/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:10:08,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:10:08,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:10:08,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:10:08,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:10:08,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:10:08,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:10:08,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:10:08,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:10:08,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:10:08,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:10:08,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:10:08,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:10:08,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:10:08,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:10:08,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:10:08,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:10:08,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:10:08,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:10:09,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:10:09,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:10:09,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:10:09,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:10:09,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:10:09,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:10:09,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:10:09,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:10:09,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:10:09,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:10:09,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:10:09,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:10:09,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:10:09,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:10:09,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:10:09,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:10:09,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:10:09,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:10:09,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:10:09,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:10:09,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:10:09,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:10:09,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:10:09,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:10:09,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:10:09,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:10:09,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:10:09,069 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:10:09,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:10:09,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:10:09,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:10:09,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:10:09,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:10:09,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:10:09,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:10:09,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:10:09,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:10:09,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:10:09,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:10:09,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:10:09,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:10:09,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:10:09,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:10:09,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:10:09,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:10:09,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:10:09,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:10:09,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:10:09,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:10:09,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:10:09,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:10:09,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:10:09,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:10:09,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:10:09,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:10:09,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:10:09,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:10:09,481 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:10:09,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 23:10:09,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe013994e/eb6efb0ec82a4a29b81985099c1f64d1/FLAG279e584be [2020-10-27 23:10:10,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:10:10,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 23:10:10,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe013994e/eb6efb0ec82a4a29b81985099c1f64d1/FLAG279e584be [2020-10-27 23:10:10,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe013994e/eb6efb0ec82a4a29b81985099c1f64d1 [2020-10-27 23:10:10,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:10:10,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:10:10,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:10:10,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:10:10,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:10:10,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:10:10" (1/1) ... [2020-10-27 23:10:10,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbf458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:10, skipping insertion in model container [2020-10-27 23:10:10,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:10:10" (1/1) ... [2020-10-27 23:10:10,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:10:10,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:10:10,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:10:10,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:10:11,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:10:11,094 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:10:11,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11 WrapperNode [2020-10-27 23:10:11,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:10:11,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:10:11,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:10:11,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:10:11,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... [2020-10-27 23:10:11,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:10:11,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:10:11,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:10:11,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:10:11,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:10:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:10:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:10:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:10:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:10:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:10:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:10:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:10:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:10:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:10:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:10:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:10:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:10:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:10:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:10:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:10:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:10:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:10:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:10:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:10:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:10:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:10:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:10:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:10:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:10:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:10:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:10:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:10:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:10:12,341 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:10:12,341 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:10:12,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:10:12 BoogieIcfgContainer [2020-10-27 23:10:12,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:10:12,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:10:12,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:10:12,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:10:12,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:10:10" (1/3) ... [2020-10-27 23:10:12,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5322828f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:10:12, skipping insertion in model container [2020-10-27 23:10:12,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:10:11" (2/3) ... [2020-10-27 23:10:12,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5322828f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:10:12, skipping insertion in model container [2020-10-27 23:10:12,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:10:12" (3/3) ... [2020-10-27 23:10:12,354 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 23:10:12,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:10:12,374 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:10:12,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:10:12,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:10:12,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:10:12,421 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:10:12,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:10:12,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:10:12,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:10:12,422 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:10:12,422 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:10:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-10-27 23:10:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:10:12,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:12,462 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] [2020-10-27 23:10:12,462 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:12,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1954275873, now seen corresponding path program 1 times [2020-10-27 23:10:12,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:12,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049129980] [2020-10-27 23:10:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:13,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:13,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:10:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-27 23:10:13,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 23:10:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:13,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:10:13,828 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:13,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:13,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:13,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:10:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:13,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 23:10:13,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 23:10:13,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 23:10:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:13,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:13,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:10:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:10:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 23:10:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:14,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:14,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:10:14,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:10:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:14,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:14,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:14,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:10:14,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:14,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:10:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:14,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:10:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:14,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:14,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:10:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:10:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:10:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:14,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049129980] [2020-10-27 23:10:14,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:14,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:10:14,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238659135] [2020-10-27 23:10:14,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:10:14,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:10:14,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:10:14,333 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 6 states. [2020-10-27 23:10:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:15,698 INFO L93 Difference]: Finished difference Result 292 states and 465 transitions. [2020-10-27 23:10:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:10:15,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 23:10:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:15,717 INFO L225 Difference]: With dead ends: 292 [2020-10-27 23:10:15,717 INFO L226 Difference]: Without dead ends: 184 [2020-10-27 23:10:15,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:10:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-27 23:10:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-27 23:10:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 23:10:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 271 transitions. [2020-10-27 23:10:15,792 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 271 transitions. Word has length 66 [2020-10-27 23:10:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:15,793 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 271 transitions. [2020-10-27 23:10:15,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:10:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 271 transitions. [2020-10-27 23:10:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:10:15,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:15,797 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] [2020-10-27 23:10:15,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:10:15,797 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:15,798 INFO L82 PathProgramCache]: Analyzing trace with hash 108908707, now seen corresponding path program 1 times [2020-10-27 23:10:15,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:15,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198270853] [2020-10-27 23:10:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:16,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:16,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 23:10:16,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-27 23:10:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:10:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:10:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:10:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:17,031 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:17,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 23:10:17,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 23:10:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 23:10:17,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:10:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 23:10:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:10:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:10:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 23:10:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:10:17,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 23:10:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:10:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:17,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:10:17,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:10:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:10:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:17,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:10:17,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:10:17,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:17,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:17,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:10:17,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:17,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:10:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:10:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:17,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198270853] [2020-10-27 23:10:17,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:17,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:10:17,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449782823] [2020-10-27 23:10:17,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:10:17,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:17,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:10:17,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:10:17,542 INFO L87 Difference]: Start difference. First operand 169 states and 271 transitions. Second operand 12 states. [2020-10-27 23:10:18,225 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:10:18,606 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:10:19,054 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:19,393 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:10:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:21,406 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2020-10-27 23:10:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:10:21,412 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 23:10:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:21,417 INFO L225 Difference]: With dead ends: 287 [2020-10-27 23:10:21,417 INFO L226 Difference]: Without dead ends: 184 [2020-10-27 23:10:21,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:10:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-27 23:10:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-27 23:10:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 23:10:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 241 transitions. [2020-10-27 23:10:21,480 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 241 transitions. Word has length 66 [2020-10-27 23:10:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:21,480 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 241 transitions. [2020-10-27 23:10:21,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:10:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 241 transitions. [2020-10-27 23:10:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 23:10:21,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:21,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:10:21,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:10:21,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1049922032, now seen corresponding path program 1 times [2020-10-27 23:10:21,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:21,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675593409] [2020-10-27 23:10:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:21,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:26,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 23:10:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:10:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:10:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:10:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:10:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:10:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:10:26,948 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:26,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:10:26,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:27,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:27,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:27,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 23:10:27,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:10:27,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:10:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:27,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:27,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:27,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:10:27,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:10:27,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:10:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:10:27,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:10:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:27,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:10:27,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:10:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:27,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:10:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:10:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:10:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:10:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:27,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675593409] [2020-10-27 23:10:27,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:27,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:10:27,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900101722] [2020-10-27 23:10:27,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:10:27,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:27,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:10:27,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:10:27,497 INFO L87 Difference]: Start difference. First operand 169 states and 241 transitions. Second operand 13 states. [2020-10-27 23:10:27,862 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:10:28,530 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:10:28,847 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:31,625 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:31,930 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:10:32,284 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:10:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:37,387 INFO L93 Difference]: Finished difference Result 944 states and 1446 transitions. [2020-10-27 23:10:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 23:10:37,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-27 23:10:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:37,401 INFO L225 Difference]: With dead ends: 944 [2020-10-27 23:10:37,401 INFO L226 Difference]: Without dead ends: 847 [2020-10-27 23:10:37,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=574, Invalid=1976, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 23:10:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-27 23:10:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 724. [2020-10-27 23:10:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-27 23:10:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1105 transitions. [2020-10-27 23:10:37,565 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1105 transitions. Word has length 95 [2020-10-27 23:10:37,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:37,568 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1105 transitions. [2020-10-27 23:10:37,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:10:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1105 transitions. [2020-10-27 23:10:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 23:10:37,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:37,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:10:37,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:10:37,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash 652938396, now seen corresponding path program 1 times [2020-10-27 23:10:37,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:37,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828210873] [2020-10-27 23:10:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:42,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 23:10:42,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:10:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:10:42,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 23:10:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:10:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:10:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:10:43,059 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:10:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:10:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:10:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:10:43,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:10:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:10:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:10:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:10:43,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 23:10:43,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:10:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:10:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:10:43,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:10:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:10:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:10:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:10:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:43,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:10:43,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:10:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:43,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:10:43,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:43,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:10:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:43,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:10:43,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:10:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:10:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:10:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:10:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:10:43,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:10:43,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:10:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:10:43,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:10:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:10:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:10:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:10:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:10:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:10:43,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828210873] [2020-10-27 23:10:43,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:10:43,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:10:43,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162562259] [2020-10-27 23:10:43,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:10:43,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:10:43,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:10:43,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:10:43,651 INFO L87 Difference]: Start difference. First operand 724 states and 1105 transitions. Second operand 14 states. [2020-10-27 23:10:44,068 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:10:44,722 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:10:45,030 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:45,358 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:10:48,137 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:10:48,445 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:48,801 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:10:49,120 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:10:50,562 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 23:10:51,986 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-27 23:10:53,561 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:10:53,916 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:10:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:10:58,242 INFO L93 Difference]: Finished difference Result 3592 states and 5695 transitions. [2020-10-27 23:10:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 23:10:58,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-27 23:10:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:10:58,266 INFO L225 Difference]: With dead ends: 3592 [2020-10-27 23:10:58,266 INFO L226 Difference]: Without dead ends: 2940 [2020-10-27 23:10:58,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=953, Invalid=3877, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 23:10:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-10-27 23:10:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2015. [2020-10-27 23:10:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2015 states. [2020-10-27 23:10:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3149 transitions. [2020-10-27 23:10:58,480 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3149 transitions. Word has length 96 [2020-10-27 23:10:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:10:58,480 INFO L481 AbstractCegarLoop]: Abstraction has 2015 states and 3149 transitions. [2020-10-27 23:10:58,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:10:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3149 transitions. [2020-10-27 23:10:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:10:58,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:10:58,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:10:58,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:10:58,484 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:10:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:10:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 299771065, now seen corresponding path program 1 times [2020-10-27 23:10:58,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:10:58,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184525409] [2020-10-27 23:10:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:10:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:10:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:10:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:03,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:03,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:11:03,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:11:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:11:03,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:11:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:11:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:11:03,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:03,864 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:03,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:03,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:03,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:03,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:03,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:11:03,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:03,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:03,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 23:11:03,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:11:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:11:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:03,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:03,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:03,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:03,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:11:03,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:04,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:04,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:04,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:11:04,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:11:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:11:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:04,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:04,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:11:04,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:11:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:11:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:04,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:04,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:11:04,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:11:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:11:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:11:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:11:04,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 23:11:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:11:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:11:04,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184525409] [2020-10-27 23:11:04,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:04,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:11:04,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239280919] [2020-10-27 23:11:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:11:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:04,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:11:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:11:04,318 INFO L87 Difference]: Start difference. First operand 2015 states and 3149 transitions. Second operand 10 states. [2020-10-27 23:11:04,647 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:11:05,262 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:11:07,398 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:11:07,695 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:11:09,603 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-27 23:11:09,736 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 23:11:09,957 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-27 23:11:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:11,382 INFO L93 Difference]: Finished difference Result 8159 states and 12862 transitions. [2020-10-27 23:11:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 23:11:11,385 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-27 23:11:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:11,429 INFO L225 Difference]: With dead ends: 8159 [2020-10-27 23:11:11,429 INFO L226 Difference]: Without dead ends: 6243 [2020-10-27 23:11:11,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:11:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2020-10-27 23:11:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 5334. [2020-10-27 23:11:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5334 states. [2020-10-27 23:11:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8336 transitions. [2020-10-27 23:11:11,866 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8336 transitions. Word has length 97 [2020-10-27 23:11:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:11,868 INFO L481 AbstractCegarLoop]: Abstraction has 5334 states and 8336 transitions. [2020-10-27 23:11:11,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:11:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8336 transitions. [2020-10-27 23:11:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:11:11,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:11,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:11:11,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:11:11,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash 634252645, now seen corresponding path program 1 times [2020-10-27 23:11:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:11,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735860859] [2020-10-27 23:11:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:13,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:16,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:16,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 23:11:16,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:11:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:11:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:11:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 23:11:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:11:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,392 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:11:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 23:11:17,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:11:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:11:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:17,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:11:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:11:17,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:11:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:11:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:11:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:11:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:11:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:17,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:11:17,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:11:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:11:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:17,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:17,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:11:17,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:11:17,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 23:11:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:11:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:11:17,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735860859] [2020-10-27 23:11:17,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:17,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:11:17,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135648248] [2020-10-27 23:11:17,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:11:17,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:17,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:11:17,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:11:17,812 INFO L87 Difference]: Start difference. First operand 5334 states and 8336 transitions. Second operand 10 states. [2020-10-27 23:11:18,161 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:11:18,838 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:11:20,808 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:11:21,178 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:11:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:25,953 INFO L93 Difference]: Finished difference Result 30927 states and 48665 transitions. [2020-10-27 23:11:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 23:11:25,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-27 23:11:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:26,121 INFO L225 Difference]: With dead ends: 30927 [2020-10-27 23:11:26,121 INFO L226 Difference]: Without dead ends: 25692 [2020-10-27 23:11:26,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:11:26,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25692 states. [2020-10-27 23:11:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25692 to 19011. [2020-10-27 23:11:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19011 states. [2020-10-27 23:11:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19011 states to 19011 states and 29620 transitions. [2020-10-27 23:11:27,668 INFO L78 Accepts]: Start accepts. Automaton has 19011 states and 29620 transitions. Word has length 98 [2020-10-27 23:11:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:27,669 INFO L481 AbstractCegarLoop]: Abstraction has 19011 states and 29620 transitions. [2020-10-27 23:11:27,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:11:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 19011 states and 29620 transitions. [2020-10-27 23:11:27,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:11:27,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:27,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:11:27,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:11:27,673 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash 19956004, now seen corresponding path program 1 times [2020-10-27 23:11:27,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:27,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890685062] [2020-10-27 23:11:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:32,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:32,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:11:32,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:11:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:11:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:11:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:11:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:33,084 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:33,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:11:33,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:33,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 23:11:33,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:11:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:11:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:33,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:11:33,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:11:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:11:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:11:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:11:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:11:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:11:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:11:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:11:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 23:11:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:33,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:11:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:11:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:11:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:33,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:33,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:11:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:11:33,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:11:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:11:33,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890685062] [2020-10-27 23:11:33,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:33,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:11:33,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550711167] [2020-10-27 23:11:33,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:11:33,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:11:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:11:33,488 INFO L87 Difference]: Start difference. First operand 19011 states and 29620 transitions. Second operand 9 states. [2020-10-27 23:11:33,823 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:11:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:38,405 INFO L93 Difference]: Finished difference Result 56277 states and 87910 transitions. [2020-10-27 23:11:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:11:38,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 23:11:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:38,563 INFO L225 Difference]: With dead ends: 56277 [2020-10-27 23:11:38,563 INFO L226 Difference]: Without dead ends: 37352 [2020-10-27 23:11:38,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:11:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37352 states. [2020-10-27 23:11:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37352 to 32284. [2020-10-27 23:11:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32284 states. [2020-10-27 23:11:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32284 states to 32284 states and 49623 transitions. [2020-10-27 23:11:41,270 INFO L78 Accepts]: Start accepts. Automaton has 32284 states and 49623 transitions. Word has length 99 [2020-10-27 23:11:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:41,271 INFO L481 AbstractCegarLoop]: Abstraction has 32284 states and 49623 transitions. [2020-10-27 23:11:41,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:11:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 32284 states and 49623 transitions. [2020-10-27 23:11:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:11:41,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:41,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:11:41,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:11:41,278 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash -281255620, now seen corresponding path program 1 times [2020-10-27 23:11:41,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:41,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449644525] [2020-10-27 23:11:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:11:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:11:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:11:46,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 23:11:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:11:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,636 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:11:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:11:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:11:46,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:11:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:11:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:11:46,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 23:11:46,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:11:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:11:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:11:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:11:46,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:11:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:11:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:11:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:11:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:11:46,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:11:46,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:11:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:11:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:11:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 23:11:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:11:46,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:11:46,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:11:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:11:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:46,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:11:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:11:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:11:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:11:46,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:11:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:11:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:11:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:11:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:11:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:11:46,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449644525] [2020-10-27 23:11:46,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:11:46,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:11:46,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912210671] [2020-10-27 23:11:46,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:11:46,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:11:46,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:11:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:11:46,945 INFO L87 Difference]: Start difference. First operand 32284 states and 49623 transitions. Second operand 9 states. [2020-10-27 23:11:47,241 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:11:49,250 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 23:11:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:11:52,484 INFO L93 Difference]: Finished difference Result 96177 states and 148325 transitions. [2020-10-27 23:11:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:11:52,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 23:11:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:11:52,796 INFO L225 Difference]: With dead ends: 96177 [2020-10-27 23:11:52,796 INFO L226 Difference]: Without dead ends: 63981 [2020-10-27 23:11:52,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:11:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63981 states. [2020-10-27 23:11:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63981 to 56013. [2020-10-27 23:11:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56013 states. [2020-10-27 23:11:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56013 states to 56013 states and 84461 transitions. [2020-10-27 23:11:57,133 INFO L78 Accepts]: Start accepts. Automaton has 56013 states and 84461 transitions. Word has length 99 [2020-10-27 23:11:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:11:57,134 INFO L481 AbstractCegarLoop]: Abstraction has 56013 states and 84461 transitions. [2020-10-27 23:11:57,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:11:57,134 INFO L276 IsEmpty]: Start isEmpty. Operand 56013 states and 84461 transitions. [2020-10-27 23:11:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:11:57,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:11:57,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:11:57,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:11:57,141 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:11:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:11:57,141 INFO L82 PathProgramCache]: Analyzing trace with hash -959341660, now seen corresponding path program 1 times [2020-10-27 23:11:57,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:11:57,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736222982] [2020-10-27 23:11:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:11:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:11:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:11:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:12:02,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:12:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:12:02,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 23:12:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:12:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,502 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:12:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:12:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:12:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:12:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:12:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:12:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:12:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:12:02,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:12:02,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:12:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:12:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:02,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:12:02,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:12:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:12:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:12:02,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:12:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:12:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:12:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:12:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:12:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:12:02,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:12:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:12:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:12:02,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736222982] [2020-10-27 23:12:02,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:12:02,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:12:02,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606591442] [2020-10-27 23:12:02,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:12:02,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:12:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:12:02,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:12:02,843 INFO L87 Difference]: Start difference. First operand 56013 states and 84461 transitions. Second operand 9 states. [2020-10-27 23:12:03,247 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:12:04,592 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-27 23:12:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:12:11,250 INFO L93 Difference]: Finished difference Result 163178 states and 246826 transitions. [2020-10-27 23:12:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:12:11,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 23:12:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:12:11,901 INFO L225 Difference]: With dead ends: 163178 [2020-10-27 23:12:11,901 INFO L226 Difference]: Without dead ends: 107253 [2020-10-27 23:12:12,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:12:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107253 states. [2020-10-27 23:12:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107253 to 95495. [2020-10-27 23:12:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95495 states. [2020-10-27 23:12:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95495 states to 95495 states and 140332 transitions. [2020-10-27 23:12:19,175 INFO L78 Accepts]: Start accepts. Automaton has 95495 states and 140332 transitions. Word has length 99 [2020-10-27 23:12:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:12:19,176 INFO L481 AbstractCegarLoop]: Abstraction has 95495 states and 140332 transitions. [2020-10-27 23:12:19,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:12:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 95495 states and 140332 transitions. [2020-10-27 23:12:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:12:19,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:12:19,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:12:19,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:12:19,178 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:12:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:12:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash 504939277, now seen corresponding path program 1 times [2020-10-27 23:12:19,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:12:19,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124478915] [2020-10-27 23:12:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:12:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 23:12:24,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:12:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 23:12:24,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:12:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:12:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:12:24,562 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:12:24,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:12:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:12:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:12:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:12:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:12:24,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:12:24,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:12:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:12:24,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:12:24,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:24,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:12:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:12:24,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:12:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:12:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:24,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:12:24,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:24,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:24,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:12:24,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:12:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:24,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:12:24,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:12:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:12:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:24,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:24,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:12:24,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:24,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:12:24,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:12:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:12:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:12:24,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124478915] [2020-10-27 23:12:24,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:12:24,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:12:24,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278349774] [2020-10-27 23:12:24,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:12:24,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:12:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:12:24,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:12:24,864 INFO L87 Difference]: Start difference. First operand 95495 states and 140332 transitions. Second operand 8 states. [2020-10-27 23:12:25,187 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:12:26,998 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:12:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:12:38,214 INFO L93 Difference]: Finished difference Result 273062 states and 404903 transitions. [2020-10-27 23:12:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:12:38,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-27 23:12:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:12:38,896 INFO L225 Difference]: With dead ends: 273062 [2020-10-27 23:12:38,896 INFO L226 Difference]: Without dead ends: 177652 [2020-10-27 23:12:39,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:12:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177652 states. [2020-10-27 23:12:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177652 to 160071. [2020-10-27 23:12:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160071 states. [2020-10-27 23:12:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160071 states to 160071 states and 230091 transitions. [2020-10-27 23:12:50,580 INFO L78 Accepts]: Start accepts. Automaton has 160071 states and 230091 transitions. Word has length 100 [2020-10-27 23:12:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:12:50,581 INFO L481 AbstractCegarLoop]: Abstraction has 160071 states and 230091 transitions. [2020-10-27 23:12:50,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:12:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 160071 states and 230091 transitions. [2020-10-27 23:12:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 23:12:50,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:12:50,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:12:50,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:12:50,582 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:12:50,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:12:50,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1808641022, now seen corresponding path program 1 times [2020-10-27 23:12:50,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:12:50,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949101633] [2020-10-27 23:12:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:12:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:12:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:55,925 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:12:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:12:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:12:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:12:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:12:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:56,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:12:56,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:12:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:12:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:12:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:12:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 23:12:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:56,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:12:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:56,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:56,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:56,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:12:56,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:12:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:12:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:56,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 23:12:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:56,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:56,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:56,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:12:56,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:12:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:12:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 23:12:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:12:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:12:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:12:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:12:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:12:56,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949101633] [2020-10-27 23:12:56,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:12:56,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:12:56,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087472683] [2020-10-27 23:12:56,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:12:56,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:12:56,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:12:56,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:12:56,341 INFO L87 Difference]: Start difference. First operand 160071 states and 230091 transitions. Second operand 13 states. [2020-10-27 23:12:56,688 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:12:57,335 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:12:57,641 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:12:59,043 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:13:00,163 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:13:01,557 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:13:05,548 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 23:13:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:13:18,634 INFO L93 Difference]: Finished difference Result 381416 states and 553243 transitions. [2020-10-27 23:13:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 23:13:18,636 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-10-27 23:13:18,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:13:19,600 INFO L225 Difference]: With dead ends: 381416 [2020-10-27 23:13:19,601 INFO L226 Difference]: Without dead ends: 221433 [2020-10-27 23:13:19,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=573, Invalid=1877, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 23:13:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221433 states.