/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:57:14,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:57:14,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:57:14,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:57:14,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:57:14,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:57:14,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:57:14,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:57:14,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:57:14,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:57:14,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:57:14,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:57:14,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:57:14,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:57:14,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:57:14,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:57:14,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:57:14,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:57:14,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:57:14,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:57:14,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:57:14,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:57:14,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:57:14,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:57:14,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:57:14,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:57:14,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:57:14,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:57:14,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:57:14,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:57:14,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:57:14,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:57:14,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:57:14,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:57:14,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:57:14,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:57:14,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:57:14,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:57:14,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:57:14,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:57:14,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:57:14,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:57:14,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:57:14,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:57:14,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:57:14,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:57:14,312 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:57:14,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:57:14,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:57:14,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:57:14,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:57:14,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:57:14,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:57:14,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:57:14,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:57:14,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:57:14,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:57:14,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:57:14,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:57:14,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:57:14,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:57:14,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:57:14,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:57:14,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:57:14,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:57:14,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:57:14,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:57:14,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:57:14,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:57:14,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:57:14,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:57:14,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:57:14,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:57:14,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:57:14,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:57:14,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:57:14,866 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:57:14,868 INFO L432 ainManager$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 [2020-10-28 17:57:14,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d472060df/36025721f6414d5b86aa296eb52a4108/FLAG870363f1e [2020-10-28 17:57:15,732 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:57:15,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:57:15,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d472060df/36025721f6414d5b86aa296eb52a4108/FLAG870363f1e [2020-10-28 17:57:16,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d472060df/36025721f6414d5b86aa296eb52a4108 [2020-10-28 17:57:16,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:57:16,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:57:16,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:57:16,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:57:16,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:57:16,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e39eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16, skipping insertion in model container [2020-10-28 17:57:16,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:57:16,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:57:16,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:57:16,447 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:57:16,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:57:16,615 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:57:16,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16 WrapperNode [2020-10-28 17:57:16,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:57:16,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:57:16,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:57:16,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:57:16,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... [2020-10-28 17:57:16,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:57:16,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:57:16,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:57:16,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:57:16,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:57:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:57:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:57:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:57:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:57:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:57:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:57:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:57:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:57:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:57:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:57:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:57:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:57:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:57:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:57:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:57:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:57:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:57:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:57:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:57:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:57:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:57:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:57:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:57:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:57:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:57:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:57:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:57:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:57:18,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:57:18,048 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:57:18,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:57:18 BoogieIcfgContainer [2020-10-28 17:57:18,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:57:18,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:57:18,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:57:18,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:57:18,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:57:16" (1/3) ... [2020-10-28 17:57:18,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aefc06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:57:18, skipping insertion in model container [2020-10-28 17:57:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:16" (2/3) ... [2020-10-28 17:57:18,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aefc06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:57:18, skipping insertion in model container [2020-10-28 17:57:18,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:57:18" (3/3) ... [2020-10-28 17:57:18,069 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:57:18,082 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:57:18,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:57:18,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:57:18,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:57:18,147 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:57:18,148 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:57:18,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:57:18,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:57:18,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:57:18,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:57:18,148 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:57:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-10-28 17:57:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:57:18,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:18,206 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] [2020-10-28 17:57:18,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:18,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1954275873, now seen corresponding path program 1 times [2020-10-28 17:57:18,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:18,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424391837] [2020-10-28 17:57:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:18,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:57:19,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-28 17:57:19,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:57:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:57:19,496 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:19,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:19,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:57:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:19,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:57:19,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:57:19,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:57:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:57:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:19,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:57:19,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:57:19,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:57:19,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:57:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:19,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:57:19,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:57:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:57:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:19,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:57:19,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:57:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:57:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:19,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:19,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:19,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:19,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:19,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:19,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424391837] [2020-10-28 17:57:19,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:19,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:57:19,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762077153] [2020-10-28 17:57:19,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:57:19,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:19,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:57:19,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:57:19,956 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 6 states. [2020-10-28 17:57:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:21,308 INFO L93 Difference]: Finished difference Result 292 states and 465 transitions. [2020-10-28 17:57:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:57:21,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 17:57:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:21,323 INFO L225 Difference]: With dead ends: 292 [2020-10-28 17:57:21,323 INFO L226 Difference]: Without dead ends: 184 [2020-10-28 17:57:21,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-28 17:57:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-28 17:57:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 17:57:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 271 transitions. [2020-10-28 17:57:21,398 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 271 transitions. Word has length 66 [2020-10-28 17:57:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:21,398 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 271 transitions. [2020-10-28 17:57:21,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:57:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 271 transitions. [2020-10-28 17:57:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:57:21,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:21,406 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] [2020-10-28 17:57:21,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:57:21,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:21,411 INFO L82 PathProgramCache]: Analyzing trace with hash 108908707, now seen corresponding path program 1 times [2020-10-28 17:57:21,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:21,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80030383] [2020-10-28 17:57:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:22,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:57:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-28 17:57:22,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:22,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:57:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:57:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:57:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:22,817 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:22,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:22,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:22,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:57:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:22,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:22,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:22,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:57:22,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 17:57:22,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:22,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:57:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:57:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:23,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:23,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:23,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:23,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:23,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:23,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:57:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:23,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:57:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:23,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:23,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:23,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:57:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:23,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:23,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:57:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:23,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:23,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:23,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:23,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:23,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:23,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:23,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:23,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:23,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:23,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:23,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80030383] [2020-10-28 17:57:23,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:23,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:57:23,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419643550] [2020-10-28 17:57:23,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:57:23,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:23,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:57:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:57:23,311 INFO L87 Difference]: Start difference. First operand 169 states and 271 transitions. Second operand 12 states. [2020-10-28 17:57:24,106 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:57:24,500 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:57:24,986 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:25,353 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:27,496 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2020-10-28 17:57:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:57:27,497 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-28 17:57:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:27,500 INFO L225 Difference]: With dead ends: 287 [2020-10-28 17:57:27,500 INFO L226 Difference]: Without dead ends: 184 [2020-10-28 17:57:27,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-28 17:57:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-28 17:57:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 17:57:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 241 transitions. [2020-10-28 17:57:27,534 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 241 transitions. Word has length 66 [2020-10-28 17:57:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:27,535 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 241 transitions. [2020-10-28 17:57:27,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:57:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 241 transitions. [2020-10-28 17:57:27,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:57:27,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:27,539 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] [2020-10-28 17:57:27,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:57:27,540 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:27,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1049922032, now seen corresponding path program 1 times [2020-10-28 17:57:27,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:27,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852044326] [2020-10-28 17:57:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:27,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:32,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 17:57:32,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:57:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 17:57:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:32,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:57:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:57:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:32,982 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:33,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:57:33,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:33,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:33,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 17:57:33,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:57:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:57:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:33,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:33,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:57:33,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:57:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:33,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:57:33,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:57:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:57:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:33,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:33,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:33,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852044326] [2020-10-28 17:57:33,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:33,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:33,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548211000] [2020-10-28 17:57:33,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:33,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:33,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:33,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:33,482 INFO L87 Difference]: Start difference. First operand 169 states and 241 transitions. Second operand 9 states. [2020-10-28 17:57:33,847 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:36,899 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:57:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:37,224 INFO L93 Difference]: Finished difference Result 390 states and 584 transitions. [2020-10-28 17:57:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:57:37,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-28 17:57:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:37,236 INFO L225 Difference]: With dead ends: 390 [2020-10-28 17:57:37,237 INFO L226 Difference]: Without dead ends: 293 [2020-10-28 17:57:37,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:37,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-28 17:57:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-10-28 17:57:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-28 17:57:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 378 transitions. [2020-10-28 17:57:37,321 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 378 transitions. Word has length 95 [2020-10-28 17:57:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:37,322 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 378 transitions. [2020-10-28 17:57:37,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 378 transitions. [2020-10-28 17:57:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 17:57:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:37,339 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] [2020-10-28 17:57:37,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:57:37,340 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:37,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash -910445829, now seen corresponding path program 1 times [2020-10-28 17:57:37,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:37,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346393632] [2020-10-28 17:57:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:42,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:42,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 17:57:42,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:57:42,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:57:42,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:42,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 17:57:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:42,820 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:42,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:57:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:42,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:42,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:42,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:42,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:42,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:57:42,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:42,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:57:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:43,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:43,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:43,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:43,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:43,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:43,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:43,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:43,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:43,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:43,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:43,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:57:43,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:43,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:43,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:57:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:57:43,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:43,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:57:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:57:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:57:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:43,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:43,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:43,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346393632] [2020-10-28 17:57:43,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:43,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:43,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436373181] [2020-10-28 17:57:43,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:43,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:43,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:43,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:43,269 INFO L87 Difference]: Start difference. First operand 257 states and 378 transitions. Second operand 9 states. [2020-10-28 17:57:43,587 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:43,974 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:57:44,690 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:57:45,057 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:57:46,322 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:50,013 INFO L93 Difference]: Finished difference Result 1003 states and 1498 transitions. [2020-10-28 17:57:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:57:50,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-28 17:57:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:50,023 INFO L225 Difference]: With dead ends: 1003 [2020-10-28 17:57:50,023 INFO L226 Difference]: Without dead ends: 772 [2020-10-28 17:57:50,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:57:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-10-28 17:57:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 690. [2020-10-28 17:57:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-28 17:57:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1016 transitions. [2020-10-28 17:57:50,127 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1016 transitions. Word has length 97 [2020-10-28 17:57:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:50,128 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1016 transitions. [2020-10-28 17:57:50,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1016 transitions. [2020-10-28 17:57:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:57:50,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:50,131 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] [2020-10-28 17:57:50,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:57:50,131 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2102978804, now seen corresponding path program 1 times [2020-10-28 17:57:50,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:50,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136680937] [2020-10-28 17:57:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:50,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:57:55,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:57:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:57:55,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 17:57:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:55,552 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:55,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:57:55,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:57:55,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:57:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:55,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:55,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:57:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:57:55,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:57:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:57:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:57:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:57:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:55,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:55,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:55,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:55,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:55,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:56,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136680937] [2020-10-28 17:57:56,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:56,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:56,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711381574] [2020-10-28 17:57:56,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:56,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:56,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:56,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:56,003 INFO L87 Difference]: Start difference. First operand 690 states and 1016 transitions. Second operand 9 states. [2020-10-28 17:57:56,353 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:56,746 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:57:57,222 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:57:57,865 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:57:58,942 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:02,595 INFO L93 Difference]: Finished difference Result 2687 states and 3993 transitions. [2020-10-28 17:58:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:58:02,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-28 17:58:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:02,609 INFO L225 Difference]: With dead ends: 2687 [2020-10-28 17:58:02,609 INFO L226 Difference]: Without dead ends: 2054 [2020-10-28 17:58:02,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:58:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2020-10-28 17:58:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1850. [2020-10-28 17:58:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-10-28 17:58:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2696 transitions. [2020-10-28 17:58:02,773 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2696 transitions. Word has length 98 [2020-10-28 17:58:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:02,774 INFO L481 AbstractCegarLoop]: Abstraction has 1850 states and 2696 transitions. [2020-10-28 17:58:02,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2696 transitions. [2020-10-28 17:58:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:58:02,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:02,780 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] [2020-10-28 17:58:02,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:58:02,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:02,781 INFO L82 PathProgramCache]: Analyzing trace with hash 57920876, now seen corresponding path program 1 times [2020-10-28 17:58:02,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:02,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833292512] [2020-10-28 17:58:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:03,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:58:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:58:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:58:07,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 17:58:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,168 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:08,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:58:08,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:58:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:58:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:08,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:08,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:08,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:58:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:08,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:08,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:08,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:58:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:58:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:58:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:58:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:08,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:08,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:08,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:08,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833292512] [2020-10-28 17:58:08,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:08,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:08,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845196241] [2020-10-28 17:58:08,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:08,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:08,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:08,511 INFO L87 Difference]: Start difference. First operand 1850 states and 2696 transitions. Second operand 9 states. [2020-10-28 17:58:08,869 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:09,208 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:58:09,621 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:09,984 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:10,905 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:13,407 INFO L93 Difference]: Finished difference Result 5570 states and 8242 transitions. [2020-10-28 17:58:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:58:13,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-28 17:58:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:13,432 INFO L225 Difference]: With dead ends: 5570 [2020-10-28 17:58:13,432 INFO L226 Difference]: Without dead ends: 3752 [2020-10-28 17:58:13,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:58:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2020-10-28 17:58:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3412. [2020-10-28 17:58:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2020-10-28 17:58:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4924 transitions. [2020-10-28 17:58:13,765 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4924 transitions. Word has length 98 [2020-10-28 17:58:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:13,767 INFO L481 AbstractCegarLoop]: Abstraction has 3412 states and 4924 transitions. [2020-10-28 17:58:13,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4924 transitions. [2020-10-28 17:58:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:58:13,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:13,776 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] [2020-10-28 17:58:13,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:58:13,777 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:13,777 INFO L82 PathProgramCache]: Analyzing trace with hash -221488957, now seen corresponding path program 1 times [2020-10-28 17:58:13,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:13,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929774265] [2020-10-28 17:58:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:58:18,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:58:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:58:18,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 17:58:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,229 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:19,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:19,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:58:19,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:19,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:58:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:58:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 17:58:19,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:58:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:58:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:19,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:19,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:58:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:58:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:19,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:58:19,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:19,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 17:58:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:19,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:19,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:19,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:58:19,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:58:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:19,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:19,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:19,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929774265] [2020-10-28 17:58:19,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:19,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:58:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611483999] [2020-10-28 17:58:19,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:58:19,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:19,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:58:19,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:58:19,812 INFO L87 Difference]: Start difference. First operand 3412 states and 4924 transitions. Second operand 10 states. [2020-10-28 17:58:20,166 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:20,590 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:21,282 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:21,714 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:58:22,174 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:58:22,539 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:58:22,966 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:58:23,365 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:58:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:28,847 INFO L93 Difference]: Finished difference Result 6742 states and 9661 transitions. [2020-10-28 17:58:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:58:28,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-28 17:58:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:28,871 INFO L225 Difference]: With dead ends: 6742 [2020-10-28 17:58:28,871 INFO L226 Difference]: Without dead ends: 3371 [2020-10-28 17:58:28,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:58:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2020-10-28 17:58:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2980. [2020-10-28 17:58:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2980 states. [2020-10-28 17:58:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4249 transitions. [2020-10-28 17:58:29,158 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4249 transitions. Word has length 99 [2020-10-28 17:58:29,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:29,158 INFO L481 AbstractCegarLoop]: Abstraction has 2980 states and 4249 transitions. [2020-10-28 17:58:29,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:58:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4249 transitions. [2020-10-28 17:58:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:58:29,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:29,166 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] [2020-10-28 17:58:29,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:58:29,166 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash 45719456, now seen corresponding path program 1 times [2020-10-28 17:58:29,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:29,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602924209] [2020-10-28 17:58:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:58:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 17:58:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,590 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:34,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:34,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:58:34,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:58:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:34,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:34,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:34,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:58:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:34,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:58:34,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:58:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:58:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:58:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:34,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:34,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602924209] [2020-10-28 17:58:34,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:34,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:34,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651416193] [2020-10-28 17:58:34,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:34,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:34,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:34,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:34,912 INFO L87 Difference]: Start difference. First operand 2980 states and 4249 transitions. Second operand 9 states. [2020-10-28 17:58:35,254 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:38,194 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:58:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:38,488 INFO L93 Difference]: Finished difference Result 6526 states and 9582 transitions. [2020-10-28 17:58:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:58:38,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-28 17:58:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:38,517 INFO L225 Difference]: With dead ends: 6526 [2020-10-28 17:58:38,517 INFO L226 Difference]: Without dead ends: 4616 [2020-10-28 17:58:38,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:58:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2020-10-28 17:58:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4117. [2020-10-28 17:58:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4117 states. [2020-10-28 17:58:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5924 transitions. [2020-10-28 17:58:38,868 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5924 transitions. Word has length 99 [2020-10-28 17:58:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:38,868 INFO L481 AbstractCegarLoop]: Abstraction has 4117 states and 5924 transitions. [2020-10-28 17:58:38,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5924 transitions. [2020-10-28 17:58:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:58:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:38,877 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] [2020-10-28 17:58:38,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:58:38,877 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash 938788826, now seen corresponding path program 1 times [2020-10-28 17:58:38,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:38,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038972810] [2020-10-28 17:58:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:43,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:43,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:58:43,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:58:43,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:58:43,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:43,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:43,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:43,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:43,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 17:58:43,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:44,335 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:44,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:58:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:58:44,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:58:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 17:58:44,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:58:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:58:44,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:44,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:58:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:44,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:58:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:44,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:44,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:58:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:44,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:58:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:58:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:44,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:58:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:44,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:44,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038972810] [2020-10-28 17:58:44,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:44,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:58:44,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836904805] [2020-10-28 17:58:44,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:58:44,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:44,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:58:44,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:58:44,910 INFO L87 Difference]: Start difference. First operand 4117 states and 5924 transitions. Second operand 10 states. [2020-10-28 17:58:45,398 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:45,891 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:46,250 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:46,621 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:58:46,990 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:47,392 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:58:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:53,137 INFO L93 Difference]: Finished difference Result 10566 states and 15564 transitions. [2020-10-28 17:58:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:58:53,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-28 17:58:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:53,175 INFO L225 Difference]: With dead ends: 10566 [2020-10-28 17:58:53,175 INFO L226 Difference]: Without dead ends: 7028 [2020-10-28 17:58:53,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:58:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2020-10-28 17:58:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 6300. [2020-10-28 17:58:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2020-10-28 17:58:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 9130 transitions. [2020-10-28 17:58:53,732 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 9130 transitions. Word has length 101 [2020-10-28 17:58:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:53,732 INFO L481 AbstractCegarLoop]: Abstraction has 6300 states and 9130 transitions. [2020-10-28 17:58:53,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:58:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 9130 transitions. [2020-10-28 17:58:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:58:53,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:53,745 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] [2020-10-28 17:58:53,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:58:53,746 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:53,746 INFO L82 PathProgramCache]: Analyzing trace with hash -735416415, now seen corresponding path program 1 times [2020-10-28 17:58:53,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:53,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240609693] [2020-10-28 17:58:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:58,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:58,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 17:58:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,117 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:59,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:59,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:59,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:58:59,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:59,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:58:59,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:58:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:59,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:58:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:58:59,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:58:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:59,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:58:59,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:58:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:59,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:59,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240609693] [2020-10-28 17:58:59,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:59,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:59,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817161091] [2020-10-28 17:58:59,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:59,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:59,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:59,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:59,511 INFO L87 Difference]: Start difference. First operand 6300 states and 9130 transitions. Second operand 9 states. [2020-10-28 17:58:59,894 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:00,252 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:59:00,685 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:59:01,556 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:59:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:05,624 INFO L93 Difference]: Finished difference Result 15595 states and 22972 transitions. [2020-10-28 17:59:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:59:05,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-28 17:59:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:05,673 INFO L225 Difference]: With dead ends: 15595 [2020-10-28 17:59:05,674 INFO L226 Difference]: Without dead ends: 10398 [2020-10-28 17:59:05,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:59:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10398 states. [2020-10-28 17:59:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10398 to 9385. [2020-10-28 17:59:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9385 states. [2020-10-28 17:59:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 13486 transitions. [2020-10-28 17:59:06,613 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 13486 transitions. Word has length 102 [2020-10-28 17:59:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:06,614 INFO L481 AbstractCegarLoop]: Abstraction has 9385 states and 13486 transitions. [2020-10-28 17:59:06,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 13486 transitions. [2020-10-28 17:59:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:59:06,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:06,630 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] [2020-10-28 17:59:06,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:59:06,631 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:06,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1189887355, now seen corresponding path program 1 times [2020-10-28 17:59:06,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:06,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917224666] [2020-10-28 17:59:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:11,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:59:11,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:59:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:59:11,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:11,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 17:59:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:11,990 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:59:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:59:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:59:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 17:59:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:59:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:59:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:59:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:12,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:12,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:12,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:59:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:12,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:59:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:59:12,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:12,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:59:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:59:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:59:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:12,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:12,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:12,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:12,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917224666] [2020-10-28 17:59:12,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:12,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:59:12,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792441196] [2020-10-28 17:59:12,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:59:12,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:12,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:59:12,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:59:12,430 INFO L87 Difference]: Start difference. First operand 9385 states and 13486 transitions. Second operand 10 states. [2020-10-28 17:59:12,789 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:13,286 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:59:13,717 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:59:14,076 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:59:14,455 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:59:14,865 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:59:15,271 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:59:15,685 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:59:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:21,894 INFO L93 Difference]: Finished difference Result 21592 states and 30920 transitions. [2020-10-28 17:59:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:59:21,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-28 17:59:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:21,954 INFO L225 Difference]: With dead ends: 21592 [2020-10-28 17:59:21,955 INFO L226 Difference]: Without dead ends: 12628 [2020-10-28 17:59:21,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:59:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12628 states. [2020-10-28 17:59:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12628 to 11264. [2020-10-28 17:59:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11264 states. [2020-10-28 17:59:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11264 states to 11264 states and 16206 transitions. [2020-10-28 17:59:22,987 INFO L78 Accepts]: Start accepts. Automaton has 11264 states and 16206 transitions. Word has length 102 [2020-10-28 17:59:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:22,987 INFO L481 AbstractCegarLoop]: Abstraction has 11264 states and 16206 transitions. [2020-10-28 17:59:22,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:59:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 11264 states and 16206 transitions. [2020-10-28 17:59:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:59:23,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:23,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:23,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:59:23,011 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:23,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1185913027, now seen corresponding path program 1 times [2020-10-28 17:59:23,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:23,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519290603] [2020-10-28 17:59:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:24,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 17:59:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,399 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:28,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:59:28,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:59:28,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 17:59:28,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:59:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:59:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:28,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:28,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:59:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:28,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:59:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:59:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:59:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:59:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:59:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:59:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519290603] [2020-10-28 17:59:28,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:28,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:28,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387934050] [2020-10-28 17:59:28,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:28,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:28,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:28,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:28,774 INFO L87 Difference]: Start difference. First operand 11264 states and 16206 transitions. Second operand 9 states. [2020-10-28 17:59:29,159 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:29,555 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:59:29,990 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:59:31,020 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:59:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:35,779 INFO L93 Difference]: Finished difference Result 31484 states and 45855 transitions. [2020-10-28 17:59:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:59:35,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:59:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:35,868 INFO L225 Difference]: With dead ends: 31484 [2020-10-28 17:59:35,869 INFO L226 Difference]: Without dead ends: 22161 [2020-10-28 17:59:35,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:59:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22161 states. [2020-10-28 17:59:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22161 to 20191. [2020-10-28 17:59:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20191 states. [2020-10-28 17:59:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20191 states to 20191 states and 28789 transitions. [2020-10-28 17:59:37,969 INFO L78 Accepts]: Start accepts. Automaton has 20191 states and 28789 transitions. Word has length 103 [2020-10-28 17:59:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:37,970 INFO L481 AbstractCegarLoop]: Abstraction has 20191 states and 28789 transitions. [2020-10-28 17:59:37,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 20191 states and 28789 transitions. [2020-10-28 17:59:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:59:38,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:38,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:38,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:59:38,009 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash 628095824, now seen corresponding path program 1 times [2020-10-28 17:59:38,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:38,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970930058] [2020-10-28 17:59:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:59:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:59:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:59:43,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:59:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 17:59:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:59:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,401 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:43,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:59:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:59:43,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:59:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:59:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:59:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:43,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:59:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:59:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:59:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:59:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:59:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:59:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:59:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:59:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:43,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970930058] [2020-10-28 17:59:43,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587697517] [2020-10-28 17:59:43,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:43,709 INFO L87 Difference]: Start difference. First operand 20191 states and 28789 transitions. Second operand 9 states. [2020-10-28 17:59:44,580 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:47,370 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 17:59:48,156 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:59:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:48,699 INFO L93 Difference]: Finished difference Result 36729 states and 52813 transitions. [2020-10-28 17:59:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:59:48,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:59:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:48,808 INFO L225 Difference]: With dead ends: 36729 [2020-10-28 17:59:48,809 INFO L226 Difference]: Without dead ends: 26809 [2020-10-28 17:59:48,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:59:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26809 states. [2020-10-28 17:59:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26809 to 24336. [2020-10-28 17:59:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24336 states. [2020-10-28 17:59:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24336 states to 24336 states and 34697 transitions. [2020-10-28 17:59:50,705 INFO L78 Accepts]: Start accepts. Automaton has 24336 states and 34697 transitions. Word has length 103 [2020-10-28 17:59:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:50,706 INFO L481 AbstractCegarLoop]: Abstraction has 24336 states and 34697 transitions. [2020-10-28 17:59:50,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24336 states and 34697 transitions. [2020-10-28 17:59:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:59:50,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:50,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:50,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:59:50,734 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash -306115777, now seen corresponding path program 1 times [2020-10-28 17:59:50,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:50,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814232131] [2020-10-28 17:59:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:55,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:55,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:59:55,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:59:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:59:55,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:55,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 17:59:55,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,259 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:59:56,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:59:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:59:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:59:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:59:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:56,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:59:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:56,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:59:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:56,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:59:56,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:59:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:59:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:59:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:56,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814232131] [2020-10-28 17:59:56,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:56,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:56,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173881563] [2020-10-28 17:59:56,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:56,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:56,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:56,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:56,624 INFO L87 Difference]: Start difference. First operand 24336 states and 34697 transitions. Second operand 9 states. [2020-10-28 17:59:57,005 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:57,418 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:59:57,842 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:59:58,878 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:00:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:03,872 INFO L93 Difference]: Finished difference Result 35637 states and 50626 transitions. [2020-10-28 18:00:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:00:03,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 18:00:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:03,979 INFO L225 Difference]: With dead ends: 35637 [2020-10-28 18:00:03,979 INFO L226 Difference]: Without dead ends: 28196 [2020-10-28 18:00:04,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 18:00:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28196 states. [2020-10-28 18:00:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28196 to 26180. [2020-10-28 18:00:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26180 states. [2020-10-28 18:00:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26180 states to 26180 states and 37118 transitions. [2020-10-28 18:00:05,916 INFO L78 Accepts]: Start accepts. Automaton has 26180 states and 37118 transitions. Word has length 103 [2020-10-28 18:00:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:05,916 INFO L481 AbstractCegarLoop]: Abstraction has 26180 states and 37118 transitions. [2020-10-28 18:00:05,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 18:00:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 26180 states and 37118 transitions. [2020-10-28 18:00:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:00:05,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:05,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:05,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:00:05,938 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:05,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:05,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1002191032, now seen corresponding path program 1 times [2020-10-28 18:00:05,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:05,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405432364] [2020-10-28 18:00:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:10,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 18:00:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,294 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:00:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:11,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:00:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 18:00:11,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:00:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:00:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 18:00:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:11,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:00:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 18:00:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:00:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 18:00:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 18:00:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 18:00:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 18:00:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 18:00:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:11,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405432364] [2020-10-28 18:00:11,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:11,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:00:11,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840649489] [2020-10-28 18:00:11,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 18:00:11,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:11,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 18:00:11,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:00:11,578 INFO L87 Difference]: Start difference. First operand 26180 states and 37118 transitions. Second operand 9 states. [2020-10-28 18:00:11,924 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:00:13,354 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-28 18:00:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:15,900 INFO L93 Difference]: Finished difference Result 41407 states and 58958 transitions. [2020-10-28 18:00:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:00:15,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-28 18:00:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:16,018 INFO L225 Difference]: With dead ends: 41407 [2020-10-28 18:00:16,019 INFO L226 Difference]: Without dead ends: 26756 [2020-10-28 18:00:16,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:00:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26756 states. [2020-10-28 18:00:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26756 to 23936. [2020-10-28 18:00:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23936 states. [2020-10-28 18:00:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23936 states to 23936 states and 33528 transitions. [2020-10-28 18:00:18,156 INFO L78 Accepts]: Start accepts. Automaton has 23936 states and 33528 transitions. Word has length 104 [2020-10-28 18:00:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:18,156 INFO L481 AbstractCegarLoop]: Abstraction has 23936 states and 33528 transitions. [2020-10-28 18:00:18,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 18:00:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23936 states and 33528 transitions. [2020-10-28 18:00:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:00:18,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:18,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:18,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:00:18,167 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:18,168 INFO L82 PathProgramCache]: Analyzing trace with hash 456253266, now seen corresponding path program 1 times [2020-10-28 18:00:18,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:18,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818860864] [2020-10-28 18:00:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2499 [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 18:00:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 18:00:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,049 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:00:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:00:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 18:00:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:21,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:21,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 18:00:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 18:00:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 18:00:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 18:00:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:00:21,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 18:00:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:21,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818860864] [2020-10-28 18:00:21,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:21,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:00:21,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950982497] [2020-10-28 18:00:21,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 18:00:21,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:21,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 18:00:21,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:00:21,344 INFO L87 Difference]: Start difference. First operand 23936 states and 33528 transitions. Second operand 9 states. [2020-10-28 18:00:21,738 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:00:24,566 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:00:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:27,593 INFO L93 Difference]: Finished difference Result 58970 states and 83449 transitions. [2020-10-28 18:00:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:00:27,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-28 18:00:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:27,728 INFO L225 Difference]: With dead ends: 58970 [2020-10-28 18:00:27,728 INFO L226 Difference]: Without dead ends: 39052 [2020-10-28 18:00:27,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:00:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39052 states. [2020-10-28 18:00:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39052 to 35386. [2020-10-28 18:00:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35386 states. [2020-10-28 18:00:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35386 states to 35386 states and 48141 transitions. [2020-10-28 18:00:30,762 INFO L78 Accepts]: Start accepts. Automaton has 35386 states and 48141 transitions. Word has length 106 [2020-10-28 18:00:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:30,762 INFO L481 AbstractCegarLoop]: Abstraction has 35386 states and 48141 transitions. [2020-10-28 18:00:30,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 18:00:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 35386 states and 48141 transitions. [2020-10-28 18:00:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 18:00:30,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:30,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:30,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:00:30,774 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:30,774 INFO L82 PathProgramCache]: Analyzing trace with hash -564823921, now seen corresponding path program 1 times [2020-10-28 18:00:30,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:30,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628417510] [2020-10-28 18:00:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking...