:09,801 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:09,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:09,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:17:09,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:09,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:09,886 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 19:17:09,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380300953] [2020-10-28 19:17:09,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:09,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:09,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061775287] [2020-10-28 19:17:09,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:09,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:09,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:09,890 INFO L87 Difference]: Start difference. First operand 621 states and 915 transitions. Second operand 4 states. [2020-10-28 19:17:10,356 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:17:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:13,097 INFO L93 Difference]: Finished difference Result 1265 states and 1919 transitions. [2020-10-28 19:17:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:13,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-28 19:17:13,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:13,110 INFO L225 Difference]: With dead ends: 1265 [2020-10-28 19:17:13,111 INFO L226 Difference]: Without dead ends: 1042 [2020-10-28 19:17:13,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-10-28 19:17:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1039. [2020-10-28 19:17:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-10-28 19:17:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1554 transitions. [2020-10-28 19:17:13,191 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1554 transitions. Word has length 155 [2020-10-28 19:17:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:13,193 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1554 transitions. [2020-10-28 19:17:13,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:17:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1554 transitions. [2020-10-28 19:17:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:17:13,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:13,199 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 19:17:13,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:17:13,199 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:13,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash 932384119, now seen corresponding path program 1 times [2020-10-28 19:17:13,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:13,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221404802] [2020-10-28 19:17:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:18,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:18,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:17:18,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:17:18,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:17:18,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:18,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 19:17:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:18,875 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:18,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:18,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:18,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:17:18,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:18,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:18,990 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 19:17:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221404802] [2020-10-28 19:17:18,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:18,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:18,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896156960] [2020-10-28 19:17:18,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:18,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:18,993 INFO L87 Difference]: Start difference. First operand 1039 states and 1554 transitions. Second operand 5 states. [2020-10-28 19:17:21,730 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:17:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:23,174 INFO L93 Difference]: Finished difference Result 3032 states and 4523 transitions. [2020-10-28 19:17:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:23,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 19:17:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:23,187 INFO L225 Difference]: With dead ends: 3032 [2020-10-28 19:17:23,187 INFO L226 Difference]: Without dead ends: 2004 [2020-10-28 19:17:23,190 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 19:17:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-28 19:17:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1973. [2020-10-28 19:17:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1973 states. [2020-10-28 19:17:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2924 transitions. [2020-10-28 19:17:23,292 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2924 transitions. Word has length 155 [2020-10-28 19:17:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:23,292 INFO L481 AbstractCegarLoop]: Abstraction has 1973 states and 2924 transitions. [2020-10-28 19:17:23,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2924 transitions. [2020-10-28 19:17:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:17:23,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:23,297 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 19:17:23,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:17:23,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:23,298 INFO L82 PathProgramCache]: Analyzing trace with hash 370557941, now seen corresponding path program 1 times [2020-10-28 19:17:23,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:23,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116897836] [2020-10-28 19:17:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 19:17:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 19:17:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 19:17:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:28,927 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:28,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:17:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:29,123 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 19:17:29,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116897836] [2020-10-28 19:17:29,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:29,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272871825] [2020-10-28 19:17:29,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:29,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:29,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:29,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:29,127 INFO L87 Difference]: Start difference. First operand 1973 states and 2924 transitions. Second operand 5 states. [2020-10-28 19:17:32,222 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:17:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:33,332 INFO L93 Difference]: Finished difference Result 5228 states and 7739 transitions. [2020-10-28 19:17:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:33,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 19:17:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:33,353 INFO L225 Difference]: With dead ends: 5228 [2020-10-28 19:17:33,354 INFO L226 Difference]: Without dead ends: 3419 [2020-10-28 19:17:33,359 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 19:17:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-10-28 19:17:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3392. [2020-10-28 19:17:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3392 states. [2020-10-28 19:17:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 4963 transitions. [2020-10-28 19:17:33,583 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 4963 transitions. Word has length 156 [2020-10-28 19:17:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:33,583 INFO L481 AbstractCegarLoop]: Abstraction has 3392 states and 4963 transitions. [2020-10-28 19:17:33,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 4963 transitions. [2020-10-28 19:17:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:17:33,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:33,590 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 19:17:33,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:17:33,590 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 112833973, now seen corresponding path program 1 times [2020-10-28 19:17:33,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:33,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3066900] [2020-10-28 19:17:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:38,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:17:38,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:17:38,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 19:17:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:38,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 19:17:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:39,323 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:39,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:39,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:17:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:39,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:39,429 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 19:17:39,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3066900] [2020-10-28 19:17:39,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:39,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:39,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856112014] [2020-10-28 19:17:39,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:39,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:39,432 INFO L87 Difference]: Start difference. First operand 3392 states and 4963 transitions. Second operand 5 states. [2020-10-28 19:17:42,694 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:17:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:44,547 INFO L93 Difference]: Finished difference Result 9893 states and 14424 transitions. [2020-10-28 19:17:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:44,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:17:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:44,582 INFO L225 Difference]: With dead ends: 9893 [2020-10-28 19:17:44,582 INFO L226 Difference]: Without dead ends: 6559 [2020-10-28 19:17:44,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2020-10-28 19:17:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 6480. [2020-10-28 19:17:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6480 states. [2020-10-28 19:17:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 9397 transitions. [2020-10-28 19:17:45,070 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 9397 transitions. Word has length 157 [2020-10-28 19:17:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:45,070 INFO L481 AbstractCegarLoop]: Abstraction has 6480 states and 9397 transitions. [2020-10-28 19:17:45,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 9397 transitions. [2020-10-28 19:17:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:17:45,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:45,080 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 19:17:45,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:17:45,081 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:45,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1151623732, now seen corresponding path program 1 times [2020-10-28 19:17:45,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:45,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727195560] [2020-10-28 19:17:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:50,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:17:50,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:17:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 19:17:50,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:50,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 19:17:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:50,618 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:50,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:50,708 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 19:17:50,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727195560] [2020-10-28 19:17:50,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:50,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:50,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800187188] [2020-10-28 19:17:50,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:50,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:50,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:50,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:50,713 INFO L87 Difference]: Start difference. First operand 6480 states and 9397 transitions. Second operand 5 states. [2020-10-28 19:17:53,691 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:17:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:55,460 INFO L93 Difference]: Finished difference Result 18859 states and 27215 transitions. [2020-10-28 19:17:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:55,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 19:17:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:55,522 INFO L225 Difference]: With dead ends: 18859 [2020-10-28 19:17:55,523 INFO L226 Difference]: Without dead ends: 12470 [2020-10-28 19:17:55,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12470 states. [2020-10-28 19:17:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12470 to 12391. [2020-10-28 19:17:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12391 states. [2020-10-28 19:17:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12391 states to 12391 states and 17697 transitions. [2020-10-28 19:17:56,379 INFO L78 Accepts]: Start accepts. Automaton has 12391 states and 17697 transitions. Word has length 158 [2020-10-28 19:17:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:56,380 INFO L481 AbstractCegarLoop]: Abstraction has 12391 states and 17697 transitions. [2020-10-28 19:17:56,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 12391 states and 17697 transitions. [2020-10-28 19:17:56,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 19:17:56,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:56,402 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 19:17:56,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:17:56,403 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 624223956, now seen corresponding path program 1 times [2020-10-28 19:17:56,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:56,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143299320] [2020-10-28 19:17:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 19:18:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 19:18:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:01,947 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:02,049 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 19:18:02,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143299320] [2020-10-28 19:18:02,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:02,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:02,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556506549] [2020-10-28 19:18:02,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:02,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:02,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:02,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:02,051 INFO L87 Difference]: Start difference. First operand 12391 states and 17697 transitions. Second operand 5 states. [2020-10-28 19:18:05,640 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:18:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:07,818 INFO L93 Difference]: Finished difference Result 35155 states and 50198 transitions. [2020-10-28 19:18:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:07,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 19:18:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:07,870 INFO L225 Difference]: With dead ends: 35155 [2020-10-28 19:18:07,870 INFO L226 Difference]: Without dead ends: 23924 [2020-10-28 19:18:07,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23924 states. [2020-10-28 19:18:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23924 to 23845. [2020-10-28 19:18:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23845 states. [2020-10-28 19:18:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23845 states to 23845 states and 33626 transitions. [2020-10-28 19:18:09,760 INFO L78 Accepts]: Start accepts. Automaton has 23845 states and 33626 transitions. Word has length 159 [2020-10-28 19:18:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:09,760 INFO L481 AbstractCegarLoop]: Abstraction has 23845 states and 33626 transitions. [2020-10-28 19:18:09,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 23845 states and 33626 transitions. [2020-10-28 19:18:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:18:09,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:09,794 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 19:18:09,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:18:09,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1080341491, now seen corresponding path program 1 times [2020-10-28 19:18:09,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:09,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115856742] [2020-10-28 19:18:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:09,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:14,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:18:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:18:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:18:14,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:14,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:18:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:18:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:15,329 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:15,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:15,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:15,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:18:15,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:15,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:15,394 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 19:18:15,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115856742] [2020-10-28 19:18:15,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:15,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:15,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422524523] [2020-10-28 19:18:15,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:15,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:15,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:15,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:15,397 INFO L87 Difference]: Start difference. First operand 23845 states and 33626 transitions. Second operand 5 states. [2020-10-28 19:18:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:18,656 INFO L93 Difference]: Finished difference Result 43865 states and 61979 transitions. [2020-10-28 19:18:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:18,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 19:18:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:18,694 INFO L225 Difference]: With dead ends: 43865 [2020-10-28 19:18:18,694 INFO L226 Difference]: Without dead ends: 20463 [2020-10-28 19:18:18,740 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 19:18:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20463 states. [2020-10-28 19:18:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20463 to 20463. [2020-10-28 19:18:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20463 states. [2020-10-28 19:18:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20463 states to 20463 states and 28883 transitions. [2020-10-28 19:18:20,092 INFO L78 Accepts]: Start accepts. Automaton has 20463 states and 28883 transitions. Word has length 160 [2020-10-28 19:18:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:20,092 INFO L481 AbstractCegarLoop]: Abstraction has 20463 states and 28883 transitions. [2020-10-28 19:18:20,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 20463 states and 28883 transitions. [2020-10-28 19:18:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 19:18:20,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:20,114 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 19:18:20,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:18:20,114 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash -858458129, now seen corresponding path program 1 times [2020-10-28 19:18:20,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:20,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559239854] [2020-10-28 19:18:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:20,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:25,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:18:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:25,692 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:25,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:25,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:18:25,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:25,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:25,781 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 19:18:25,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559239854] [2020-10-28 19:18:25,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:25,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:25,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482768739] [2020-10-28 19:18:25,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:25,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:25,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:25,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:25,783 INFO L87 Difference]: Start difference. First operand 20463 states and 28883 transitions. Second operand 5 states. [2020-10-28 19:18:29,817 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:18:31,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:31,697 INFO L93 Difference]: Finished difference Result 49943 states and 70412 transitions. [2020-10-28 19:18:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:31,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 19:18:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:31,750 INFO L225 Difference]: With dead ends: 49943 [2020-10-28 19:18:31,750 INFO L226 Difference]: Without dead ends: 30394 [2020-10-28 19:18:31,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30394 states. [2020-10-28 19:18:34,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30394 to 30332. [2020-10-28 19:18:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30332 states. [2020-10-28 19:18:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30332 states to 30332 states and 42009 transitions. [2020-10-28 19:18:34,056 INFO L78 Accepts]: Start accepts. Automaton has 30332 states and 42009 transitions. Word has length 163 [2020-10-28 19:18:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:34,056 INFO L481 AbstractCegarLoop]: Abstraction has 30332 states and 42009 transitions. [2020-10-28 19:18:34,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 30332 states and 42009 transitions. [2020-10-28 19:18:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 19:18:34,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:34,082 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 19:18:34,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:18:34,082 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:34,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1711948594, now seen corresponding path program 1 times [2020-10-28 19:18:34,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:34,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799365277] [2020-10-28 19:18:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:34,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:39,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 19:18:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:18:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:39,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 19:18:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:18:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:39,588 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:18:39,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:39,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:39,642 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 19:18:39,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799365277] [2020-10-28 19:18:39,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:39,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:39,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596387467] [2020-10-28 19:18:39,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:39,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:39,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:39,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:39,644 INFO L87 Difference]: Start difference. First operand 30332 states and 42009 transitions. Second operand 5 states. [2020-10-28 19:18:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:42,969 INFO L93 Difference]: Finished difference Result 50652 states and 70099 transitions. [2020-10-28 19:18:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:42,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 19:18:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:43,001 INFO L225 Difference]: With dead ends: 50652 [2020-10-28 19:18:43,002 INFO L226 Difference]: Without dead ends: 20421 [2020-10-28 19:18:43,038 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 19:18:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20421 states. [2020-10-28 19:18:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20421 to 20421. [2020-10-28 19:18:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20421 states. [2020-10-28 19:18:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20421 states to 20421 states and 28234 transitions. [2020-10-28 19:18:44,613 INFO L78 Accepts]: Start accepts. Automaton has 20421 states and 28234 transitions. Word has length 164 [2020-10-28 19:18:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:44,614 INFO L481 AbstractCegarLoop]: Abstraction has 20421 states and 28234 transitions. [2020-10-28 19:18:44,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 20421 states and 28234 transitions. [2020-10-28 19:18:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 19:18:44,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:44,628 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] [2020-10-28 19:18:44,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:18:44,628 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:44,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:44,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2075400526, now seen corresponding path program 1 times [2020-10-28 19:18:44,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:44,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486946246] [2020-10-28 19:18:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:49,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 19:18:49,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:18:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 19:18:49,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:49,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 19:18:49,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:18:50,214 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:50,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:50,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:50,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:18:50,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:50,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:50,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:50,291 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 19:18:50,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486946246] [2020-10-28 19:18:50,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:50,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:50,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352827887] [2020-10-28 19:18:50,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:50,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:50,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:50,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:50,294 INFO L87 Difference]: Start difference. First operand 20421 states and 28234 transitions. Second operand 5 states. [2020-10-28 19:18:50,810 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 19:18:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:56,058 INFO L93 Difference]: Finished difference Result 36164 states and 49959 transitions. [2020-10-28 19:18:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:18:56,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 19:18:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:56,084 INFO L225 Difference]: With dead ends: 36164 [2020-10-28 19:18:56,084 INFO L226 Difference]: Without dead ends: 20455 [2020-10-28 19:18:56,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20455 states. [2020-10-28 19:18:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20455 to 20398. [2020-10-28 19:18:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20398 states. [2020-10-28 19:18:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20398 states to 20398 states and 28092 transitions. [2020-10-28 19:18:57,498 INFO L78 Accepts]: Start accepts. Automaton has 20398 states and 28092 transitions. Word has length 167 [2020-10-28 19:18:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:57,499 INFO L481 AbstractCegarLoop]: Abstraction has 20398 states and 28092 transitions. [2020-10-28 19:18:57,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20398 states and 28092 transitions. [2020-10-28 19:18:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 19:18:57,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:57,516 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 19:18:57,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:18:57,517 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1266662463, now seen corresponding path program 1 times [2020-10-28 19:18:57,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:57,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264552465] [2020-10-28 19:18:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:02,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:02,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 19:19:02,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:19:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:19:02,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:02,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 19:19:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:03,023 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:19:03,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:03,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:03,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:03,083 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 19:19:03,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264552465] [2020-10-28 19:19:03,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:03,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:03,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026864581] [2020-10-28 19:19:03,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:03,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:03,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:03,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:03,085 INFO L87 Difference]: Start difference. First operand 20398 states and 28092 transitions. Second operand 5 states. [2020-10-28 19:19:03,625 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 19:19:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:08,776 INFO L93 Difference]: Finished difference Result 35533 states and 48981 transitions. [2020-10-28 19:19:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:19:08,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 19:19:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:08,803 INFO L225 Difference]: With dead ends: 35533 [2020-10-28 19:19:08,803 INFO L226 Difference]: Without dead ends: 20429 [2020-10-28 19:19:08,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20429 states. [2020-10-28 19:19:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20429 to 20398. [2020-10-28 19:19:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20398 states. [2020-10-28 19:19:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20398 states to 20398 states and 27962 transitions. [2020-10-28 19:19:10,241 INFO L78 Accepts]: Start accepts. Automaton has 20398 states and 27962 transitions. Word has length 168 [2020-10-28 19:19:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:10,242 INFO L481 AbstractCegarLoop]: Abstraction has 20398 states and 27962 transitions. [2020-10-28 19:19:10,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 20398 states and 27962 transitions. [2020-10-28 19:19:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 19:19:10,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:10,252 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 19:19:10,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:19:10,252 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:10,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1390316708, now seen corresponding path program 1 times [2020-10-28 19:19:10,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:10,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962560369] [2020-10-28 19:19:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:15,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:15,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 19:19:15,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:19:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:15,776 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:19:15,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:15,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:15,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:15,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:15,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:19:15,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:15,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:15,818 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 19:19:15,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962560369] [2020-10-28 19:19:15,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:15,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:15,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009462876] [2020-10-28 19:19:15,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:15,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:15,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:15,820 INFO L87 Difference]: Start difference. First operand 20398 states and 27962 transitions. Second operand 5 states. [2020-10-28 19:19:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:19,136 INFO L93 Difference]: Finished difference Result 38342 states and 52654 transitions. [2020-10-28 19:19:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:19,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 19:19:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:19,162 INFO L225 Difference]: With dead ends: 38342 [2020-10-28 19:19:19,162 INFO L226 Difference]: Without dead ends: 18273 [2020-10-28 19:19:19,178 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 19:19:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18273 states. [2020-10-28 19:19:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18273 to 18273. [2020-10-28 19:19:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18273 states. [2020-10-28 19:19:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18273 states to 18273 states and 25048 transitions. [2020-10-28 19:19:20,252 INFO L78 Accepts]: Start accepts. Automaton has 18273 states and 25048 transitions. Word has length 169 [2020-10-28 19:19:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:20,252 INFO L481 AbstractCegarLoop]: Abstraction has 18273 states and 25048 transitions. [2020-10-28 19:19:20,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 18273 states and 25048 transitions. [2020-10-28 19:19:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 19:19:20,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:20,263 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 19:19:20,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:19:20,264 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:20,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1281759651, now seen corresponding path program 1 times [2020-10-28 19:19:20,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:20,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617975610] [2020-10-28 19:19:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:25,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:19:25,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 19:19:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:25,774 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:19:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:25,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:25,818 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 19:19:25,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617975610] [2020-10-28 19:19:25,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:25,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:25,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568215134] [2020-10-28 19:19:25,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:25,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:25,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:25,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:25,820 INFO L87 Difference]: Start difference. First operand 18273 states and 25048 transitions. Second operand 5 states. [2020-10-28 19:19:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:30,966 INFO L93 Difference]: Finished difference Result 38369 states and 54783 transitions. [2020-10-28 19:19:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:30,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 19:19:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:30,997 INFO L225 Difference]: With dead ends: 38369 [2020-10-28 19:19:30,997 INFO L226 Difference]: Without dead ends: 27413 [2020-10-28 19:19:31,012 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 19:19:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27413 states. [2020-10-28 19:19:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27413 to 18273. [2020-10-28 19:19:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18273 states. [2020-10-28 19:19:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18273 states to 18273 states and 24986 transitions. [2020-10-28 19:19:32,346 INFO L78 Accepts]: Start accepts. Automaton has 18273 states and 24986 transitions. Word has length 171 [2020-10-28 19:19:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:32,346 INFO L481 AbstractCegarLoop]: Abstraction has 18273 states and 24986 transitions. [2020-10-28 19:19:32,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18273 states and 24986 transitions. [2020-10-28 19:19:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 19:19:32,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:32,358 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 19:19:32,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:19:32,358 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:32,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:32,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1942452122, now seen corresponding path program 1 times [2020-10-28 19:19:32,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:32,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301324462] [2020-10-28 19:19:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:19:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 19:19:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:19:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:19:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:37,921 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:19:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:37,966 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 19:19:37,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301324462] [2020-10-28 19:19:37,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:37,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:37,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261634649] [2020-10-28 19:19:37,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:37,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:37,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:37,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:37,968 INFO L87 Difference]: Start difference. First operand 18273 states and 24986 transitions. Second operand 5 states. [2020-10-28 19:19:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:41,029 INFO L93 Difference]: Finished difference Result 30415 states and 41563 transitions. [2020-10-28 19:19:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:41,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 19:19:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:41,046 INFO L225 Difference]: With dead ends: 30415 [2020-10-28 19:19:41,047 INFO L226 Difference]: Without dead ends: 15818 [2020-10-28 19:19:41,061 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 19:19:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15818 states. [2020-10-28 19:19:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15818 to 15818. [2020-10-28 19:19:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15818 states. [2020-10-28 19:19:42,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15818 states to 15818 states and 21602 transitions. [2020-10-28 19:19:42,141 INFO L78 Accepts]: Start accepts. Automaton has 15818 states and 21602 transitions. Word has length 171 [2020-10-28 19:19:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:42,141 INFO L481 AbstractCegarLoop]: Abstraction has 15818 states and 21602 transitions. [2020-10-28 19:19:42,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 15818 states and 21602 transitions. [2020-10-28 19:19:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 19:19:42,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:42,149 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 19:19:42,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:19:42,149 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:42,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:42,149 INFO L82 PathProgramCache]: Analyzing trace with hash -478856407, now seen corresponding path program 1 times [2020-10-28 19:19:42,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:42,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35104694] [2020-10-28 19:19:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 19:19:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:19:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 19:19:47,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:47,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 19:19:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:47,709 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:19:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:47,768 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 19:19:47,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35104694] [2020-10-28 19:19:47,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:47,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:47,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110406078] [2020-10-28 19:19:47,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:47,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:47,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:47,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:47,770 INFO L87 Difference]: Start difference. First operand 15818 states and 21602 transitions. Second operand 5 states. [2020-10-28 19:19:48,256 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 19:19:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:52,453 INFO L93 Difference]: Finished difference Result 26065 states and 35639 transitions. [2020-10-28 19:19:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:52,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-28 19:19:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:52,471 INFO L225 Difference]: With dead ends: 26065 [2020-10-28 19:19:52,471 INFO L226 Difference]: Without dead ends: 15891 [2020-10-28 19:19:52,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:19:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15891 states. [2020-10-28 19:19:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15891 to 15818. [2020-10-28 19:19:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15818 states. [2020-10-28 19:19:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15818 states to 15818 states and 21507 transitions. [2020-10-28 19:19:53,647 INFO L78 Accepts]: Start accepts. Automaton has 15818 states and 21507 transitions. Word has length 172 [2020-10-28 19:19:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:53,648 INFO L481 AbstractCegarLoop]: Abstraction has 15818 states and 21507 transitions. [2020-10-28 19:19:53,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15818 states and 21507 transitions. [2020-10-28 19:19:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 19:19:53,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:53,656 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] [2020-10-28 19:19:53,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:19:53,656 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:53,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1362663151, now seen corresponding path program 1 times [2020-10-28 19:19:53,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:53,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852723404] [2020-10-28 19:19:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:55,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:58,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:58,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 19:19:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:19:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 19:19:58,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:58,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 19:19:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 19:19:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:59,186 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:19:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:59,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:59,238 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 19:19:59,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852723404] [2020-10-28 19:19:59,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:59,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:59,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360644831] [2020-10-28 19:19:59,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:59,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:59,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:59,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:59,240 INFO L87 Difference]: Start difference. First operand 15818 states and 21507 transitions. Second operand 5 states. [2020-10-28 19:19:59,729 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:20:03,111 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 19:20:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:06,220 INFO L93 Difference]: Finished difference Result 44613 states and 62985 transitions. [2020-10-28 19:20:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:20:06,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 19:20:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:06,256 INFO L225 Difference]: With dead ends: 44613 [2020-10-28 19:20:06,256 INFO L226 Difference]: Without dead ends: 35878 [2020-10-28 19:20:06,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35878 states. [2020-10-28 19:20:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35878 to 35872. [2020-10-28 19:20:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35872 states. [2020-10-28 19:20:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35872 states to 35872 states and 49822 transitions. [2020-10-28 19:20:09,098 INFO L78 Accepts]: Start accepts. Automaton has 35872 states and 49822 transitions. Word has length 173 [2020-10-28 19:20:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:09,098 INFO L481 AbstractCegarLoop]: Abstraction has 35872 states and 49822 transitions. [2020-10-28 19:20:09,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 35872 states and 49822 transitions. [2020-10-28 19:20:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 19:20:09,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:09,113 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] [2020-10-28 19:20:09,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:20:09,113 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:09,113 INFO L82 PathProgramCache]: Analyzing trace with hash 394124396, now seen corresponding path program 1 times [2020-10-28 19:20:09,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:09,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340365866] [2020-10-28 19:20:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:14,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:20:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:14,676 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:20:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:14,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:14,743 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 19:20:14,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340365866] [2020-10-28 19:20:14,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:14,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:14,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619715565] [2020-10-28 19:20:14,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:14,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:14,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:14,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:14,746 INFO L87 Difference]: Start difference. First operand 35872 states and 49822 transitions. Second operand 5 states. [2020-10-28 19:20:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:22,772 INFO L93 Difference]: Finished difference Result 76727 states and 111444 transitions. [2020-10-28 19:20:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:20:22,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 19:20:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:22,842 INFO L225 Difference]: With dead ends: 76727 [2020-10-28 19:20:22,843 INFO L226 Difference]: Without dead ends: 54818 [2020-10-28 19:20:22,865 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 19:20:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54818 states.