/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_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:25:02,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:25:02,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:25:02,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:25:02,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:25:02,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:25:02,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:25:02,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:25:02,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:25:02,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:25:02,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:25:02,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:25:02,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:25:02,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:25:02,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:25:02,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:25:02,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:25:02,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:25:02,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:25:02,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:25:02,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:25:02,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:25:02,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:25:02,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:25:02,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:25:02,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:25:02,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:25:02,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:25:02,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:25:02,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:25:02,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:25:02,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:25:02,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:25:02,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:25:02,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:25:02,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:25:02,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:25:02,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:25:02,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:25:02,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:25:02,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:25:02,188 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 18:25:02,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:25:02,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:25:02,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:25:02,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:25:02,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:25:02,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:25:02,258 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:25:02,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:25:02,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:25:02,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:25:02,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:25:02,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:25:02,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:25:02,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:25:02,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:25:02,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:25:02,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:25:02,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:25:02,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:25:02,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:25:02,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:25:02,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:25:02,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:25:02,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:25:02,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:25:02,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:25:02,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:25:02,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:25:02,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:25:02,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:25:02,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:25:02,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:25:02,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:25:02,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:25:02,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:25:02,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:25:02,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61aa95960/bd42e2afb8944b6fa6e1d3223530d8b6/FLAG4edda02b2 [2020-10-28 18:25:03,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:25:03,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:25:03,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61aa95960/bd42e2afb8944b6fa6e1d3223530d8b6/FLAG4edda02b2 [2020-10-28 18:25:03,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61aa95960/bd42e2afb8944b6fa6e1d3223530d8b6 [2020-10-28 18:25:03,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:25:03,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:25:03,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:25:03,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:25:03,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:25:03,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:25:03" (1/1) ... [2020-10-28 18:25:03,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e14774d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:03, skipping insertion in model container [2020-10-28 18:25:03,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:25:03" (1/1) ... [2020-10-28 18:25:03,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:25:04,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:25:05,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:25:05,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:25:06,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:25:06,051 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:25:06,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06 WrapperNode [2020-10-28 18:25:06,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:25:06,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:25:06,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:25:06,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:25:06,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (1/1) ... [2020-10-28 18:25:06,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:25:06,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:25:06,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:25:06,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:25:06,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (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 18:25:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:25:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:25:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:25:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:25:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:25:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:25:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:25:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:25:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:25:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:25:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:25:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:25:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:25:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:25:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:25:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:25:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:25:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:25:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:25:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:25:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:25:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:25:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:25:10,059 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:25:10,061 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:25:10,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:25:10 BoogieIcfgContainer [2020-10-28 18:25:10,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:25:10,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:25:10,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:25:10,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:25:10,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:25:03" (1/3) ... [2020-10-28 18:25:10,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eae7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:25:10, skipping insertion in model container [2020-10-28 18:25:10,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:25:06" (2/3) ... [2020-10-28 18:25:10,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eae7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:25:10, skipping insertion in model container [2020-10-28 18:25:10,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:25:10" (3/3) ... [2020-10-28 18:25:10,082 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-28 18:25:10,095 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:25:10,103 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:25:10,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:25:10,185 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:25:10,185 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:25:10,185 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:25:10,185 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:25:10,185 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:25:10,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:25:10,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:25:10,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:25:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states. [2020-10-28 18:25:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 18:25:10,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:10,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:10,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:10,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1206753479, now seen corresponding path program 1 times [2020-10-28 18:25:10,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:10,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983312887] [2020-10-28 18:25:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:16,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:16,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-28 18:25:16,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:25:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 18:25:16,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:16,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:25:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:25:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-28 18:25:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:25:17,564 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:25:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:17,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 18:25:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:17,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:25:18,082 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 18:25:18,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983312887] [2020-10-28 18:25:18,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:18,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:18,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278417890] [2020-10-28 18:25:18,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:18,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:18,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:18,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:18,123 INFO L87 Difference]: Start difference. First operand 1443 states. Second operand 5 states. [2020-10-28 18:25:33,450 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:25:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:25:36,512 INFO L93 Difference]: Finished difference Result 4238 states and 7554 transitions. [2020-10-28 18:25:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:25:36,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-10-28 18:25:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:25:36,560 INFO L225 Difference]: With dead ends: 4238 [2020-10-28 18:25:36,561 INFO L226 Difference]: Without dead ends: 2836 [2020-10-28 18:25:36,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:25:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2020-10-28 18:25:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2833. [2020-10-28 18:25:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-10-28 18:25:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 4763 transitions. [2020-10-28 18:25:36,871 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 4763 transitions. Word has length 361 [2020-10-28 18:25:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:25:36,873 INFO L481 AbstractCegarLoop]: Abstraction has 2833 states and 4763 transitions. [2020-10-28 18:25:36,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:25:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 4763 transitions. [2020-10-28 18:25:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 18:25:36,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:25:36,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:36,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:25:36,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:25:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:25:36,888 INFO L82 PathProgramCache]: Analyzing trace with hash -786544652, now seen corresponding path program 1 times [2020-10-28 18:25:36,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:25:36,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131592351] [2020-10-28 18:25:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:25:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:38,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:42,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:42,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 18:25:42,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:25:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5219 [2020-10-28 18:25:42,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:42,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:25:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:25:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-28 18:25:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:25:43,442 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:25:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:25:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:25:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:25:43,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:25:43,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:25:43,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:25:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:25:43,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:25:43,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:25:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:25:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:25:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:25:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:25:44,036 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 18:25:44,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131592351] [2020-10-28 18:25:44,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:25:44,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:25:44,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813265698] [2020-10-28 18:25:44,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:25:44,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:25:44,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:25:44,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:25:44,059 INFO L87 Difference]: Start difference. First operand 2833 states and 4763 transitions. Second operand 5 states. [2020-10-28 18:25:59,014 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:26:01,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:01,871 INFO L93 Difference]: Finished difference Result 8309 states and 13956 transitions. [2020-10-28 18:26:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:26:01,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-28 18:26:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:01,906 INFO L225 Difference]: With dead ends: 8309 [2020-10-28 18:26:01,906 INFO L226 Difference]: Without dead ends: 5595 [2020-10-28 18:26:01,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:26:01,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2020-10-28 18:26:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5592. [2020-10-28 18:26:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2020-10-28 18:26:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 9370 transitions. [2020-10-28 18:26:02,352 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 9370 transitions. Word has length 363 [2020-10-28 18:26:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:26:02,353 INFO L481 AbstractCegarLoop]: Abstraction has 5592 states and 9370 transitions. [2020-10-28 18:26:02,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:26:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 9370 transitions. [2020-10-28 18:26:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-28 18:26:02,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:26:02,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:02,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:26:02,372 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:26:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:26:02,373 INFO L82 PathProgramCache]: Analyzing trace with hash -456618785, now seen corresponding path program 1 times [2020-10-28 18:26:02,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:26:02,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263011167] [2020-10-28 18:26:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:26:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 18:26:07,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:26:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-28 18:26:07,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:07,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:26:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:26:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-28 18:26:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:08,828 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:26:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:26:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:08,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:08,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:26:08,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:26:08,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 18:26:08,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:08,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:26:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:26:08,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:26:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:09,206 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 18:26:09,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263011167] [2020-10-28 18:26:09,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:26:09,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:26:09,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462173727] [2020-10-28 18:26:09,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:26:09,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:26:09,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:26:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:09,209 INFO L87 Difference]: Start difference. First operand 5592 states and 9370 transitions. Second operand 5 states. [2020-10-28 18:26:23,303 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:26:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:26,313 INFO L93 Difference]: Finished difference Result 16268 states and 27198 transitions. [2020-10-28 18:26:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:26:26,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 365 [2020-10-28 18:26:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:26,372 INFO L225 Difference]: With dead ends: 16268 [2020-10-28 18:26:26,373 INFO L226 Difference]: Without dead ends: 10997 [2020-10-28 18:26:26,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:26:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10997 states. [2020-10-28 18:26:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10997 to 10994. [2020-10-28 18:26:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10994 states. [2020-10-28 18:26:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10994 states to 10994 states and 18346 transitions. [2020-10-28 18:26:27,332 INFO L78 Accepts]: Start accepts. Automaton has 10994 states and 18346 transitions. Word has length 365 [2020-10-28 18:26:27,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:26:27,333 INFO L481 AbstractCegarLoop]: Abstraction has 10994 states and 18346 transitions. [2020-10-28 18:26:27,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:26:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 10994 states and 18346 transitions. [2020-10-28 18:26:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-28 18:26:27,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:26:27,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:27,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:26:27,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:26:27,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:26:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash 625472370, now seen corresponding path program 1 times [2020-10-28 18:26:27,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:26:27,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756297550] [2020-10-28 18:26:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:26:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:28,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:32,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:32,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-28 18:26:32,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:26:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-28 18:26:32,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:32,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:26:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:26:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-28 18:26:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:26:33,697 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:26:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:26:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:33,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:33,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:26:33,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:26:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:26:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:33,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:26:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:26:33,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:26:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:26:34,190 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 18:26:34,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756297550] [2020-10-28 18:26:34,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:26:34,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:26:34,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69332648] [2020-10-28 18:26:34,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:26:34,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:26:34,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:26:34,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:34,193 INFO L87 Difference]: Start difference. First operand 10994 states and 18346 transitions. Second operand 5 states. [2020-10-28 18:26:48,172 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:26:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:26:50,112 INFO L93 Difference]: Finished difference Result 32470 states and 54150 transitions. [2020-10-28 18:26:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:26:50,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 367 [2020-10-28 18:26:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:26:50,183 INFO L225 Difference]: With dead ends: 32470 [2020-10-28 18:26:50,183 INFO L226 Difference]: Without dead ends: 21763 [2020-10-28 18:26:50,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:26:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21763 states. [2020-10-28 18:26:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21763 to 21760. [2020-10-28 18:26:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21760 states. [2020-10-28 18:26:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21760 states to 21760 states and 36174 transitions. [2020-10-28 18:26:52,006 INFO L78 Accepts]: Start accepts. Automaton has 21760 states and 36174 transitions. Word has length 367 [2020-10-28 18:26:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:26:52,006 INFO L481 AbstractCegarLoop]: Abstraction has 21760 states and 36174 transitions. [2020-10-28 18:26:52,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:26:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 21760 states and 36174 transitions. [2020-10-28 18:26:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-28 18:26:52,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:26:52,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:52,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:26:52,064 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:26:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:26:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1846413860, now seen corresponding path program 1 times [2020-10-28 18:26:52,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:26:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245363344] [2020-10-28 18:26:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:26:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:57,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-28 18:26:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:58,340 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:26:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:26:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:26:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:26:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:26:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:26:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:26:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:26:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:26:58,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:26:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:26:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:26:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:26:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:26:58,622 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 18:26:58,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245363344] [2020-10-28 18:26:58,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:26:58,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:26:58,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971578962] [2020-10-28 18:26:58,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:26:58,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:26:58,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:26:58,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:26:58,625 INFO L87 Difference]: Start difference. First operand 21760 states and 36174 transitions. Second operand 5 states. [2020-10-28 18:27:15,080 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 18:27:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:27:17,380 INFO L93 Difference]: Finished difference Result 63374 states and 105122 transitions. [2020-10-28 18:27:17,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:27:17,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 369 [2020-10-28 18:27:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:27:17,532 INFO L225 Difference]: With dead ends: 63374 [2020-10-28 18:27:17,532 INFO L226 Difference]: Without dead ends: 42827 [2020-10-28 18:27:17,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:27:17,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42827 states. [2020-10-28 18:27:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42827 to 42824. [2020-10-28 18:27:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42824 states. [2020-10-28 18:27:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42824 states to 42824 states and 70870 transitions. [2020-10-28 18:27:21,349 INFO L78 Accepts]: Start accepts. Automaton has 42824 states and 70870 transitions. Word has length 369 [2020-10-28 18:27:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:27:21,349 INFO L481 AbstractCegarLoop]: Abstraction has 42824 states and 70870 transitions. [2020-10-28 18:27:21,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:27:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 42824 states and 70870 transitions. [2020-10-28 18:27:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-28 18:27:21,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:27:21,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:21,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:27:21,429 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:27:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:27:21,429 INFO L82 PathProgramCache]: Analyzing trace with hash 647601882, now seen corresponding path program 1 times [2020-10-28 18:27:21,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:27:21,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950483694] [2020-10-28 18:27:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:27:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:27:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:26,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:27:26,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-28 18:27:26,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:27:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:27:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:27:26,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:27:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:27:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:27:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 18:27:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:27:27,614 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:27:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:27:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:27:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:27:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:27:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:27:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:27:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:27:27,882 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 18:27:27,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950483694] [2020-10-28 18:27:27,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:27:27,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:27:27,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996346686] [2020-10-28 18:27:27,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:27:27,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:27:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:27:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:27:27,885 INFO L87 Difference]: Start difference. First operand 42824 states and 70870 transitions. Second operand 4 states. [2020-10-28 18:27:54,849 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:27:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:27:58,628 INFO L93 Difference]: Finished difference Result 124694 states and 205906 transitions. [2020-10-28 18:27:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:27:58,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 370 [2020-10-28 18:27:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:27:58,827 INFO L225 Difference]: With dead ends: 124694 [2020-10-28 18:27:58,827 INFO L226 Difference]: Without dead ends: 84771 [2020-10-28 18:27:59,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:27:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84771 states. [2020-10-28 18:28:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84771 to 84768. [2020-10-28 18:28:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84768 states. [2020-10-28 18:28:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84768 states to 84768 states and 139742 transitions. [2020-10-28 18:28:06,876 INFO L78 Accepts]: Start accepts. Automaton has 84768 states and 139742 transitions. Word has length 370 [2020-10-28 18:28:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:28:06,877 INFO L481 AbstractCegarLoop]: Abstraction has 84768 states and 139742 transitions. [2020-10-28 18:28:06,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:28:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 84768 states and 139742 transitions. [2020-10-28 18:28:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-28 18:28:07,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:28:07,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:07,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:28:07,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:28:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:28:07,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1779948610, now seen corresponding path program 1 times [2020-10-28 18:28:07,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:28:07,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989455967] [2020-10-28 18:28:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:28:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:28:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:07,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:08,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:12,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:28:12,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 18:28:12,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:28:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:28:12,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:28:12,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:28:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:28:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:28:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-28 18:28:12,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:28:13,423 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-10-28 18:28:13,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:28:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:28:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:28:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:28:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:28:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:28:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:28:13,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:28:13,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:28:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:28:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:28:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:28:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:28:13,719 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 18:28:13,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989455967] [2020-10-28 18:28:13,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:28:13,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:28:13,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263430180] [2020-10-28 18:28:13,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:28:13,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:28:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:28:13,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:28:13,721 INFO L87 Difference]: Start difference. First operand 84768 states and 139742 transitions. Second operand 5 states. [2020-10-28 18:28:42,481 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 415