/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:47:35,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:47:35,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:47:35,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:47:35,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:47:35,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:47:35,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:47:35,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:47:35,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:47:35,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:47:36,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:47:36,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:47:36,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:47:36,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:47:36,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:47:36,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:47:36,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:47:36,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:47:36,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:47:36,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:47:36,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:47:36,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:47:36,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:47:36,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:47:36,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:47:36,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:47:36,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:47:36,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:47:36,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:47:36,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:47:36,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:47:36,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:47:36,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:47:36,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:47:36,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:47:36,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:47:36,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:47:36,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:47:36,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:47:36,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:47:36,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:47:36,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:47:36,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:47:36,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:47:36,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:47:36,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:47:36,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:47:36,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:47:36,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:47:36,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:47:36,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:47:36,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:47:36,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:47:36,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:47:36,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:47:36,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:47:36,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:47:36,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:47:36,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:47:36,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:47:36,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:47:36,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:47:36,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:47:36,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:47:36,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:47:36,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:47:36,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:47:36,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:47:36,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:47:36,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:47:36,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:47:36,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:47:36,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:47:36,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:47:36,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:47:36,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:47:36,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:47:36,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:47:36,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32f7ca27/8ef30b2b3b60446188c03af25a8e8f95/FLAG277899199 [2020-10-29 13:47:37,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:47:37,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:47:37,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32f7ca27/8ef30b2b3b60446188c03af25a8e8f95/FLAG277899199 [2020-10-29 13:47:37,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32f7ca27/8ef30b2b3b60446188c03af25a8e8f95 [2020-10-29 13:47:37,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:47:37,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:47:37,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:47:37,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:47:37,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:47:37,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:47:37" (1/1) ... [2020-10-29 13:47:37,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a1e375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:37, skipping insertion in model container [2020-10-29 13:47:37,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:47:37" (1/1) ... [2020-10-29 13:47:37,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:47:37,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:47:38,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:47:38,123 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:47:38,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:47:38,233 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:47:38,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38 WrapperNode [2020-10-29 13:47:38,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:47:38,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:47:38,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:47:38,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:47:38,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... [2020-10-29 13:47:38,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:47:38,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:47:38,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:47:38,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:47:38,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:47:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:47:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:47:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:47:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:47:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:47:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:47:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:47:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:47:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:47:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:47:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:47:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:47:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:47:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:47:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:47:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:47:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:47:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:47:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:47:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:47:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:47:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:47:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:47:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:47:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:47:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:47:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:47:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:47:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:47:39,789 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:47:39,789 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:47:39,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:47:39 BoogieIcfgContainer [2020-10-29 13:47:39,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:47:39,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:47:39,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:47:39,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:47:39,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:47:37" (1/3) ... [2020-10-29 13:47:39,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c33a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:47:39, skipping insertion in model container [2020-10-29 13:47:39,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:47:38" (2/3) ... [2020-10-29 13:47:39,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c33a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:47:39, skipping insertion in model container [2020-10-29 13:47:39,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:47:39" (3/3) ... [2020-10-29 13:47:39,801 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:47:39,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:47:39,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:47:39,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:47:39,865 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:47:39,865 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:47:39,865 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:47:39,865 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:47:39,865 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:47:39,866 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:47:39,866 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:47:39,866 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:47:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-10-29 13:47:39,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:47:39,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:39,902 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] [2020-10-29 13:47:39,902 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:39,909 INFO L82 PathProgramCache]: Analyzing trace with hash 615784456, now seen corresponding path program 1 times [2020-10-29 13:47:39,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:39,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077342666] [2020-10-29 13:47:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:43,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:43,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:47:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:47:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3250 [2020-10-29 13:47:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:43,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:47:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:47:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:47:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:47:44,052 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:47:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:47:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:44,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:44,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077342666] [2020-10-29 13:47:44,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:44,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:47:44,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264604486] [2020-10-29 13:47:44,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:47:44,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:44,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:47:44,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:47:44,139 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 7 states. [2020-10-29 13:47:44,679 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:47:45,814 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 13:47:46,070 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:46,299 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:47:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:46,666 INFO L93 Difference]: Finished difference Result 658 states and 1058 transitions. [2020-10-29 13:47:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:47:46,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-29 13:47:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:46,687 INFO L225 Difference]: With dead ends: 658 [2020-10-29 13:47:46,688 INFO L226 Difference]: Without dead ends: 549 [2020-10-29 13:47:46,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:47:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-29 13:47:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 279. [2020-10-29 13:47:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-29 13:47:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 418 transitions. [2020-10-29 13:47:46,817 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 418 transitions. Word has length 69 [2020-10-29 13:47:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:46,818 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 418 transitions. [2020-10-29 13:47:46,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:47:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 418 transitions. [2020-10-29 13:47:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:47:46,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:46,822 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] [2020-10-29 13:47:46,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:47:46,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:46,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1851022144, now seen corresponding path program 1 times [2020-10-29 13:47:46,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:46,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359849087] [2020-10-29 13:47:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:47,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:47,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:47:47,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-29 13:47:47,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:47,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:47:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:47:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 13:47:47,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:48,153 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:47:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:47:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:48,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:48,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359849087] [2020-10-29 13:47:48,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:48,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:47:48,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920435511] [2020-10-29 13:47:48,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:47:48,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:48,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:47:48,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:47:48,226 INFO L87 Difference]: Start difference. First operand 279 states and 418 transitions. Second operand 7 states. [2020-10-29 13:47:49,128 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:47:49,375 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:49,640 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:47:49,916 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:47:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:50,665 INFO L93 Difference]: Finished difference Result 1021 states and 1574 transitions. [2020-10-29 13:47:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:47:50,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-29 13:47:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:50,675 INFO L225 Difference]: With dead ends: 1021 [2020-10-29 13:47:50,675 INFO L226 Difference]: Without dead ends: 808 [2020-10-29 13:47:50,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:47:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-29 13:47:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 799. [2020-10-29 13:47:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2020-10-29 13:47:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1223 transitions. [2020-10-29 13:47:50,754 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1223 transitions. Word has length 70 [2020-10-29 13:47:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:50,755 INFO L481 AbstractCegarLoop]: Abstraction has 799 states and 1223 transitions. [2020-10-29 13:47:50,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:47:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1223 transitions. [2020-10-29 13:47:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:47:50,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:50,760 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] [2020-10-29 13:47:50,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:47:50,760 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:50,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:50,761 INFO L82 PathProgramCache]: Analyzing trace with hash 842285149, now seen corresponding path program 1 times [2020-10-29 13:47:50,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:50,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98318049] [2020-10-29 13:47:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:51,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:47:51,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-29 13:47:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:51,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 13:47:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:51,670 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:47:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:51,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:51,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:51,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:47:51,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:51,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:51,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98318049] [2020-10-29 13:47:51,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:51,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:51,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332090057] [2020-10-29 13:47:51,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:51,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:51,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:51,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:51,736 INFO L87 Difference]: Start difference. First operand 799 states and 1223 transitions. Second operand 6 states. [2020-10-29 13:47:52,025 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:52,740 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:47:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:53,257 INFO L93 Difference]: Finished difference Result 2078 states and 3226 transitions. [2020-10-29 13:47:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:53,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-29 13:47:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:53,267 INFO L225 Difference]: With dead ends: 2078 [2020-10-29 13:47:53,267 INFO L226 Difference]: Without dead ends: 1356 [2020-10-29 13:47:53,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:47:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-10-29 13:47:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1353. [2020-10-29 13:47:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-10-29 13:47:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2085 transitions. [2020-10-29 13:47:53,395 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2085 transitions. Word has length 71 [2020-10-29 13:47:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:53,396 INFO L481 AbstractCegarLoop]: Abstraction has 1353 states and 2085 transitions. [2020-10-29 13:47:53,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2085 transitions. [2020-10-29 13:47:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:47:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:53,399 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] [2020-10-29 13:47:53,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:47:53,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash -737353172, now seen corresponding path program 1 times [2020-10-29 13:47:53,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:53,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712267368] [2020-10-29 13:47:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:53,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:53,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:47:53,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-29 13:47:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:47:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:54,322 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:47:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:54,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:47:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:54,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:54,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712267368] [2020-10-29 13:47:54,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:54,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:54,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976025264] [2020-10-29 13:47:54,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:54,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:54,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:54,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:54,386 INFO L87 Difference]: Start difference. First operand 1353 states and 2085 transitions. Second operand 6 states. [2020-10-29 13:47:54,645 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:55,331 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:47:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:55,890 INFO L93 Difference]: Finished difference Result 3655 states and 5697 transitions. [2020-10-29 13:47:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:55,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-29 13:47:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:55,904 INFO L225 Difference]: With dead ends: 3655 [2020-10-29 13:47:55,904 INFO L226 Difference]: Without dead ends: 2406 [2020-10-29 13:47:55,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:47:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2020-10-29 13:47:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2403. [2020-10-29 13:47:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-10-29 13:47:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3721 transitions. [2020-10-29 13:47:56,072 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3721 transitions. Word has length 71 [2020-10-29 13:47:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:56,073 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 3721 transitions. [2020-10-29 13:47:56,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3721 transitions. [2020-10-29 13:47:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:47:56,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:56,075 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] [2020-10-29 13:47:56,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:47:56,076 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 836670094, now seen corresponding path program 1 times [2020-10-29 13:47:56,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:56,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121303996] [2020-10-29 13:47:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:56,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:56,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:47:56,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-29 13:47:56,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:56,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 13:47:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:56,998 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:47:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:57,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:57,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:47:57,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:57,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:57,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121303996] [2020-10-29 13:47:57,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:57,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:57,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963071025] [2020-10-29 13:47:57,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:57,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:57,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:57,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:57,069 INFO L87 Difference]: Start difference. First operand 2403 states and 3721 transitions. Second operand 6 states. [2020-10-29 13:47:57,318 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:47:58,027 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:58,727 INFO L93 Difference]: Finished difference Result 6915 states and 10743 transitions. [2020-10-29 13:47:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:58,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-29 13:47:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:58,754 INFO L225 Difference]: With dead ends: 6915 [2020-10-29 13:47:58,755 INFO L226 Difference]: Without dead ends: 4566 [2020-10-29 13:47:58,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:47:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2020-10-29 13:47:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4563. [2020-10-29 13:47:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2020-10-29 13:47:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7034 transitions. [2020-10-29 13:47:59,164 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7034 transitions. Word has length 71 [2020-10-29 13:47:59,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:59,164 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7034 transitions. [2020-10-29 13:47:59,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7034 transitions. [2020-10-29 13:47:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:47:59,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:59,170 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] [2020-10-29 13:47:59,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:47:59,171 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1432119105, now seen corresponding path program 1 times [2020-10-29 13:47:59,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:59,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606148382] [2020-10-29 13:47:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:59,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:47:59,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-29 13:47:59,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:59,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 13:47:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:59,937 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:47:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:00,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:00,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 13:48:00,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:00,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:48:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:48:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:00,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606148382] [2020-10-29 13:48:00,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:00,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:48:00,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534359195] [2020-10-29 13:48:00,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:48:00,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:00,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:48:00,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:48:00,037 INFO L87 Difference]: Start difference. First operand 4563 states and 7034 transitions. Second operand 6 states. [2020-10-29 13:48:00,283 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:48:01,037 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:48:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:02,033 INFO L93 Difference]: Finished difference Result 13303 states and 20521 transitions. [2020-10-29 13:48:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:48:02,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-29 13:48:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:02,081 INFO L225 Difference]: With dead ends: 13303 [2020-10-29 13:48:02,081 INFO L226 Difference]: Without dead ends: 8778 [2020-10-29 13:48:02,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:48:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2020-10-29 13:48:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 8775. [2020-10-29 13:48:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8775 states. [2020-10-29 13:48:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8775 states to 8775 states and 13413 transitions. [2020-10-29 13:48:02,813 INFO L78 Accepts]: Start accepts. Automaton has 8775 states and 13413 transitions. Word has length 71 [2020-10-29 13:48:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:02,813 INFO L481 AbstractCegarLoop]: Abstraction has 8775 states and 13413 transitions. [2020-10-29 13:48:02,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:48:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8775 states and 13413 transitions. [2020-10-29 13:48:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:48:02,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:02,818 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] [2020-10-29 13:48:02,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:48:02,818 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1571267093, now seen corresponding path program 1 times [2020-10-29 13:48:02,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:02,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666656663] [2020-10-29 13:48:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:48:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-29 13:48:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:04,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:48:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:48:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:48:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:04,935 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:48:04,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:48:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:04,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:48:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:04,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666656663] [2020-10-29 13:48:04,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:04,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:48:04,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880663264] [2020-10-29 13:48:04,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:48:04,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:48:04,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:48:04,985 INFO L87 Difference]: Start difference. First operand 8775 states and 13413 transitions. Second operand 9 states. [2020-10-29 13:48:05,333 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:48:06,763 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:07,027 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:11,069 INFO L93 Difference]: Finished difference Result 43216 states and 65704 transitions. [2020-10-29 13:48:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:48:11,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-29 13:48:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:11,200 INFO L225 Difference]: With dead ends: 43216 [2020-10-29 13:48:11,200 INFO L226 Difference]: Without dead ends: 39830 [2020-10-29 13:48:11,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:48:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39830 states. [2020-10-29 13:48:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39830 to 8943. [2020-10-29 13:48:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8943 states. [2020-10-29 13:48:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8943 states to 8943 states and 13645 transitions. [2020-10-29 13:48:12,512 INFO L78 Accepts]: Start accepts. Automaton has 8943 states and 13645 transitions. Word has length 72 [2020-10-29 13:48:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:12,513 INFO L481 AbstractCegarLoop]: Abstraction has 8943 states and 13645 transitions. [2020-10-29 13:48:12,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:48:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 8943 states and 13645 transitions. [2020-10-29 13:48:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:48:12,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:12,518 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] [2020-10-29 13:48:12,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:48:12,518 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:12,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1636810357, now seen corresponding path program 1 times [2020-10-29 13:48:12,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:12,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997426170] [2020-10-29 13:48:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:14,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:14,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-29 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:48:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:48:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:15,180 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:48:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:15,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:48:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:15,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:48:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:15,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997426170] [2020-10-29 13:48:15,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:15,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:48:15,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614276763] [2020-10-29 13:48:15,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:48:15,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:15,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:48:15,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:48:15,251 INFO L87 Difference]: Start difference. First operand 8943 states and 13645 transitions. Second operand 9 states. [2020-10-29 13:48:15,672 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:48:17,323 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:17,627 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:22,362 INFO L93 Difference]: Finished difference Result 37971 states and 57763 transitions. [2020-10-29 13:48:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 13:48:22,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-29 13:48:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:22,466 INFO L225 Difference]: With dead ends: 37971 [2020-10-29 13:48:22,466 INFO L226 Difference]: Without dead ends: 36697 [2020-10-29 13:48:22,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-29 13:48:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36697 states. [2020-10-29 13:48:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36697 to 8943. [2020-10-29 13:48:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8943 states. [2020-10-29 13:48:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8943 states to 8943 states and 13643 transitions. [2020-10-29 13:48:23,590 INFO L78 Accepts]: Start accepts. Automaton has 8943 states and 13643 transitions. Word has length 72 [2020-10-29 13:48:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:23,591 INFO L481 AbstractCegarLoop]: Abstraction has 8943 states and 13643 transitions. [2020-10-29 13:48:23,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:48:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 8943 states and 13643 transitions. [2020-10-29 13:48:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:48:23,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:23,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:48:23,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:48:23,596 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:23,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1277999691, now seen corresponding path program 1 times [2020-10-29 13:48:23,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:23,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125986156] [2020-10-29 13:48:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:25,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:25,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:48:25,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-29 13:48:25,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:25,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:48:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:48:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:48:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:25,870 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-29 13:48:26,121 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:48:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:26,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:48:26,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:26,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:26,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125986156] [2020-10-29 13:48:26,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:26,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:48:26,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50733026] [2020-10-29 13:48:26,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:48:26,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:26,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:48:26,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:48:26,169 INFO L87 Difference]: Start difference. First operand 8943 states and 13643 transitions. Second operand 9 states. [2020-10-29 13:48:26,463 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:48:28,298 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:28,591 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:34,201 INFO L93 Difference]: Finished difference Result 50682 states and 77348 transitions. [2020-10-29 13:48:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:48:34,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-29 13:48:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:34,316 INFO L225 Difference]: With dead ends: 50682 [2020-10-29 13:48:34,317 INFO L226 Difference]: Without dead ends: 44167 [2020-10-29 13:48:34,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:48:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44167 states. [2020-10-29 13:48:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44167 to 9140. [2020-10-29 13:48:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9140 states. [2020-10-29 13:48:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9140 states to 9140 states and 13894 transitions. [2020-10-29 13:48:35,751 INFO L78 Accepts]: Start accepts. Automaton has 9140 states and 13894 transitions. Word has length 72 [2020-10-29 13:48:35,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:35,751 INFO L481 AbstractCegarLoop]: Abstraction has 9140 states and 13894 transitions. [2020-10-29 13:48:35,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:48:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 9140 states and 13894 transitions. [2020-10-29 13:48:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:48:35,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:35,757 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] [2020-10-29 13:48:35,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:48:35,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash -93673131, now seen corresponding path program 1 times [2020-10-29 13:48:35,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:35,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113590779] [2020-10-29 13:48:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:37,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:37,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:48:37,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-29 13:48:37,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:37,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:48:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:48:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:48:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:48:38,204 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:48:38,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:48:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:38,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:38,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113590779] [2020-10-29 13:48:38,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:38,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:48:38,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305592300] [2020-10-29 13:48:38,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:48:38,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:38,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:48:38,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:48:38,246 INFO L87 Difference]: Start difference. First operand 9140 states and 13894 transitions. Second operand 9 states. [2020-10-29 13:48:38,558 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:48:40,649 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:40,934 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:47,678 INFO L93 Difference]: Finished difference Result 48856 states and 74305 transitions. [2020-10-29 13:48:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:48:47,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-29 13:48:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:47,767 INFO L225 Difference]: With dead ends: 48856 [2020-10-29 13:48:47,768 INFO L226 Difference]: Without dead ends: 40460 [2020-10-29 13:48:47,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:48:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40460 states. [2020-10-29 13:48:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40460 to 9274. [2020-10-29 13:48:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9274 states. [2020-10-29 13:48:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 14038 transitions. [2020-10-29 13:48:49,680 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 14038 transitions. Word has length 72 [2020-10-29 13:48:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:49,680 INFO L481 AbstractCegarLoop]: Abstraction has 9274 states and 14038 transitions. [2020-10-29 13:48:49,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:48:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 14038 transitions. [2020-10-29 13:48:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:48:49,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:49,685 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] [2020-10-29 13:48:49,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:48:49,685 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:49,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:49,685 INFO L82 PathProgramCache]: Analyzing trace with hash -762836791, now seen corresponding path program 1 times [2020-10-29 13:48:49,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:49,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692847267] [2020-10-29 13:48:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:49,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:49,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:48:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:48:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:50,107 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:48:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:50,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:50,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:50,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:48:50,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:50,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:50,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692847267] [2020-10-29 13:48:50,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:50,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:48:50,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865161939] [2020-10-29 13:48:50,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:48:50,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:48:50,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:48:50,139 INFO L87 Difference]: Start difference. First operand 9274 states and 14038 transitions. Second operand 5 states. [2020-10-29 13:48:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:53,364 INFO L93 Difference]: Finished difference Result 17645 states and 26776 transitions. [2020-10-29 13:48:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:48:53,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 13:48:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:53,397 INFO L225 Difference]: With dead ends: 17645 [2020-10-29 13:48:53,397 INFO L226 Difference]: Without dead ends: 17642 [2020-10-29 13:48:53,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:48:53,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17642 states. [2020-10-29 13:48:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17642 to 9530. [2020-10-29 13:48:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9530 states. [2020-10-29 13:48:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9530 states to 9530 states and 14294 transitions. [2020-10-29 13:48:54,962 INFO L78 Accepts]: Start accepts. Automaton has 9530 states and 14294 transitions. Word has length 73 [2020-10-29 13:48:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:54,963 INFO L481 AbstractCegarLoop]: Abstraction has 9530 states and 14294 transitions. [2020-10-29 13:48:54,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:48:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9530 states and 14294 transitions. [2020-10-29 13:48:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:48:54,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:54,968 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] [2020-10-29 13:48:54,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:48:54,969 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:54,969 INFO L82 PathProgramCache]: Analyzing trace with hash -314718147, now seen corresponding path program 1 times [2020-10-29 13:48:54,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:54,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615449035] [2020-10-29 13:48:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:56,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:56,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:48:56,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-29 13:48:56,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:56,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:48:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:48:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:48:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:57,168 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:48:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:48:57,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:57,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:57,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615449035] [2020-10-29 13:48:57,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:57,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:48:57,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539328601] [2020-10-29 13:48:57,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:48:57,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:57,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:48:57,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:48:57,214 INFO L87 Difference]: Start difference. First operand 9530 states and 14294 transitions. Second operand 7 states. [2020-10-29 13:48:57,495 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:48:58,495 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 13:48:58,747 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:48:59,098 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 13:48:59,363 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:48:59,702 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:49:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:03,467 INFO L93 Difference]: Finished difference Result 29756 states and 45300 transitions. [2020-10-29 13:49:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:49:03,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-29 13:49:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:03,510 INFO L225 Difference]: With dead ends: 29756 [2020-10-29 13:49:03,511 INFO L226 Difference]: Without dead ends: 25569 [2020-10-29 13:49:03,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25569 states. [2020-10-29 13:49:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25569 to 14649. [2020-10-29 13:49:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14649 states. [2020-10-29 13:49:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14649 states to 14649 states and 22069 transitions. [2020-10-29 13:49:06,082 INFO L78 Accepts]: Start accepts. Automaton has 14649 states and 22069 transitions. Word has length 74 [2020-10-29 13:49:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:06,082 INFO L481 AbstractCegarLoop]: Abstraction has 14649 states and 22069 transitions. [2020-10-29 13:49:06,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:49:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14649 states and 22069 transitions. [2020-10-29 13:49:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:49:06,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:06,087 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] [2020-10-29 13:49:06,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:49:06,087 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:06,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2131398602, now seen corresponding path program 1 times [2020-10-29 13:49:06,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:06,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482814605] [2020-10-29 13:49:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:06,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:49:06,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 13:49:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:06,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:49:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:49:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:49:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:06,603 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:49:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:49:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:06,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:49:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:49:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:06,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482814605] [2020-10-29 13:49:06,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:06,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:49:06,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236749058] [2020-10-29 13:49:06,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:49:06,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:06,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:49:06,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:49:06,645 INFO L87 Difference]: Start difference. First operand 14649 states and 22069 transitions. Second operand 5 states. [2020-10-29 13:49:06,946 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:49:07,756 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:49:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:12,063 INFO L93 Difference]: Finished difference Result 39375 states and 59393 transitions. [2020-10-29 13:49:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:49:12,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 13:49:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:12,109 INFO L225 Difference]: With dead ends: 39375 [2020-10-29 13:49:12,109 INFO L226 Difference]: Without dead ends: 25892 [2020-10-29 13:49:12,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:49:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25892 states. [2020-10-29 13:49:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25892 to 25697. [2020-10-29 13:49:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25697 states. [2020-10-29 13:49:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25697 states to 25697 states and 38365 transitions. [2020-10-29 13:49:16,428 INFO L78 Accepts]: Start accepts. Automaton has 25697 states and 38365 transitions. Word has length 74 [2020-10-29 13:49:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:16,428 INFO L481 AbstractCegarLoop]: Abstraction has 25697 states and 38365 transitions. [2020-10-29 13:49:16,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:49:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 25697 states and 38365 transitions. [2020-10-29 13:49:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:49:16,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:16,432 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] [2020-10-29 13:49:16,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:49:16,433 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:16,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1085675365, now seen corresponding path program 1 times [2020-10-29 13:49:16,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:16,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885062578] [2020-10-29 13:49:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:18,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:18,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:49:18,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:49:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1838 [2020-10-29 13:49:18,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:18,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:49:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:49:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:49:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:18,591 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:49:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:18,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:18,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:18,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:49:18,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:18,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885062578] [2020-10-29 13:49:18,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:18,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:18,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735018817] [2020-10-29 13:49:18,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:49:18,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:18,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:49:18,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:49:18,627 INFO L87 Difference]: Start difference. First operand 25697 states and 38365 transitions. Second operand 7 states. [2020-10-29 13:49:19,021 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:49:19,968 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:49:20,365 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 13:49:25,395 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:49:25,674 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 13:49:25,961 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:49:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:28,477 INFO L93 Difference]: Finished difference Result 55712 states and 83528 transitions. [2020-10-29 13:49:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:49:28,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-29 13:49:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:28,526 INFO L225 Difference]: With dead ends: 55712 [2020-10-29 13:49:28,527 INFO L226 Difference]: Without dead ends: 43965 [2020-10-29 13:49:28,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43965 states. [2020-10-29 13:49:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43965 to 29282. [2020-10-29 13:49:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29282 states. [2020-10-29 13:49:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29282 states to 29282 states and 43691 transitions. [2020-10-29 13:49:34,130 INFO L78 Accepts]: Start accepts. Automaton has 29282 states and 43691 transitions. Word has length 74 [2020-10-29 13:49:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:34,131 INFO L481 AbstractCegarLoop]: Abstraction has 29282 states and 43691 transitions. [2020-10-29 13:49:34,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:49:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 29282 states and 43691 transitions. [2020-10-29 13:49:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:49:34,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:34,134 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] [2020-10-29 13:49:34,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:49:34,134 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:34,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1012120549, now seen corresponding path program 1 times [2020-10-29 13:49:34,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:34,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765046166] [2020-10-29 13:49:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:36,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:36,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:49:36,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:49:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-29 13:49:36,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:36,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:49:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:49:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:49:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:36,363 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:49:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:49:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:36,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765046166] [2020-10-29 13:49:36,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:36,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:36,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178853604] [2020-10-29 13:49:36,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:49:36,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:36,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:49:36,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:49:36,398 INFO L87 Difference]: Start difference. First operand 29282 states and 43691 transitions. Second operand 7 states. [2020-10-29 13:49:36,680 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:49:37,743 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:49:38,119 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 13:49:44,208 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:49:44,498 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:49:44,914 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 13:49:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:47,957 INFO L93 Difference]: Finished difference Result 59545 states and 89030 transitions. [2020-10-29 13:49:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:49:47,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-29 13:49:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:48,020 INFO L225 Difference]: With dead ends: 59545 [2020-10-29 13:49:48,020 INFO L226 Difference]: Without dead ends: 51190 [2020-10-29 13:49:48,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51190 states. [2020-10-29 13:49:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51190 to 33596. [2020-10-29 13:49:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33596 states. [2020-10-29 13:49:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33596 states to 33596 states and 50116 transitions. [2020-10-29 13:49:54,237 INFO L78 Accepts]: Start accepts. Automaton has 33596 states and 50116 transitions. Word has length 74 [2020-10-29 13:49:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:54,238 INFO L481 AbstractCegarLoop]: Abstraction has 33596 states and 50116 transitions. [2020-10-29 13:49:54,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:49:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 33596 states and 50116 transitions. [2020-10-29 13:49:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:49:54,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:54,245 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] [2020-10-29 13:49:54,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:49:54,246 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2029263805, now seen corresponding path program 1 times [2020-10-29 13:49:54,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:54,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850057394] [2020-10-29 13:49:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:55,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:55,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:49:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:49:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:56,027 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:49:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:56,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:49:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:56,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850057394] [2020-10-29 13:49:56,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:56,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:56,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506208242] [2020-10-29 13:49:56,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:49:56,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:56,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:49:56,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:49:56,055 INFO L87 Difference]: Start difference. First operand 33596 states and 50116 transitions. Second operand 7 states. [2020-10-29 13:49:56,357 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:49:57,564 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:49:57,848 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 13:50:04,737 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:50:05,067 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 13:50:05,339 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:50:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:09,171 INFO L93 Difference]: Finished difference Result 68545 states and 102456 transitions. [2020-10-29 13:50:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:50:09,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-29 13:50:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:09,254 INFO L225 Difference]: With dead ends: 68545 [2020-10-29 13:50:09,254 INFO L226 Difference]: Without dead ends: 56558 [2020-10-29 13:50:09,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:50:09,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56558 states. [2020-10-29 13:50:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56558 to 38973. [2020-10-29 13:50:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38973 states. [2020-10-29 13:50:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38973 states to 38973 states and 58134 transitions. [2020-10-29 13:50:16,226 INFO L78 Accepts]: Start accepts. Automaton has 38973 states and 58134 transitions. Word has length 74 [2020-10-29 13:50:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:16,226 INFO L481 AbstractCegarLoop]: Abstraction has 38973 states and 58134 transitions. [2020-10-29 13:50:16,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:50:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 38973 states and 58134 transitions. [2020-10-29 13:50:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 13:50:16,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:16,230 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] [2020-10-29 13:50:16,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:50:16,230 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash -261799595, now seen corresponding path program 1 times [2020-10-29 13:50:16,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:16,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764697737] [2020-10-29 13:50:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:21,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:21,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 13:50:21,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:50:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:50:21,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:21,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:50:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:50:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:50:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:21,596 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:50:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:21,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:50:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:21,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:50:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:21,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764697737] [2020-10-29 13:50:21,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:21,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:50:21,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603209358] [2020-10-29 13:50:21,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:50:21,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:50:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:50:21,639 INFO L87 Difference]: Start difference. First operand 38973 states and 58134 transitions. Second operand 8 states. [2020-10-29 13:50:22,073 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 13:50:23,427 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:50:36,026 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 13:51:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:04,566 INFO L93 Difference]: Finished difference Result 218613 states and 324643 transitions. [2020-10-29 13:51:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:51:04,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-29 13:51:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:05,106 INFO L225 Difference]: With dead ends: 218613 [2020-10-29 13:51:05,106 INFO L226 Difference]: Without dead ends: 208876 [2020-10-29 13:51:05,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:51:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208876 states. [2020-10-29 13:51:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208876 to 39434. [2020-10-29 13:51:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39434 states. [2020-10-29 13:51:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39434 states to 39434 states and 58791 transitions. [2020-10-29 13:51:14,177 INFO L78 Accepts]: Start accepts. Automaton has 39434 states and 58791 transitions. Word has length 77 [2020-10-29 13:51:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:14,178 INFO L481 AbstractCegarLoop]: Abstraction has 39434 states and 58791 transitions. [2020-10-29 13:51:14,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:51:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 39434 states and 58791 transitions. [2020-10-29 13:51:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 13:51:14,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:14,182 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] [2020-10-29 13:51:14,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:51:14,183 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash -2094150125, now seen corresponding path program 1 times [2020-10-29 13:51:14,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:14,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803629772] [2020-10-29 13:51:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking...