/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:47:38,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:47:38,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:47:38,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:47:38,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:47:38,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:47:38,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:47:38,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:47:38,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:47:38,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:47:38,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:47:38,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:47:38,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:47:38,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:47:38,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:47:38,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:47:38,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:47:38,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:47:38,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:47:38,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:47:38,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:47:38,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:47:38,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:47:38,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:47:38,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:47:38,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:47:38,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:47:38,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:47:38,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:47:38,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:47:38,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:47:38,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:47:38,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:47:38,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:47:38,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:47:38,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:47:38,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:47:38,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:47:38,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:47:38,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:47:38,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:47:38,134 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 18:47:38,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:47:38,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:47:38,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:47:38,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:47:38,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:47:38,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:47:38,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:47:38,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:47:38,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:47:38,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:47:38,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:47:38,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:47:38,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:47:38,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:47:38,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:47:38,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:47:38,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:47:38,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:47:38,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:47:38,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:47:38,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:47:38,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:47:38,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:47:38,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:47:38,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:47:38,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:47:38,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:47:38,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:47:38,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:47:38,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:47:38,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:47:38,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:47:38,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:47:38,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:47:38,637 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:47:38,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-28 18:47:38,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f45da6c9/b5802eb042f246f6acefe53843ba716e/FLAG3db551e63 [2020-10-28 18:47:39,482 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:47:39,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-28 18:47:39,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f45da6c9/b5802eb042f246f6acefe53843ba716e/FLAG3db551e63 [2020-10-28 18:47:39,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f45da6c9/b5802eb042f246f6acefe53843ba716e [2020-10-28 18:47:39,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:47:39,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:47:39,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:47:39,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:47:39,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:47:39,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:47:39" (1/1) ... [2020-10-28 18:47:39,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc505c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:39, skipping insertion in model container [2020-10-28 18:47:39,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:47:39" (1/1) ... [2020-10-28 18:47:39,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:47:39,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:47:40,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:47:40,160 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:47:40,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:47:40,348 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:47:40,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40 WrapperNode [2020-10-28 18:47:40,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:47:40,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:47:40,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:47:40,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:47:40,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (1/1) ... [2020-10-28 18:47:40,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:47:40,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:47:40,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:47:40,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:47:40,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (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 18:47:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:47:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:47:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:47:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:47:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:47:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:47:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:47:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:47:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:47:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:47:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:47:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:47:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:47:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:47:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:47:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 18:47:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-28 18:47:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:47:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:47:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:47:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:47:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:47:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:47:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:47:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:47:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:47:41,575 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:47:41,576 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:47:41,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:47:41 BoogieIcfgContainer [2020-10-28 18:47:41,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:47:41,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:47:41,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:47:41,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:47:41,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:47:39" (1/3) ... [2020-10-28 18:47:41,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6676ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:47:41, skipping insertion in model container [2020-10-28 18:47:41,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:40" (2/3) ... [2020-10-28 18:47:41,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6676ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:47:41, skipping insertion in model container [2020-10-28 18:47:41,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:47:41" (3/3) ... [2020-10-28 18:47:41,586 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-28 18:47:41,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:47:41,603 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:47:41,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:47:41,643 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:47:41,643 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:47:41,643 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:47:41,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:47:41,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:47:41,644 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:47:41,644 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:47:41,644 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:47:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-28 18:47:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:47:41,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:41,678 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 18:47:41,679 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1569647866, now seen corresponding path program 1 times [2020-10-28 18:47:41,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:41,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415189257] [2020-10-28 18:47:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:42,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:47:47,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:47:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:47:47,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:47,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 18:47:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 18:47:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:47:47,648 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:47:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 18:47:47,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:47,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:47:47,786 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 18:47:47,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415189257] [2020-10-28 18:47:47,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:47,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:47:47,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885108199] [2020-10-28 18:47:47,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:47:47,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:47:47,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:47:47,824 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-10-28 18:47:48,281 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:47:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:49,532 INFO L93 Difference]: Finished difference Result 348 states and 569 transitions. [2020-10-28 18:47:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:47:49,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-28 18:47:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:49,550 INFO L225 Difference]: With dead ends: 348 [2020-10-28 18:47:49,550 INFO L226 Difference]: Without dead ends: 242 [2020-10-28 18:47:49,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:47:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-28 18:47:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 239. [2020-10-28 18:47:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-28 18:47:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 340 transitions. [2020-10-28 18:47:49,632 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 340 transitions. Word has length 106 [2020-10-28 18:47:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:49,634 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 340 transitions. [2020-10-28 18:47:49,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:47:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 340 transitions. [2020-10-28 18:47:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 18:47:49,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:49,645 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] [2020-10-28 18:47:49,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:47:49,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -13491458, now seen corresponding path program 1 times [2020-10-28 18:47:49,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:49,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359305521] [2020-10-28 18:47:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:49,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:54,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:54,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 18:47:54,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:47:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 18:47:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:47:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 18:47:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:55,149 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:47:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:55,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:47:55,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:55,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:47:55,264 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 18:47:55,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359305521] [2020-10-28 18:47:55,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:55,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:47:55,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244847531] [2020-10-28 18:47:55,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:47:55,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:47:55,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:47:55,268 INFO L87 Difference]: Start difference. First operand 239 states and 340 transitions. Second operand 4 states. [2020-10-28 18:47:55,609 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:47:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:56,445 INFO L93 Difference]: Finished difference Result 565 states and 858 transitions. [2020-10-28 18:47:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:47:56,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-28 18:47:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:56,453 INFO L225 Difference]: With dead ends: 565 [2020-10-28 18:47:56,454 INFO L226 Difference]: Without dead ends: 394 [2020-10-28 18:47:56,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:47:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-28 18:47:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 391. [2020-10-28 18:47:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-28 18:47:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 582 transitions. [2020-10-28 18:47:56,512 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 582 transitions. Word has length 107 [2020-10-28 18:47:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:56,513 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 582 transitions. [2020-10-28 18:47:56,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:47:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 582 transitions. [2020-10-28 18:47:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 18:47:56,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:56,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:56,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:47:56,516 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:56,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1469176728, now seen corresponding path program 1 times [2020-10-28 18:47:56,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:56,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563736638] [2020-10-28 18:47:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:01,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:01,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 18:48:01,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:48:01,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:48:01,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:01,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 18:48:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 18:48:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:48:01,934 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:01,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:48:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:01,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:02,019 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 18:48:02,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563736638] [2020-10-28 18:48:02,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:02,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:02,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911231499] [2020-10-28 18:48:02,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:02,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:02,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:02,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:02,026 INFO L87 Difference]: Start difference. First operand 391 states and 582 transitions. Second operand 4 states. [2020-10-28 18:48:02,389 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:48:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:03,323 INFO L93 Difference]: Finished difference Result 1005 states and 1558 transitions. [2020-10-28 18:48:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:03,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-28 18:48:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:03,333 INFO L225 Difference]: With dead ends: 1005 [2020-10-28 18:48:03,333 INFO L226 Difference]: Without dead ends: 682 [2020-10-28 18:48:03,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-28 18:48:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 679. [2020-10-28 18:48:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-28 18:48:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1038 transitions. [2020-10-28 18:48:03,426 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1038 transitions. Word has length 108 [2020-10-28 18:48:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:03,429 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 1038 transitions. [2020-10-28 18:48:03,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1038 transitions. [2020-10-28 18:48:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 18:48:03,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:03,437 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] [2020-10-28 18:48:03,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:48:03,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:03,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:03,440 INFO L82 PathProgramCache]: Analyzing trace with hash -405505578, now seen corresponding path program 1 times [2020-10-28 18:48:03,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:03,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846713251] [2020-10-28 18:48:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 18:48:08,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:48:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:48:08,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:08,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 18:48:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 18:48:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:08,961 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:08,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:08,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:48:08,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:08,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:09,059 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 18:48:09,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846713251] [2020-10-28 18:48:09,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:09,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:09,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929427416] [2020-10-28 18:48:09,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:09,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:09,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:09,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:09,063 INFO L87 Difference]: Start difference. First operand 679 states and 1038 transitions. Second operand 4 states. [2020-10-28 18:48:09,385 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:48:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:10,243 INFO L93 Difference]: Finished difference Result 1837 states and 2874 transitions. [2020-10-28 18:48:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:10,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-28 18:48:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:10,256 INFO L225 Difference]: With dead ends: 1837 [2020-10-28 18:48:10,256 INFO L226 Difference]: Without dead ends: 1226 [2020-10-28 18:48:10,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-10-28 18:48:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1223. [2020-10-28 18:48:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1223 states. [2020-10-28 18:48:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1894 transitions. [2020-10-28 18:48:10,332 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1894 transitions. Word has length 109 [2020-10-28 18:48:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:10,334 INFO L481 AbstractCegarLoop]: Abstraction has 1223 states and 1894 transitions. [2020-10-28 18:48:10,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1894 transitions. [2020-10-28 18:48:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 18:48:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:10,337 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 18:48:10,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:48:10,337 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1300262862, now seen corresponding path program 1 times [2020-10-28 18:48:10,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:10,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666586504] [2020-10-28 18:48:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 18:48:15,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:48:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:48:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:15,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 18:48:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 18:48:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:15,736 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:15,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:15,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:15,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:48:15,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:15,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:15,800 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 18:48:15,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666586504] [2020-10-28 18:48:15,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:15,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:15,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807711478] [2020-10-28 18:48:15,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:15,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:15,803 INFO L87 Difference]: Start difference. First operand 1223 states and 1894 transitions. Second operand 4 states. [2020-10-28 18:48:16,134 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:48:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:17,069 INFO L93 Difference]: Finished difference Result 3405 states and 5338 transitions. [2020-10-28 18:48:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:17,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-28 18:48:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:17,082 INFO L225 Difference]: With dead ends: 3405 [2020-10-28 18:48:17,082 INFO L226 Difference]: Without dead ends: 2250 [2020-10-28 18:48:17,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-10-28 18:48:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2247. [2020-10-28 18:48:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-10-28 18:48:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3494 transitions. [2020-10-28 18:48:17,209 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3494 transitions. Word has length 110 [2020-10-28 18:48:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:17,210 INFO L481 AbstractCegarLoop]: Abstraction has 2247 states and 3494 transitions. [2020-10-28 18:48:17,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3494 transitions. [2020-10-28 18:48:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 18:48:17,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:17,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:17,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:48:17,212 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:17,213 INFO L82 PathProgramCache]: Analyzing trace with hash 608198898, now seen corresponding path program 1 times [2020-10-28 18:48:17,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:17,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371939996] [2020-10-28 18:48:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:22,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 18:48:22,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:22,619 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:22,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:48:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:22,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:22,681 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 18:48:22,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371939996] [2020-10-28 18:48:22,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:22,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:22,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666883711] [2020-10-28 18:48:22,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:22,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:22,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:22,683 INFO L87 Difference]: Start difference. First operand 2247 states and 3494 transitions. Second operand 4 states. [2020-10-28 18:48:23,021 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:48:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:23,984 INFO L93 Difference]: Finished difference Result 6349 states and 9930 transitions. [2020-10-28 18:48:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:23,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-28 18:48:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:24,008 INFO L225 Difference]: With dead ends: 6349 [2020-10-28 18:48:24,008 INFO L226 Difference]: Without dead ends: 4170 [2020-10-28 18:48:24,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2020-10-28 18:48:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 4167. [2020-10-28 18:48:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-10-28 18:48:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6470 transitions. [2020-10-28 18:48:24,226 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6470 transitions. Word has length 111 [2020-10-28 18:48:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:24,226 INFO L481 AbstractCegarLoop]: Abstraction has 4167 states and 6470 transitions. [2020-10-28 18:48:24,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6470 transitions. [2020-10-28 18:48:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 18:48:24,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:24,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:24,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:48:24,229 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash -841229763, now seen corresponding path program 1 times [2020-10-28 18:48:24,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:24,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488738480] [2020-10-28 18:48:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 18:48:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 18:48:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:29,596 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:29,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:29,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:48:29,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:29,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:29,656 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 18:48:29,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488738480] [2020-10-28 18:48:29,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:29,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:29,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039091526] [2020-10-28 18:48:29,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:29,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:29,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:29,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:29,659 INFO L87 Difference]: Start difference. First operand 4167 states and 6470 transitions. Second operand 4 states. [2020-10-28 18:48:30,043 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:48:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:31,200 INFO L93 Difference]: Finished difference Result 11853 states and 18442 transitions. [2020-10-28 18:48:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:31,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-28 18:48:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:31,241 INFO L225 Difference]: With dead ends: 11853 [2020-10-28 18:48:31,241 INFO L226 Difference]: Without dead ends: 7754 [2020-10-28 18:48:31,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2020-10-28 18:48:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 7751. [2020-10-28 18:48:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7751 states. [2020-10-28 18:48:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7751 states to 7751 states and 11974 transitions. [2020-10-28 18:48:31,631 INFO L78 Accepts]: Start accepts. Automaton has 7751 states and 11974 transitions. Word has length 112 [2020-10-28 18:48:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:31,631 INFO L481 AbstractCegarLoop]: Abstraction has 7751 states and 11974 transitions. [2020-10-28 18:48:31,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7751 states and 11974 transitions. [2020-10-28 18:48:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 18:48:31,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:31,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:31,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:48:31,634 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:31,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1566232358, now seen corresponding path program 1 times [2020-10-28 18:48:31,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:31,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146870879] [2020-10-28 18:48:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:36,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:36,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 18:48:36,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:48:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:48:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:36,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 18:48:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 18:48:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:37,014 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:37,071 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 18:48:37,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146870879] [2020-10-28 18:48:37,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:37,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:48:37,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126730599] [2020-10-28 18:48:37,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:48:37,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:48:37,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:48:37,074 INFO L87 Difference]: Start difference. First operand 7751 states and 11974 transitions. Second operand 4 states. [2020-10-28 18:48:37,408 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:48:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:38,718 INFO L93 Difference]: Finished difference Result 22093 states and 34122 transitions. [2020-10-28 18:48:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:48:38,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-28 18:48:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:38,778 INFO L225 Difference]: With dead ends: 22093 [2020-10-28 18:48:38,778 INFO L226 Difference]: Without dead ends: 14410 [2020-10-28 18:48:38,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:48:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14410 states. [2020-10-28 18:48:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14410 to 14407. [2020-10-28 18:48:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14407 states. [2020-10-28 18:48:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14407 states to 14407 states and 22086 transitions. [2020-10-28 18:48:39,540 INFO L78 Accepts]: Start accepts. Automaton has 14407 states and 22086 transitions. Word has length 113 [2020-10-28 18:48:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:39,541 INFO L481 AbstractCegarLoop]: Abstraction has 14407 states and 22086 transitions. [2020-10-28 18:48:39,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:48:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14407 states and 22086 transitions. [2020-10-28 18:48:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:48:39,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:39,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:39,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:48:39,543 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1178026692, now seen corresponding path program 1 times [2020-10-28 18:48:39,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:39,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024087932] [2020-10-28 18:48:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:40,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:44,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 18:48:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:44,932 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:44,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:44,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:44,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:48:44,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:44,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:44,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:44,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:44,995 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 18:48:44,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024087932] [2020-10-28 18:48:44,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:44,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:44,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541990970] [2020-10-28 18:48:44,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:44,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:44,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:44,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:44,997 INFO L87 Difference]: Start difference. First operand 14407 states and 22086 transitions. Second operand 6 states. [2020-10-28 18:48:45,348 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:48:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:46,664 INFO L93 Difference]: Finished difference Result 28746 states and 44104 transitions. [2020-10-28 18:48:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:48:46,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:48:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:46,700 INFO L225 Difference]: With dead ends: 28746 [2020-10-28 18:48:46,700 INFO L226 Difference]: Without dead ends: 14407 [2020-10-28 18:48:46,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 18:48:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2020-10-28 18:48:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 14407. [2020-10-28 18:48:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14407 states. [2020-10-28 18:48:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14407 states to 14407 states and 21958 transitions. [2020-10-28 18:48:47,500 INFO L78 Accepts]: Start accepts. Automaton has 14407 states and 21958 transitions. Word has length 114 [2020-10-28 18:48:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:47,500 INFO L481 AbstractCegarLoop]: Abstraction has 14407 states and 21958 transitions. [2020-10-28 18:48:47,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 14407 states and 21958 transitions. [2020-10-28 18:48:47,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:48:47,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:47,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:47,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:48:47,503 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:47,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1316208503, now seen corresponding path program 1 times [2020-10-28 18:48:47,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:47,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590080445] [2020-10-28 18:48:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:52,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:48:52,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:48:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:48:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:52,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:48:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:52,924 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:48:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:52,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:52,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:52,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:48:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:52,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:52,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:52,981 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 18:48:52,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590080445] [2020-10-28 18:48:52,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:52,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:52,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954065012] [2020-10-28 18:48:52,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:52,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:52,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:52,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:52,984 INFO L87 Difference]: Start difference. First operand 14407 states and 21958 transitions. Second operand 6 states. [2020-10-28 18:48:53,331 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 18:48:54,446 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:48:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:55,294 INFO L93 Difference]: Finished difference Result 42957 states and 65482 transitions. [2020-10-28 18:48:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:48:55,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:48:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:55,372 INFO L225 Difference]: With dead ends: 42957 [2020-10-28 18:48:55,372 INFO L226 Difference]: Without dead ends: 28618 [2020-10-28 18:48:55,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:48:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28618 states. [2020-10-28 18:48:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28618 to 28615. [2020-10-28 18:48:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28615 states. [2020-10-28 18:48:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28615 states to 28615 states and 43462 transitions. [2020-10-28 18:48:56,702 INFO L78 Accepts]: Start accepts. Automaton has 28615 states and 43462 transitions. Word has length 114 [2020-10-28 18:48:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:56,703 INFO L481 AbstractCegarLoop]: Abstraction has 28615 states and 43462 transitions. [2020-10-28 18:48:56,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28615 states and 43462 transitions. [2020-10-28 18:48:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:48:56,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:56,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:56,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:48:56,704 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash -592035982, now seen corresponding path program 1 times [2020-10-28 18:48:56,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:56,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785683765] [2020-10-28 18:48:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:49:01,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:49:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:49:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:01,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 18:49:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:02,081 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:02,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:02,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 18:49:02,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:02,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:02,272 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 18:49:02,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785683765] [2020-10-28 18:49:02,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:02,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:02,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439709603] [2020-10-28 18:49:02,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:02,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:02,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:02,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:02,275 INFO L87 Difference]: Start difference. First operand 28615 states and 43462 transitions. Second operand 6 states. [2020-10-28 18:49:02,634 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:49:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:04,241 INFO L93 Difference]: Finished difference Result 57162 states and 86856 transitions. [2020-10-28 18:49:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:49:04,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:49:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:04,315 INFO L225 Difference]: With dead ends: 57162 [2020-10-28 18:49:04,315 INFO L226 Difference]: Without dead ends: 28615 [2020-10-28 18:49:04,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 18:49:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28615 states. [2020-10-28 18:49:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28615 to 28615. [2020-10-28 18:49:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28615 states. [2020-10-28 18:49:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28615 states to 28615 states and 43206 transitions. [2020-10-28 18:49:05,892 INFO L78 Accepts]: Start accepts. Automaton has 28615 states and 43206 transitions. Word has length 114 [2020-10-28 18:49:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:05,892 INFO L481 AbstractCegarLoop]: Abstraction has 28615 states and 43206 transitions. [2020-10-28 18:49:05,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 28615 states and 43206 transitions. [2020-10-28 18:49:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:49:05,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:05,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:05,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:49:05,894 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1229613591, now seen corresponding path program 1 times [2020-10-28 18:49:05,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:05,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024113816] [2020-10-28 18:49:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:05,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:10,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:49:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:49:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:49:10,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:10,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:49:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:11,308 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:11,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:11,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 18:49:11,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:11,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:11,377 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 18:49:11,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024113816] [2020-10-28 18:49:11,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:11,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:11,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025773600] [2020-10-28 18:49:11,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:11,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:11,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:11,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:11,380 INFO L87 Difference]: Start difference. First operand 28615 states and 43206 transitions. Second operand 6 states. [2020-10-28 18:49:11,728 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:49:12,951 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:49:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:15,106 INFO L93 Difference]: Finished difference Result 85453 states and 128970 transitions. [2020-10-28 18:49:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:49:15,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:49:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:15,239 INFO L225 Difference]: With dead ends: 85453 [2020-10-28 18:49:15,240 INFO L226 Difference]: Without dead ends: 56906 [2020-10-28 18:49:15,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:49:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56906 states. [2020-10-28 18:49:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56906 to 56903. [2020-10-28 18:49:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56903 states. [2020-10-28 18:49:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56903 states to 56903 states and 85574 transitions. [2020-10-28 18:49:18,813 INFO L78 Accepts]: Start accepts. Automaton has 56903 states and 85574 transitions. Word has length 114 [2020-10-28 18:49:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:18,813 INFO L481 AbstractCegarLoop]: Abstraction has 56903 states and 85574 transitions. [2020-10-28 18:49:18,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 56903 states and 85574 transitions. [2020-10-28 18:49:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:49:18,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:18,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:18,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:49:18,815 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:18,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2064816082, now seen corresponding path program 1 times [2020-10-28 18:49:18,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:18,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567736002] [2020-10-28 18:49:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:23,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:23,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:49:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:24,209 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:24,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:24,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:24,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:49:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:24,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:24,282 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 18:49:24,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567736002] [2020-10-28 18:49:24,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:24,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:24,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130881338] [2020-10-28 18:49:24,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:24,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:24,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:24,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:24,284 INFO L87 Difference]: Start difference. First operand 56903 states and 85574 transitions. Second operand 6 states. [2020-10-28 18:49:24,629 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:49:26,015 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:49:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:31,304 INFO L93 Difference]: Finished difference Result 170061 states and 255562 transitions. [2020-10-28 18:49:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:49:31,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:49:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:31,528 INFO L225 Difference]: With dead ends: 170061 [2020-10-28 18:49:31,529 INFO L226 Difference]: Without dead ends: 113226 [2020-10-28 18:49:31,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:49:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113226 states. [2020-10-28 18:49:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113226 to 113223. [2020-10-28 18:49:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113223 states. [2020-10-28 18:49:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113223 states to 113223 states and 169542 transitions. [2020-10-28 18:49:38,683 INFO L78 Accepts]: Start accepts. Automaton has 113223 states and 169542 transitions. Word has length 114 [2020-10-28 18:49:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:38,684 INFO L481 AbstractCegarLoop]: Abstraction has 113223 states and 169542 transitions. [2020-10-28 18:49:38,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 113223 states and 169542 transitions. [2020-10-28 18:49:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:49:38,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:38,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:38,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:49:38,685 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:38,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1877455795, now seen corresponding path program 1 times [2020-10-28 18:49:38,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:38,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770814947] [2020-10-28 18:49:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:40,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:49:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 18:49:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1996 [2020-10-28 18:49:40,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:40,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:49:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:41,074 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:41,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:41,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:41,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:41,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:49:41,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:41,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:41,264 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 18:49:41,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770814947] [2020-10-28 18:49:41,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:41,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:41,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574040803] [2020-10-28 18:49:41,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:41,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:41,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:41,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:41,266 INFO L87 Difference]: Start difference. First operand 113223 states and 169542 transitions. Second operand 6 states. [2020-10-28 18:49:41,592 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:49:43,280 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:49:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:55,386 INFO L93 Difference]: Finished difference Result 338509 states and 506442 transitions. [2020-10-28 18:49:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:49:55,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:49:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:55,798 INFO L225 Difference]: With dead ends: 338509 [2020-10-28 18:49:55,798 INFO L226 Difference]: Without dead ends: 225354 [2020-10-28 18:49:55,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:49:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225354 states. [2020-10-28 18:50:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225354 to 225351. [2020-10-28 18:50:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225351 states. [2020-10-28 18:50:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225351 states to 225351 states and 335942 transitions. [2020-10-28 18:50:10,605 INFO L78 Accepts]: Start accepts. Automaton has 225351 states and 335942 transitions. Word has length 114 [2020-10-28 18:50:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:10,605 INFO L481 AbstractCegarLoop]: Abstraction has 225351 states and 335942 transitions. [2020-10-28 18:50:10,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 225351 states and 335942 transitions. [2020-10-28 18:50:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:50:10,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:10,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:10,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:50:10,606 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:10,607 INFO L82 PathProgramCache]: Analyzing trace with hash -798544718, now seen corresponding path program 1 times [2020-10-28 18:50:10,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:10,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365953226] [2020-10-28 18:50:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:50:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-28 18:50:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:11,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:50:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:50:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:50:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:11,722 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:11,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:11,771 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 18:50:11,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365953226] [2020-10-28 18:50:11,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:11,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:50:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475395482] [2020-10-28 18:50:11,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:50:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:11,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:50:11,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:50:11,773 INFO L87 Difference]: Start difference. First operand 225351 states and 335942 transitions. Second operand 11 states. [2020-10-28 18:50:12,191 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-28 18:50:16,863 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:50:17,354 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:50:17,740 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 18:50:18,131 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-28 18:50:18,522 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-28 18:50:19,000 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 18:50:19,386 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:50:21,995 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:50:22,515 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:50:22,905 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 18:50:23,320 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-28 18:50:23,831 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-28 18:50:24,191 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 18:50:24,929 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 226