/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=SHALLOWEST --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_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:26:25,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:26:25,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:26:25,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:26:25,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:26:25,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:26:25,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:26:25,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:26:25,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:26:25,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:26:25,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:26:25,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:26:25,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:26:25,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:26:25,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:26:25,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:26:25,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:26:25,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:26:25,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:26:25,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:26:25,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:26:25,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:26:25,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:26:25,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:26:25,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:26:25,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:26:25,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:26:25,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:26:25,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:26:25,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:26:25,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:26:25,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:26:25,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:26:25,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:26:25,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:26:25,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:26:25,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:26:25,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:26:25,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:26:25,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:26:25,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:26:25,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:26:25,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:26:25,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:26:25,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:26:25,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:26:25,400 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:26:25,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:26:25,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:26:25,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:26:25,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:26:25,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:26:25,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:26:25,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:26:25,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:26:25,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:26:25,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:26:25,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:26:25,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:26:25,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:26:25,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:26:25,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:26:25,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:26:25,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:26:25,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:26:25,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:26:25,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:26:25,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:26:25,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:26:25,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:26:25,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:26:25,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:26:25,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:26:25,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:26:25,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:26:25,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:26:25,856 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:26:25,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:26:25,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/746a599ef/b0afe8c3334e455094a6fdecee0cc9a8/FLAG1541c64e7 [2020-10-27 05:26:26,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:26:26,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:26:26,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/746a599ef/b0afe8c3334e455094a6fdecee0cc9a8/FLAG1541c64e7 [2020-10-27 05:26:26,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/746a599ef/b0afe8c3334e455094a6fdecee0cc9a8 [2020-10-27 05:26:26,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:26:26,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:26:26,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:26:26,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:26:26,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:26:26,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:26:26" (1/1) ... [2020-10-27 05:26:26,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9e77e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:26, skipping insertion in model container [2020-10-27 05:26:26,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:26:26" (1/1) ... [2020-10-27 05:26:26,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:26:26,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:26:27,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:26:27,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:26:27,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:26:27,690 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:26:27,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27 WrapperNode [2020-10-27 05:26:27,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:26:27,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:26:27,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:26:27,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:26:27,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... [2020-10-27 05:26:27,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:26:27,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:26:27,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:26:27,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:26:27,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:26:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:26:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:26:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:26:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:26:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:26:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:26:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:26:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:26:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:26:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:26:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:26:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:26:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:26:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:26:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:26:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:26:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:26:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:26:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:26:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:26:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:26:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:26:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:26:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:26:29,434 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:26:29,434 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:26:29,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:26:29 BoogieIcfgContainer [2020-10-27 05:26:29,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:26:29,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:26:29,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:26:29,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:26:29,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:26:26" (1/3) ... [2020-10-27 05:26:29,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a865cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:26:29, skipping insertion in model container [2020-10-27 05:26:29,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:27" (2/3) ... [2020-10-27 05:26:29,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a865cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:26:29, skipping insertion in model container [2020-10-27 05:26:29,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:26:29" (3/3) ... [2020-10-27 05:26:29,447 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:26:29,460 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:26:29,467 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:26:29,481 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:26:29,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:26:29,513 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:26:29,513 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:26:29,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:26:29,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:26:29,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:26:29,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:26:29,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:26:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 05:26:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 05:26:29,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:29,563 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] [2020-10-27 05:26:29,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash -470747328, now seen corresponding path program 1 times [2020-10-27 05:26:29,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:29,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280418154] [2020-10-27 05:26:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:31,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:34,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:34,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 05:26:34,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:26:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 05:26:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:26:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:26:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:26:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:26:35,549 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:26:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:35,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:26:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:26:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:26:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:35,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280418154] [2020-10-27 05:26:35,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:35,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:26:35,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051591205] [2020-10-27 05:26:35,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:26:35,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:26:35,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:26:35,691 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 5 states. [2020-10-27 05:26:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:37,573 INFO L93 Difference]: Finished difference Result 623 states and 1008 transitions. [2020-10-27 05:26:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:26:37,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 05:26:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:37,591 INFO L225 Difference]: With dead ends: 623 [2020-10-27 05:26:37,591 INFO L226 Difference]: Without dead ends: 328 [2020-10-27 05:26:37,598 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 [2020-10-27 05:26:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-27 05:26:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2020-10-27 05:26:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-27 05:26:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 496 transitions. [2020-10-27 05:26:37,677 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 496 transitions. Word has length 124 [2020-10-27 05:26:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:37,677 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 496 transitions. [2020-10-27 05:26:37,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:26:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 496 transitions. [2020-10-27 05:26:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 05:26:37,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:37,686 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] [2020-10-27 05:26:37,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:26:37,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:37,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1375362663, now seen corresponding path program 1 times [2020-10-27 05:26:37,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:37,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463988764] [2020-10-27 05:26:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:38,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:38,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:38,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 05:26:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:26:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 05:26:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:26:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:26:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:43,206 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:26:43,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:43,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:43,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:43,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 05:26:43,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:43,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463988764] [2020-10-27 05:26:43,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:43,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:26:43,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113127496] [2020-10-27 05:26:43,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:26:43,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:26:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:26:43,335 INFO L87 Difference]: Start difference. First operand 328 states and 496 transitions. Second operand 6 states. [2020-10-27 05:26:43,759 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:26:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:45,558 INFO L93 Difference]: Finished difference Result 599 states and 928 transitions. [2020-10-27 05:26:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:26:45,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-27 05:26:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:45,569 INFO L225 Difference]: With dead ends: 599 [2020-10-27 05:26:45,569 INFO L226 Difference]: Without dead ends: 328 [2020-10-27 05:26:45,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:26:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-27 05:26:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2020-10-27 05:26:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-27 05:26:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 492 transitions. [2020-10-27 05:26:45,630 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 492 transitions. Word has length 163 [2020-10-27 05:26:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:45,631 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 492 transitions. [2020-10-27 05:26:45,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:26:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 492 transitions. [2020-10-27 05:26:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 05:26:45,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:45,635 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] [2020-10-27 05:26:45,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:26:45,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:45,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1684625169, now seen corresponding path program 1 times [2020-10-27 05:26:45,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:45,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119292773] [2020-10-27 05:26:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:46,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:50,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:50,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 05:26:50,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:26:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:26:50,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:26:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:26:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:51,313 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:26:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:51,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:51,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:26:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:51,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119292773] [2020-10-27 05:26:51,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:51,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:26:51,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93979478] [2020-10-27 05:26:51,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:26:51,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:51,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:26:51,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:26:51,476 INFO L87 Difference]: Start difference. First operand 328 states and 492 transitions. Second operand 11 states. [2020-10-27 05:26:52,268 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 199 [2020-10-27 05:26:58,313 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-10-27 05:26:58,719 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:26:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:58,728 INFO L93 Difference]: Finished difference Result 2029 states and 3187 transitions. [2020-10-27 05:26:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 05:26:58,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 163 [2020-10-27 05:26:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:58,742 INFO L225 Difference]: With dead ends: 2029 [2020-10-27 05:26:58,742 INFO L226 Difference]: Without dead ends: 1838 [2020-10-27 05:26:58,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 05:26:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-10-27 05:26:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 401. [2020-10-27 05:26:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-27 05:26:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 607 transitions. [2020-10-27 05:26:58,821 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 607 transitions. Word has length 163 [2020-10-27 05:26:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:58,822 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 607 transitions. [2020-10-27 05:26:58,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:26:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 607 transitions. [2020-10-27 05:26:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:26:58,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:58,826 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] [2020-10-27 05:26:58,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:26:58,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:58,827 INFO L82 PathProgramCache]: Analyzing trace with hash 800218245, now seen corresponding path program 1 times [2020-10-27 05:26:58,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:58,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824080653] [2020-10-27 05:26:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:59,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:03,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:03,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:27:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:27:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:27:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:27:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:27:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:27:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:04,444 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:27:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:04,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:04,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:27:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:04,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824080653] [2020-10-27 05:27:04,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:04,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:27:04,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287848163] [2020-10-27 05:27:04,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:27:04,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:04,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:27:04,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:27:04,541 INFO L87 Difference]: Start difference. First operand 401 states and 607 transitions. Second operand 9 states. [2020-10-27 05:27:04,935 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:27:11,679 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:27:12,089 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:27:12,492 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:27:12,893 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:27:13,239 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:27:13,744 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:27:14,163 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:27:14,581 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:27:14,954 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:27:15,318 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:15,342 INFO L93 Difference]: Finished difference Result 3466 states and 5442 transitions. [2020-10-27 05:27:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:27:15,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-27 05:27:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:15,365 INFO L225 Difference]: With dead ends: 3466 [2020-10-27 05:27:15,366 INFO L226 Difference]: Without dead ends: 3237 [2020-10-27 05:27:15,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:27:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2020-10-27 05:27:15,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 731. [2020-10-27 05:27:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-27 05:27:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1122 transitions. [2020-10-27 05:27:15,486 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1122 transitions. Word has length 164 [2020-10-27 05:27:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:15,486 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1122 transitions. [2020-10-27 05:27:15,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:27:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1122 transitions. [2020-10-27 05:27:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:27:15,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:15,490 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] [2020-10-27 05:27:15,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:27:15,491 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:15,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:15,491 INFO L82 PathProgramCache]: Analyzing trace with hash -799668183, now seen corresponding path program 1 times [2020-10-27 05:27:15,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:15,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266738276] [2020-10-27 05:27:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:20,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:27:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:27:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 05:27:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:27:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:27:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:27:20,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:27:21,012 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:27:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:27:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:21,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266738276] [2020-10-27 05:27:21,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:21,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:27:21,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984444679] [2020-10-27 05:27:21,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:27:21,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:21,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:27:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:27:21,100 INFO L87 Difference]: Start difference. First operand 731 states and 1122 transitions. Second operand 9 states. [2020-10-27 05:27:21,634 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:27:27,575 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:27:27,982 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:27:28,348 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:27:28,697 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:27:29,123 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:27:29,543 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:27:29,940 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:27:30,337 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:27:30,706 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:30,770 INFO L93 Difference]: Finished difference Result 4660 states and 7256 transitions. [2020-10-27 05:27:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:27:30,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-27 05:27:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:30,793 INFO L225 Difference]: With dead ends: 4660 [2020-10-27 05:27:30,793 INFO L226 Difference]: Without dead ends: 4288 [2020-10-27 05:27:30,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-10-27 05:27:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2020-10-27 05:27:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 1475. [2020-10-27 05:27:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1475 states. [2020-10-27 05:27:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2281 transitions. [2020-10-27 05:27:31,027 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2281 transitions. Word has length 166 [2020-10-27 05:27:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:31,027 INFO L481 AbstractCegarLoop]: Abstraction has 1475 states and 2281 transitions. [2020-10-27 05:27:31,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:27:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2281 transitions. [2020-10-27 05:27:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:27:31,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:31,033 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] [2020-10-27 05:27:31,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:27:31,033 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash 530195427, now seen corresponding path program 1 times [2020-10-27 05:27:31,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:31,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357963107] [2020-10-27 05:27:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:31,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:27:36,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:27:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:27:36,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:27:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:27:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:27:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:36,535 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:27:36,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:36,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:27:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:27:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:27:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:36,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357963107] [2020-10-27 05:27:36,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:36,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:27:36,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041519333] [2020-10-27 05:27:36,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:27:36,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:36,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:27:36,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:27:36,615 INFO L87 Difference]: Start difference. First operand 1475 states and 2281 transitions. Second operand 9 states. [2020-10-27 05:27:37,075 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 05:27:41,369 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 05:27:41,759 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:27:42,120 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 05:27:42,566 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:27:42,985 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:27:43,378 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:27:43,753 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:27:44,115 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 05:27:44,561 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:27:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:44,601 INFO L93 Difference]: Finished difference Result 5701 states and 8859 transitions. [2020-10-27 05:27:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:27:44,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-27 05:27:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:44,625 INFO L225 Difference]: With dead ends: 5701 [2020-10-27 05:27:44,625 INFO L226 Difference]: Without dead ends: 5196 [2020-10-27 05:27:44,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-10-27 05:27:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2020-10-27 05:27:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 2215. [2020-10-27 05:27:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-10-27 05:27:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3435 transitions. [2020-10-27 05:27:45,010 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3435 transitions. Word has length 166 [2020-10-27 05:27:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:45,011 INFO L481 AbstractCegarLoop]: Abstraction has 2215 states and 3435 transitions. [2020-10-27 05:27:45,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:27:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3435 transitions. [2020-10-27 05:27:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:27:45,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:45,018 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] [2020-10-27 05:27:45,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:27:45,018 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2098353367, now seen corresponding path program 1 times [2020-10-27 05:27:45,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:45,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635991605] [2020-10-27 05:27:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:50,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:50,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:27:50,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:27:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:27:50,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:27:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:27:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 05:27:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:50,455 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:27:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:50,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:27:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:27:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:50,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635991605] [2020-10-27 05:27:50,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:50,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:27:50,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371924439] [2020-10-27 05:27:50,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:27:50,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:50,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:27:50,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:27:50,526 INFO L87 Difference]: Start difference. First operand 2215 states and 3435 transitions. Second operand 7 states. [2020-10-27 05:27:50,925 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 05:27:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:53,090 INFO L93 Difference]: Finished difference Result 4106 states and 6366 transitions. [2020-10-27 05:27:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:27:53,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:27:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:53,099 INFO L225 Difference]: With dead ends: 4106 [2020-10-27 05:27:53,099 INFO L226 Difference]: Without dead ends: 2239 [2020-10-27 05:27:53,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:27:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2020-10-27 05:27:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2215. [2020-10-27 05:27:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-10-27 05:27:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3419 transitions. [2020-10-27 05:27:53,454 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3419 transitions. Word has length 166 [2020-10-27 05:27:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:53,454 INFO L481 AbstractCegarLoop]: Abstraction has 2215 states and 3419 transitions. [2020-10-27 05:27:53,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:27:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3419 transitions. [2020-10-27 05:27:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:27:53,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:53,461 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] [2020-10-27 05:27:53,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:27:53,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash -611129315, now seen corresponding path program 1 times [2020-10-27 05:27:53,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:53,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37269452] [2020-10-27 05:27:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:58,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 05:27:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:58,963 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:27:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:58,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:58,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:58,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:27:58,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:27:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:27:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:27:59,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37269452] [2020-10-27 05:27:59,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:27:59,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:27:59,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893793979] [2020-10-27 05:27:59,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:27:59,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:27:59,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:27:59,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:27:59,082 INFO L87 Difference]: Start difference. First operand 2215 states and 3419 transitions. Second operand 7 states. [2020-10-27 05:27:59,452 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:01,630 INFO L93 Difference]: Finished difference Result 4426 states and 6846 transitions. [2020-10-27 05:28:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:01,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:28:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:01,639 INFO L225 Difference]: With dead ends: 4426 [2020-10-27 05:28:01,639 INFO L226 Difference]: Without dead ends: 2463 [2020-10-27 05:28:01,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:28:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2020-10-27 05:28:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2199. [2020-10-27 05:28:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2020-10-27 05:28:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3379 transitions. [2020-10-27 05:28:01,992 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3379 transitions. Word has length 166 [2020-10-27 05:28:01,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:01,992 INFO L481 AbstractCegarLoop]: Abstraction has 2199 states and 3379 transitions. [2020-10-27 05:28:01,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3379 transitions. [2020-10-27 05:28:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:28:01,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:01,999 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] [2020-10-27 05:28:01,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:28:02,000 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:02,000 INFO L82 PathProgramCache]: Analyzing trace with hash -388721425, now seen corresponding path program 1 times [2020-10-27 05:28:02,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:02,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977406218] [2020-10-27 05:28:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:07,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:07,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:28:07,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:28:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:28:07,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 05:28:07,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:07,516 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:28:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:07,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:07,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:07,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:07,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:28:07,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:07,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:07,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977406218] [2020-10-27 05:28:07,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:07,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:07,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831468604] [2020-10-27 05:28:07,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:07,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:07,635 INFO L87 Difference]: Start difference. First operand 2199 states and 3379 transitions. Second operand 7 states. [2020-10-27 05:28:08,020 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:10,314 INFO L93 Difference]: Finished difference Result 5274 states and 8174 transitions. [2020-10-27 05:28:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:28:10,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:28:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:10,325 INFO L225 Difference]: With dead ends: 5274 [2020-10-27 05:28:10,325 INFO L226 Difference]: Without dead ends: 3157 [2020-10-27 05:28:10,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:28:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2020-10-27 05:28:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2173. [2020-10-27 05:28:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-10-27 05:28:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3332 transitions. [2020-10-27 05:28:10,634 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3332 transitions. Word has length 166 [2020-10-27 05:28:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:10,635 INFO L481 AbstractCegarLoop]: Abstraction has 2173 states and 3332 transitions. [2020-10-27 05:28:10,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3332 transitions. [2020-10-27 05:28:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:28:10,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:10,642 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] [2020-10-27 05:28:10,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:28:10,642 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:10,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1797537381, now seen corresponding path program 1 times [2020-10-27 05:28:10,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:10,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209733337] [2020-10-27 05:28:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:10,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:15,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:15,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:28:15,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:28:15,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:28:15,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:28:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:28:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:16,193 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:28:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:16,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:16,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:28:16,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:16,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209733337] [2020-10-27 05:28:16,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:16,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:28:16,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269492733] [2020-10-27 05:28:16,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:28:16,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:16,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:28:16,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:28:16,263 INFO L87 Difference]: Start difference. First operand 2173 states and 3332 transitions. Second operand 7 states. [2020-10-27 05:28:16,656 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:19,717 INFO L93 Difference]: Finished difference Result 5236 states and 8137 transitions. [2020-10-27 05:28:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:28:19,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:28:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:19,736 INFO L225 Difference]: With dead ends: 5236 [2020-10-27 05:28:19,736 INFO L226 Difference]: Without dead ends: 3391 [2020-10-27 05:28:19,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:28:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2020-10-27 05:28:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 2143. [2020-10-27 05:28:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2143 states. [2020-10-27 05:28:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 3284 transitions. [2020-10-27 05:28:20,079 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 3284 transitions. Word has length 166 [2020-10-27 05:28:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:20,080 INFO L481 AbstractCegarLoop]: Abstraction has 2143 states and 3284 transitions. [2020-10-27 05:28:20,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:28:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 3284 transitions. [2020-10-27 05:28:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:28:20,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:20,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:28:20,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:28:20,086 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:20,087 INFO L82 PathProgramCache]: Analyzing trace with hash 950830447, now seen corresponding path program 1 times [2020-10-27 05:28:20,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:20,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119202664] [2020-10-27 05:28:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:20,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:25,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:28:25,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:28:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:28:25,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:28:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:28:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:28:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:25,420 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-27 05:28:25,815 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:28:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:25,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:25,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:25,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:28:25,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:28:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:28:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:25,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119202664] [2020-10-27 05:28:25,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:25,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:28:25,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511892696] [2020-10-27 05:28:25,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:28:25,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:25,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:28:25,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:28:25,886 INFO L87 Difference]: Start difference. First operand 2143 states and 3284 transitions. Second operand 10 states. [2020-10-27 05:28:26,271 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:31,529 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:28:31,970 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 05:28:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:32,022 INFO L93 Difference]: Finished difference Result 13255 states and 20736 transitions. [2020-10-27 05:28:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:28:32,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-27 05:28:32,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:32,047 INFO L225 Difference]: With dead ends: 13255 [2020-10-27 05:28:32,047 INFO L226 Difference]: Without dead ends: 12788 [2020-10-27 05:28:32,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:28:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12788 states. [2020-10-27 05:28:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12788 to 2159. [2020-10-27 05:28:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2159 states. [2020-10-27 05:28:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3308 transitions. [2020-10-27 05:28:32,570 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3308 transitions. Word has length 167 [2020-10-27 05:28:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:32,571 INFO L481 AbstractCegarLoop]: Abstraction has 2159 states and 3308 transitions. [2020-10-27 05:28:32,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:28:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3308 transitions. [2020-10-27 05:28:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:28:32,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:32,577 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] [2020-10-27 05:28:32,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:28:32,577 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:32,578 INFO L82 PathProgramCache]: Analyzing trace with hash 637630087, now seen corresponding path program 1 times [2020-10-27 05:28:32,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:32,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224746019] [2020-10-27 05:28:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:32,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:37,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:37,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:28:37,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:28:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:28:37,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 05:28:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 05:28:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:37,988 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:28:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:38,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:38,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:38,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:28:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:28:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:28:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:38,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224746019] [2020-10-27 05:28:38,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:38,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:28:38,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459282514] [2020-10-27 05:28:38,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:28:38,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:28:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:28:38,042 INFO L87 Difference]: Start difference. First operand 2159 states and 3308 transitions. Second operand 4 states. [2020-10-27 05:28:38,417 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:28:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:40,552 INFO L93 Difference]: Finished difference Result 5603 states and 8662 transitions. [2020-10-27 05:28:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:28:40,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-27 05:28:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:40,559 INFO L225 Difference]: With dead ends: 5603 [2020-10-27 05:28:40,560 INFO L226 Difference]: Without dead ends: 3514 [2020-10-27 05:28:40,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:28:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2020-10-27 05:28:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3511. [2020-10-27 05:28:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3511 states. [2020-10-27 05:28:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5413 transitions. [2020-10-27 05:28:41,227 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5413 transitions. Word has length 168 [2020-10-27 05:28:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:41,227 INFO L481 AbstractCegarLoop]: Abstraction has 3511 states and 5413 transitions. [2020-10-27 05:28:41,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:28:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5413 transitions. [2020-10-27 05:28:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 05:28:41,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:41,235 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] [2020-10-27 05:28:41,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:28:41,235 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash 321962321, now seen corresponding path program 1 times [2020-10-27 05:28:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:41,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125443886] [2020-10-27 05:28:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:42,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:46,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:46,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 05:28:46,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:28:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 05:28:46,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:28:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:46,731 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:28:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:46,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:46,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:46,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:28:46,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:46,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125443886] [2020-10-27 05:28:46,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:46,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:28:46,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983648615] [2020-10-27 05:28:46,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:28:46,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:46,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:28:46,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:28:46,792 INFO L87 Difference]: Start difference. First operand 3511 states and 5413 transitions. Second operand 6 states. [2020-10-27 05:28:47,187 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:28:50,955 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:28:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:28:51,014 INFO L93 Difference]: Finished difference Result 9283 states and 14372 transitions. [2020-10-27 05:28:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:28:51,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-27 05:28:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:28:51,029 INFO L225 Difference]: With dead ends: 9283 [2020-10-27 05:28:51,029 INFO L226 Difference]: Without dead ends: 5838 [2020-10-27 05:28:51,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:28:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2020-10-27 05:28:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5835. [2020-10-27 05:28:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-10-27 05:28:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 9004 transitions. [2020-10-27 05:28:52,206 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 9004 transitions. Word has length 170 [2020-10-27 05:28:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:28:52,207 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 9004 transitions. [2020-10-27 05:28:52,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:28:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 9004 transitions. [2020-10-27 05:28:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 05:28:52,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:52,215 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] [2020-10-27 05:28:52,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:28:52,215 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:52,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1487813450, now seen corresponding path program 1 times [2020-10-27 05:28:52,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:52,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401428751] [2020-10-27 05:28:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:28:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 05:28:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:57,886 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:28:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:57,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:28:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:28:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:28:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401428751] [2020-10-27 05:28:57,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:28:57,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:28:57,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509672720] [2020-10-27 05:28:57,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:28:57,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:28:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:28:57,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:28:57,972 INFO L87 Difference]: Start difference. First operand 5835 states and 9004 transitions. Second operand 13 states. [2020-10-27 05:28:58,932 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 205 [2020-10-27 05:28:59,328 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-27 05:29:01,250 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-27 05:29:01,405 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-27 05:29:02,179 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-27 05:29:09,786 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-27 05:29:09,988 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-27 05:29:10,280 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-27 05:29:33,810 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 203 [2020-10-27 05:29:34,586 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:29:35,666 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-27 05:29:36,332 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:29:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:36,742 INFO L93 Difference]: Finished difference Result 47401 states and 73453 transitions. [2020-10-27 05:29:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 05:29:36,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 170 [2020-10-27 05:29:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:36,893 INFO L225 Difference]: With dead ends: 47401 [2020-10-27 05:29:36,893 INFO L226 Difference]: Without dead ends: 44003 [2020-10-27 05:29:36,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=846, Invalid=3710, Unknown=0, NotChecked=0, Total=4556 [2020-10-27 05:29:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44003 states. [2020-10-27 05:29:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44003 to 6423. [2020-10-27 05:29:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6423 states. [2020-10-27 05:29:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9875 transitions. [2020-10-27 05:29:38,833 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9875 transitions. Word has length 170 [2020-10-27 05:29:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:38,833 INFO L481 AbstractCegarLoop]: Abstraction has 6423 states and 9875 transitions. [2020-10-27 05:29:38,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:29:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9875 transitions. [2020-10-27 05:29:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 05:29:38,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:38,843 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] [2020-10-27 05:29:38,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:29:38,843 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:38,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1282845851, now seen corresponding path program 1 times [2020-10-27 05:29:38,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:38,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949132688] [2020-10-27 05:29:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:38,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:43,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 05:29:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:44,412 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:29:44,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:44,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:44,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:44,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:44,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:29:44,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:44,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949132688] [2020-10-27 05:29:44,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:44,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:29:44,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644197213] [2020-10-27 05:29:44,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:29:44,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:29:44,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:29:44,511 INFO L87 Difference]: Start difference. First operand 6423 states and 9875 transitions. Second operand 11 states. [2020-10-27 05:29:44,933 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 05:30:00,770 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 05:30:01,144 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 05:30:01,571 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 05:30:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:02,903 INFO L93 Difference]: Finished difference Result 37809 states and 58620 transitions. [2020-10-27 05:30:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 05:30:02,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-10-27 05:30:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:02,948 INFO L225 Difference]: With dead ends: 37809 [2020-10-27 05:30:02,948 INFO L226 Difference]: Without dead ends: 33682 [2020-10-27 05:30:02,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 05:30:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33682 states. [2020-10-27 05:30:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33682 to 6515. [2020-10-27 05:30:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6515 states. [2020-10-27 05:30:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6515 states to 6515 states and 9990 transitions. [2020-10-27 05:30:04,773 INFO L78 Accepts]: Start accepts. Automaton has 6515 states and 9990 transitions. Word has length 170 [2020-10-27 05:30:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:04,773 INFO L481 AbstractCegarLoop]: Abstraction has 6515 states and 9990 transitions. [2020-10-27 05:30:04,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:30:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6515 states and 9990 transitions. [2020-10-27 05:30:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 05:30:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:04,783 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] [2020-10-27 05:30:04,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:30:04,783 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash -941960433, now seen corresponding path program 1 times [2020-10-27 05:30:04,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:04,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454743116] [2020-10-27 05:30:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking...